Solved papers for JCECE Medical JCECE Medical Solved Paper-2005

done JCECE Medical Solved Paper-2005 Total Questions - 150

• question_answer1) If the velocity of light c, gravitational constant G and Planck's constant\[h,\]are chosen as fundamental units, the dimensional formula of length L in the new system is:
  A)
  \[[{{h}^{1}}{{c}^{1}}{{G}^{-1}}]\]
  done clear
  B)
  \[[{{h}^{1/2}}{{c}^{1/2}}{{G}^{-1/2}}]\]
  done clear
  C)
  \[[{{h}^{1}}{{c}^{-3}}{{G}^{-1}}]\]
  done clear
  D)
  \[[{{h}^{1/2}}{{c}^{-3/2}}{{G}^{1/2}}]\]
  done clear
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• question_answer2) The radius of sphere is measured to be \[(2.1\,\pm \,0.5)\,cm.\]Calculate its surface area with error limits:
  A)
  \[(55.4\,\pm \,26.4)\,c{{m}^{2}}\]
  done clear
  B)
   \[(55.4\,\pm \,0.02)\,c{{m}^{2}}\]
  done clear
  C)
   \[(55.4\,\pm \,2.64)\,c{{m}^{2}}\]
  done clear
  D)
   \[(55.4\,\pm \,0.26)\,c{{m}^{2}}\]
  done clear
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• question_answer3) A block of mass 2 kg rests on a plane inclined at an angle of\[{{30}^{o}}\]with the horizontal. The coefficient of friction between the block and surface is 0.7. The frictional force acting on the block is:
  A)
   11.9 N         
  done clear
  B)
   25 N
  done clear
  C)
   50 N          
  done clear
  D)
   22.9 N
  done clear
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• question_answer4) A particle moves along Y-axis in such a way that its \[y-\]coordinate varies with time \[t\]according to the relation\[y=3+5t+7{{t}^{2}}.\]The initial velocity and acceleration of the particle are respectively:
  A)
  \[14m{{s}^{-1}},-5\,m{{s}^{-2}}\]
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  B)
   \[19\,m{{s}^{-1}},-9\,m{{s}^{-2}}\]
  done clear
  C)
   \[-14\,m{{s}^{-1}},-5\,m{{s}^{-2}}\]
  done clear
  D)
   \[5m{{s}^{-1}},14m{{s}^{-2}}\]
  done clear
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• question_answer5) An object travels north with a velocity of \[10\,m{{s}^{-1}}\] and then speeds up to a velocity of \[25\,m{{s}^{-1}}\] in 5 s. The acceleration of the object in these 5 s is:
  A)
  \[12\,m{{s}^{-2}}\] in north direction
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  B)
  \[3\,m{{s}^{-2}}\]in north direction
  done clear
  C)
   15ms 2 in north direction
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  D)
   \[3\,m{{s}^{-2}}\]in south direction           
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• question_answer6) An automobile travelling at 50 km/h, can be stopped at a distance of 40 m by applying brakes. If the same automobile is travelling at 90 km/h, all other conditions remaining same and assuming no skidding, the minimum stopping distance in metres is:
  A)
   72             
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  B)
   92.5
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  C)
   102.6          
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  D)
   129.6
  done clear
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• question_answer7) A rifle shoots a bullet with a muzzle velocity of\[500\,m{{s}^{-1}}\] at a small target 50 m away. To hit the target the rifle must be aimed: (Take\[g=10\,m{{s}^{-2}}\])
  A)
   exactly at the target
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  B)
   10 cm below the target
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  C)
   10 cm above the target
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  D)
   5 cm above the target
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• question_answer8) The centripetal acceleration of particle of mass \[m\]moving with a velocity v in a circular orbit of radius r is:
  A)
   \[{{v}^{2}}/s\]along the radius, towards the centre
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  B)
   \[{{v}^{2}}/r\]along the radius, away from the centre
  done clear
  C)
   \[m{{v}^{2}}/r\]along the radius, away the centre
  done clear
  D)
   \[m{{v}^{2}}/r\]along the radius, towards the centre
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• question_answer9) An\[\alpha -\]particle of mass m suffers one dimensional elastic collision with a nucleus of unknown mass. After the collision the \[\alpha -\]particle is scattered directly backwards losing 75% of its kinetic energy. The mass of the unknown nucleus is:
  A)
   m              
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  B)
   2m
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  C)
   3m             
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  D)
  \[\frac{3}{2}m\]
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• question_answer10) If a transformer of an audio amplifier has output impedance 8000 0 and the speaker has input impedance of 80, the primary and secondary turns of this transformer connected
  A)
   1000 : 1       
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  B)
   100 : 1
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  C)
   1 : 32        
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  D)
   32 : 1
  done clear
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• question_answer11) A stationary body of mass m explodes into the  three parts having masses in the ratio 1:3:3. The two fractions with equal masses move at right angles to each other with a velocity of \[1.5\,m{{s}^{-1}}.\] The velocity of the third part is:
  A)
  \[4.5\sqrt{2}\,m{{s}^{-1}}\]
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  B)
   \[5\,m{{s}^{-1}}\]
  done clear
  C)
   \[5\sqrt{32}\,m{{s}^{-1}}\]
  done clear
  D)
   \[1.5\,m{{s}^{-1}}\]
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• question_answer12) In the electromagnetic spectrum, the visible spectrum lies between:
  A)
   radio waves and microwaves
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  B)
   infrared and ultraviolet rays
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  C)
   microwaves and infrared spectrum
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  D)
   X-ray and gamma ray spectrum
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• question_answer13) An object of mass \[m\]falls on to a spring of constant k from height\[h.\]The spring undergoes compression by a length\[x.\]The maximum compression \[x\] is given by the equation:
  A)
  \[m\,g\,h=\frac{1}{2}k{{x}^{2}}\]
  done clear
  B)
   \[m\,g(h+x)=\frac{1}{2}k{{x}^{2}}\]
  done clear
  C)
   \[m\,g(h+x)=-kx\]
  done clear
  D)
   \[m\,g\,h=-kx\]
  done clear
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• question_answer14) A 5000 kg rocket is set for vertical firing. The exhaust speed is \[800\text{ }m/s.\] To give an initial  upward acceleration of \[20\,m/{{s}^{2}},\] the amount of gas ejected per second to supply the needed thrust will be:
  A)
   137.5 kg/s     
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  B)
   185.5 kg/s
  done clear
  C)
   127.5 kg/s     
  done clear
  D)
   187.5 kg/s
  done clear
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• question_answer15) An elastic ball is dropped from a height h and it rebounds many times from the floor. If the coefficient of restitution is e, the time interval between the second and the third impact, is:
  A)
  \[\frac{ev}{g}\]
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  B)
   \[\frac{{{e}^{2}}v}{g}\]
  done clear
  C)
   \[{{e}^{2}}\sqrt{\left( \frac{8h}{g} \right)}\]
  done clear
  D)
   \[{{e}^{2}}\sqrt{\left( \frac{h}{g} \right)}\]
  done clear
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• question_answer16) An object of mass m is attached to light string which passess through a hollow tube. The object is set into rotation in a horizontal circle of radius \[{{r}_{1}}.\]If the string is pulled shortening the radius to \[{{r}_{2}},\]the ratio of new kinetic energy to the original kinetic energy is:
  A)
  \[{{\left( \frac{{{r}_{2}}}{{{r}_{1}}} \right)}^{2}}\]
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  B)
   \[{{\left( \frac{{{r}_{1}}}{{{r}_{2}}} \right)}^{2}}\]
  done clear
  C)
   \[\frac{{{r}_{1}}}{{{r}_{2}}}\]
  done clear
  D)
   \[\frac{{{r}_{2}}}{{{r}_{1}}}\]
  done clear
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• question_answer17) Total angular momentum of a rotating body remains constant,, if the net torque acting on the body is:
  A)
   zero          
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  B)
   maximum
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  C)
   minimum     
  done clear
  D)
   unity
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• question_answer18) A car is racing on a circular track of 180 m radius with a speed of \[32\,m{{s}^{-1}}.\]What should be the banking angle of the road to avoid chances of skidding of the vehicle at this speed without taking into consideration the friction between the tyre and the road?
  A)
   \[{{45}^{o}}\]
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  B)
  \[{{60}^{o}}\]
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  C)
  \[{{30}^{o}}\]
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  D)
   \[{{15}^{o}}\]
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• question_answer19) When a ceiling fan is switched on it makes 10 rotations in the first 3 s. The number of rotations it makes in the next 3s, assuming Uniform angular acceleration is:
  A)
   40            
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  B)
   30
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  C)
   20            
  done clear
  D)
   10
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• question_answer20) A body is projected vertically upwards from the surface of a planet of radius r with a velocity equal to 1/3rd the escape velocity for the planet. The maximum height attained by the body is:
  A)
   R/2           
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  B)
   R/3
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  C)
   R/5          
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  D)
   R/9
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• question_answer21) A man weighs 80 kg on earth's surface. The height above ground where he will weigh 40 kg, is : (Radius of earth is 6400 km)
  A)
   0.31 times r   
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  B)
   0.41 times r
  done clear
  C)
   0.51 times r   
  done clear
  D)
   0.61 times r
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• question_answer22) An adulterated sample of milk has a density of \[1032\,kg-{{m}^{3}},\] while pure milk has a density of \[1080\,kg-{{m}^{-3}}.\]The volume of pure milk in a sample of 10 L of adulterated milk is:
  A)
   0.5 L           
  done clear
  B)
   1.0 L
  done clear
  C)
   2.0 L           
  done clear
  D)
   4.0 L
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• question_answer23) Typical silt (hard mud) particle of radius \[20\,\mu m\]is on the top of lake water, its density is \[2000\,kg/{{m}^{3}}\]and the viscosity of lake water is\[1.0\,m\,Pa,\], density is\[1000\,kg/{{m}^{3}}.\] If the lake is still (has no internal fluid motion), the terminal speed with which the particle hits the bottom of the lake in mm/s is:
  A)
   0.67           
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  B)
   0.77
  done clear
  C)
   0.87           
  done clear
  D)
   0.97
  done clear
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• question_answer24) A solid sphere and a hollow sphere, both of the  same size and same mass roll down an inclined plane. Then:
  A)
   solid sphere reaches the ground first
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  B)
   hollow sphere reaches the ground first
  done clear
  C)
   both spheres reaches the ground at the same time
  done clear
  D)
   the time at which the spheres reach the ground cannot be specified by the given data
  done clear
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• question_answer25) If P is the pressure, V the volume, R the gas constant, \[k\]the Boltzmann constant and T the absolute temperature, then the number of molecules in the given mass of the gas is given by:
  A)
  \[\frac{PV}{RT}\]
  done clear
  B)
  \[\frac{PV}{kT}\]
  done clear
  C)
   \[\frac{PR}{T}\]
  done clear
  D)
  \[PV\]
  done clear
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• question_answer26) An air bubble is released from the bottom of a  pond and is found to expand to thrice its original volume as it reached the surface. If the atmospheric pressure is \[\text{100}\,\text{kpa,}\] the absolute pressure at the bottom of lake in\[\text{kpa}\]  is ... (assume no temperature variation):
  A)
   33.3           
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  B)
   50.0
  done clear
  C)
   100.0         
  done clear
  D)
   300.0
  done clear
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• question_answer27) Maxwell  in  his  famous  equation of electromagnetism introduced the concept:
  A)
   AC current
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  B)
   DC current
  done clear
  C)
   displacement current
  done clear
  D)
   impedance
  done clear
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• question_answer28) 1 g of steam at \[\text{100}{{\,}^{\text{o}}}\text{C}\]and equal mass of ice  at \[\text{0}{{\,}^{\text{o}}}\text{C}\]are mixed. The temperature of the mixture in steady state will be (latent heat of steam \[\text{= 540}\,\text{cal/g,}\] latent heat of \[\text{ice}\,\text{=}\,\text{80}\,\text{cal/g}\]) :
  A)
  \[50{{\,}^{o}}C\]         
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  B)
  \[100{{\,}^{o}}C\]
  done clear
  C)
   \[67{{\,}^{o}}C\]         
  done clear
  D)
  \[33{{\,}^{o}}C\]
  done clear
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• question_answer29) The work done by a gas is maximum when it expands:
  A)
   isothermally   
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  B)
   adiabatically
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  C)
   isochorically   
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  D)
   isobarically
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• question_answer30) A tuning fork of frequency 580 Hz is employed to produce transverse waves on, a long rope. The distance between the nearest crests is found to be 20 cm. The velocity of the wave is:
  A)
  \[58\,m{{s}^{-1}}\]
  done clear
  B)
   \[580\,m{{s}^{-1}}\]
  done clear
  C)
   \[20\,m{{s}^{-1}}\]
  done clear
  D)
   \[116\,m{{s}^{-1}}\]
  done clear
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• question_answer31) A heavy brass sphere is hung from a weightless inelastic spring and as a simple pendulum its time period of oscillation is T. When the sphere is immersed in a non-viscous liquid of density 1/10 that of brass, it will act as a simple pendulum of period :
  A)
  \[T\]
  done clear
  B)
   \[\frac{10}{9}T\]
  done clear
  C)
   \[\sqrt{\left( \frac{9}{10} \right)}T\]
  done clear
  D)
   \[\sqrt{\left( \frac{10}{9} \right)}T\]
  done clear
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• question_answer32) The distance travelled by a sound wave when a tuning fork completes 25 vibrations is 16.5 m. If the frequency of the tuning fork is 500 Hz, find the velocity of sound.
  A)
  \[350\,m{{s}^{-1}}\]
  done clear
  B)
   \[330\,m{{s}^{-1}}\]
  done clear
  C)
   \[300\,m{{s}^{-1}}\]
  done clear
  D)
   \[450\,m{{s}^{-1}}\]
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• question_answer33) Two instruments having stretched strings are being played in unison. When the tension of one of the instruments is increased by 1%, 3 beats are produced in 2s. The initial frequency of vibration of each wire is:
  A)
   300 Hz       
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  B)
   500 Hz
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  C)
   1000 Hz      
  done clear
  D)
   400 Hz
  done clear
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• question_answer34) Three point charges 1C, 2C and 3 C are placed at the corners of an equilateral triangle of side 1m. The work done in bringing these charges to the vertices of a smaller similar triangle of side 0.5 m is:
  A)
  \[2.7\times {{10}^{10}}\,J\]
  done clear
  B)
   \[9.9\times {{10}^{10}}\,J\]
  done clear
  C)
   \[10.8\times {{10}^{10}}\,J\]
  done clear
  D)
  \[5.4\times {{10}^{10}}\,J\]
  done clear
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• question_answer35) The capacitors A and B have identical geometry. A material with a dielectric constant 3 is present between the plates of B. The potential difference across A and B are respectively:
  A)
  \[2.5\,V,7.5\,V\]
  done clear
  B)
   \[2\,V,8V\]
  done clear
  C)
   \[8\,V,2V\]
  done clear
  D)
   \[7.5\,V,\,2.5\,V\]
  done clear
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• question_answer36) An electric bulb is marked 100 W, 230 V. If the supply voltage drops to 115 V, what is the total energy produced by the bulb in 10 min?
  A)
   30 kJ         
  done clear
  B)
   2D kJ
  done clear
  C)
   15 kJ         
  done clear
  D)
   10 kJ
  done clear
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• question_answer37) A circular coil carrying a current has a radius R. The ratio of magnetic induction at the centre of the coil and at a distance equal to \[\sqrt{3}R\]from the centre of the coil on the axis is:
  A)
   1 : 1        
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  B)
   1 : 2
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  C)
   2 : 1        
  done clear
  D)
   8 : 1
  done clear
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• question_answer38) The .examples of 'diamagnetic, paramagnetic and ferromagnetic materials are respectively:
  A)
   copper, aluininium, iron
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  B)
   aluminium, copper, iron
  done clear
  C)
   copper, iron, aluminium
  done clear
  D)
   aluminium, iron, copper
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• question_answer39) In the Wheatstone's bridge shown below, in order to balance the bridge we must have:
  A)
  \[{{R}_{1}}=3\Omega ,{{R}_{2}}=3\Omega \]
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  B)
   \[{{R}_{1}}=6\Omega ,{{R}_{2}}=1.5\Omega \]
  done clear
  C)
  \[{{R}_{1}}=1.5\Omega ,{{R}_{2}}=\text{any}\,\text{finite}\,\text{value}\]
  done clear
  D)
  \[{{R}_{1}}=3\Omega ,{{R}_{2}}=\text{any}\,\text{finite}\,\text{value}\]
  done clear
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• question_answer40) Four \[10\,\,\mu F\]capacitors are connected to a 500 V supply as shown in the figure. The equivalent capacitance of the network is:
  A)
   \[40\,\mu F\]
  done clear
  B)
  \[20\,\mu F\]
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  C)
   \[13.3\,\mu F\]
  done clear
  D)
   \[10\,\mu F\]
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• question_answer41) A resistor is constructed as hollow cylinder of dimensions \[{{r}_{a}}=0.5\,cm\]and \[{{r}_{b}}=1.0\,cm\]and \[\rho =3.5\times {{10}^{-5}}\Omega \,m.\]The resistance of the configuration for the length of 5 cm cylinder is
  A)
   7.43         
  done clear
  B)
     10.56          
  done clear
  C)
   14.38         
  done clear
  D)
   16.48
  done clear
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• question_answer42) The resistors are connected as shown in the figure below. Find the equivalent resistance between the points A and B.              
  A)
  \[205\Omega \]
  done clear
  B)
  \[10\Omega \]
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  C)
  \[3.5\,\Omega \]
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  D)
  \[5\,\Omega \]
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• question_answer43) The figure below shows a 2.0 V potentiometer used for the determination of internal resistance of a 2.5 V cell. The balance point of the cell in the open circuit is 75 cm. When a resistor of \[10\Omega \]is used in the external circuit of the cell, the balance point shifts to 65 cm length of potentiometer wire. The internal resistance of the cell is:
  A)
  \[2.5\Omega \]          
  done clear
  B)
  \[2.0\,\Omega \]
  done clear
  C)
   \[1.54\,\Omega \]
  done clear
  D)
  \[1.0\,\Omega \]
  done clear
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• question_answer44) An electric heater boils 1 kg of water in a time \[{{t}_{1}}.\]Another heater boils the same amount of water in a time \[{{t}_{2}}.\]When the two heaters are connected in parallel, the time required by them together to boil the same amount of water is:
  A)
  \[{{t}_{1}}+{{t}_{2}}\]
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  B)
  \[{{t}_{1}}{{t}_{2}}\]
  done clear
  C)
   \[\frac{{{t}_{1}}+{{t}_{2}}}{2}\]
  done clear
  D)
   \[\frac{{{t}_{1}}{{t}_{2}}}{{{t}_{1}}+{{t}_{2}}}\]
  done clear
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• question_answer45) Two thin metallic strips, carrying current in the direction   shown,   cross   each   other perpendicularly without touching but being close to each other, as shown in the figure. The regions which contain some points of zero magnetic induction are:
  A)
   I and II        
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  B)
   I and III
  done clear
  C)
   I and IV        
  done clear
  D)
   II and III
  done clear
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• question_answer46) The force on a conductor of length I placed in a magnetic field of magnitude B and carrying a current\[i\]is given by (\[\theta \]is the angle, the conductor makes with the direction of B):
  A)
  \[F=i\,lB\sin \theta \]
  done clear
  B)
   \[F={{i}^{2}}l{{B}^{2}}\sin \theta \]
  done clear
  C)
   \[F=i\,l\,B\,\cos \theta \]
  done clear
  D)
   \[F=\frac{{{i}^{2}}l}{B}\sin \theta \]
  done clear
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• question_answer47) A needle made of bismuth is suspended freely in a magnetic field. The angle which the needle makes with the magnetic field is:
  A)
  \[{{0}^{o}}\]              
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  B)
  \[{{45}^{o}}\]
  done clear
  C)
   \[{{90}^{o}}\]            
  done clear
  D)
  \[{{180}^{o}}\]
  done clear
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• question_answer48) The resonant frequency of an LCR. Circuit occurs at a frequency equal to:
  A)
  \[\frac{1}{LC}\]
  done clear
  B)
   \[\frac{1}{\sqrt{LC}}\]
  done clear
  C)
   \[\frac{1}{LCR}\]
  done clear
  D)
   \[\frac{1}{CR}\]
  done clear
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• question_answer49) An  alternating .current  is ' given  by \[i={{i}_{1}}\cos \,\omega t+{{i}_{2}}\sin \omega t.\]The rms current is given by:
  A)
   \[\frac{{{i}_{1}}+{{i}_{2}}}{\sqrt{2}}\]
  done clear
  B)
   \[\frac{{{i}_{1}}-{{i}_{2}}}{\sqrt{2}}\]
  done clear
  C)
   \[\sqrt{\left( \frac{i_{1}^{2}+i_{2}^{2}}{2} \right)}\]
  done clear
  D)
   \[\sqrt{\left( \frac{i_{1}^{2}-i_{2}^{2}}{2} \right)}\]
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• question_answer50) The coefficient of mutual inductance between the primary and secondary of the coil is 5 H. A current of 10 A is cut-off in 0.5 s. The induced emf is:
  A)
   1 V          
  done clear
  B)
   10 V
  done clear
  C)
   5 V           
  done clear
  D)
   100 V
  done clear
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• question_answer51) The standard adopted for the determination of atomic weight of elements is based on:
  A)
  \[{{H}^{1}}\]
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  B)
  \[{{C}^{12}}\]
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  C)
  \[{{O}^{16}}\]
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  D)
  \[{{S}^{32}}\]
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• question_answer52) Law of multiple proportions is illustrated by one of the following pairs:
  A)
  \[{{H}_{2}}S\]and \[S{{O}_{2}}\]
  done clear
  B)
  \[N{{H}_{3}}\]and \[N{{O}_{2}}\]
  done clear
  C)
   \[N{{a}_{2}}S\]and \[N{{a}_{2}}O\]
  done clear
  D)
  \[{{N}_{2}}O\]and \[NO\]
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• question_answer53) Paramagnetism of oxygen is explained on the basis of its electronic configuration of:
  A)
  \[(2\pi _{\pi }^{*}){{(2{{\pi }_{y}})}^{1}}\]
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  B)
   \[{{({{\pi }^{*}}2{{p}_{y}})}^{1}}({{\pi }^{*}}2p_{z}^{1})\]
  done clear
  C)
   \[{{(2\sigma _{s}^{*})}^{1}}{{(2{{\pi }_{y}})}^{1}}\]
  done clear
  D)
   \[{{(2\sigma _{s}^{*})}^{1}}{{(2{{\pi }_{y}})}^{1}}\]
  done clear
  View Answer play_arrow

• question_answer54) The van der Waals' equation for a real gas is given by the formula \[\left( P+\frac{{{n}^{2}}a}{{{V}^{2}}} \right)(V-nb)=nRT\] where P, V, T and \[n\]are the pressure, volume, temperature and the number of moles of the gas. Which one is the correct interpretation for the parameter a?
  A)
   The parameter a accounts for the finite size of the molecule, riot included temperature in the ideal gas law
  done clear
  B)
   The parameter a accounts for the shape of gas phase molecules
  done clear
  C)
   The   parameter a accounts for intermolecular interaction's present in the molecule
  done clear
  D)
   The parameter a has no physical significance   and van der Waals? introduced it as a numerical correction factor only
  done clear
  View Answer play_arrow

• question_answer55) Avogadro's hypothesis states that:
  A)
   the ideal gas consists of a large number of small particles called molecules
  done clear
  B)
   under the same conditions of temperature and pressure equal volumes of gases contain the same number of molecules
  done clear
  C)
   volume of a definite quantity of gas at constant pressure is directly proportional to absolute temperature
  done clear
  D)
   a given mass of gas at constant pressure is directly proportional to absolute temperature
  done clear
  View Answer play_arrow

• question_answer56) The observation that the ground state of nitrogen atom has 3 unpaired electrons in its electronic configuration and not otherwise is associated with:
  A)
   Pauli?s exclusion principle
  done clear
  B)
   Hund's rule of maximum multiplicity
  done clear
  C)
   Heisenberg?s uncertainty principle
  done clear
  D)
   Ritz combination principle
  done clear
  View Answer play_arrow

• question_answer57)  Which of the following overlaps leads to bonding?
  A)
   
  done clear
  B)
   
  done clear
  C)
   
  done clear
  D)
   
  done clear
  View Answer play_arrow

• question_answer58) In the periodic table metallic character of elements shows one of the following trend:
  A)
   decreases down the group and increases across the period
  done clear
  B)
   increases down the group and decreases across the period
  done clear
  C)
   increases across the period and also down the group
  done clear
  D)
   decreases across the period and also down the group
  done clear
  View Answer play_arrow

• question_answer59) Which of the following statements is correct?
  A)
   All carbon to carbon bonds contain a sigma bond and one or more pi bonds
  done clear
  B)
   All carbon to hydrogen bonds are pi bonds
  done clear
  C)
   All oxygen to hydrogen bonds are hydrogen bonds
  done clear
  D)
   All carbon to hydrogen bonds are sigma bonds
  done clear
  View Answer play_arrow

• question_answer60) An example of a polar covalent compound is:
  A)
   \[KCl\]
  done clear
  B)
  \[NaCl\]
  done clear
  C)
   \[CC{{l}_{4}}\]
  done clear
  D)
  \[HCl\]
  done clear
  View Answer play_arrow

• question_answer61) If \[\text{117 g NaCl}\]is dissolved in 1000 g of water the concentration of the solution is said to be:
  A)
  2 molar       
  done clear
  B)
  2 molal
  done clear
  C)
   1 normal     
  done clear
  D)
   1 molal
  done clear
  E)
  done clear
  View Answer play_arrow

• question_answer62) A solution of 4.5 g of a pure non-electrolyte in 100 g of water was found to freeze at \[\text{0}\text{.465}{{\,}^{\text{o}}}\text{C}\text{.}\] The molecular weight of the solute is closest to \[\text{(}{{\text{k}}_{f}}\text{=1}\text{.86):}\]
  A)
   135.0         
  done clear
  B)
   172.0
  done clear
  C)
   90.0           
  done clear
  D)
   180.0
  done clear
  View Answer play_arrow

• question_answer63) The enthalpy of vaporization of substance is \[\text{840}\,\text{J}-\text{mo}{{\text{l}}^{-1}}\]and its boiling point is\[-\text{173}{{\,}^{\text{o}}}\text{C}\text{.}\] Its entropy of vaporization is:
  A)
  \[42\,J\,mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  B)
   \[21\,J\,mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  C)
   \[84\,J\,mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  D)
   \[8.4\,J\,mo{{l}^{-1}}{{K}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer64) Given   the   following   thermochemical equations : \[Zn+\frac{1}{2}{{O}_{2}}\,\xrightarrow{{}}ZnO+84,000\,\text{cal}\,\] \[Hg+\frac{1}{2}{{O}_{2}}\,\xrightarrow{{}}HgO+21,700\,\text{cal}\,\] Accordingly the heat of reaction for the  following reaction \[Zn+HgO\xrightarrow{{}}Hg+heat\]  is:    
  A)
   105,700 cal    
  done clear
  B)
   61,000 cal       
  done clear
  C)
   105,000 cal    
  done clear
  D)
   62,300 cal
  done clear
  View Answer play_arrow

• question_answer65) A saturated solution of\[\text{Ca}{{\text{F}}_{\text{2}}}\] is \[\text{2}\times {{10}^{-4}}\,\text{mol/L}\] Its solubility product constant is:
  A)
  \[2.6\times {{10}^{-9}}\]
  done clear
  B)
   \[4\times {{10}^{-8}}\]
  done clear
  C)
   \[8\times {{10}^{-12}}\]
  done clear
  D)
   \[3.2\times {{10}^{-11}}\]
  done clear
  View Answer play_arrow

• question_answer66) For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)\]the equilibrium constants expressed in terms of concentrations \[{{\text{K}}_{\text{c}}}\]and in terms of partial pressures \[{{\text{K}}_{p}},\]are related as:
  A)
  \[{{K}_{p}}={{K}_{c}}{{(RT)}^{2}}\]
  done clear
  B)
   \[{{K}_{p}}={{K}_{c}}{{(RT)}^{-2}}\]
  done clear
  C)
   \[{{K}_{p}}={{K}_{c}}\]
  done clear
  D)
   \[{{K}_{c}}={{K}_{p}}(RT)\]
  done clear
  View Answer play_arrow

• question_answer67) Which of the following 1:1 mixture will act as buffer solution?                           
  A)
  \[HCl\]and \[NaOH\]
  done clear
  B)
  \[KOH\]and \[C{{H}_{3}}COOH\]
  done clear
  C)
   \[C{{H}_{3}}COOH\]and \[NaCl\]
  done clear
  D)
   \[C{{H}_{3}}COOH\]and \[C{{H}_{3}}COONa\]
  done clear
  View Answer play_arrow

• question_answer68) What is potential of platinum wire dipped into a solution of 0.1 M in \[S{{n}^{2+}}\]and 0.01 M in \[S{{n}^{4+}}?\]
  A)
  \[{{E}_{0}}\]
  done clear
  B)
   \[{{E}_{0}}+0.059\]
  done clear
  C)
   \[{{E}_{0}}+\frac{0.059}{2}\]
  done clear
  D)
   \[{{E}_{0}}=\frac{0.059}{2}\]
  done clear
  View Answer play_arrow

• question_answer69) In one of the following reactions \[\text{HN}{{\text{O}}_{\text{3}}}\]does not behave as an oxidizing agent. Identify it:
  A)
  \[{{I}_{2}}+10HN{{O}_{3}}\xrightarrow{{}}2HI{{O}_{3}}+10N{{O}_{2}}+4{{H}_{2}}O\]
  done clear
  B)
   \[3Cu+8HN{{O}_{3}}\xrightarrow{{}}3Cu{{(N{{O}_{3}})}_{2}}\] \[+\,2NO+4{{H}_{2}}O\]
  done clear
  C)
   \[4Zn+10HN{{O}_{3}}\xrightarrow{{}}4Zn{{(N{{O}_{3}})}_{2}}\] \[+\,N{{H}_{4}}N{{O}_{3}}+3{{H}_{2}}O\]
  done clear
  D)
   \[2HN{{O}_{3}}+{{P}_{2}}{{O}_{5}}\xrightarrow{{}}2HP{{O}_{3}}+{{N}_{2}}{{O}_{5}}\]
  done clear
  View Answer play_arrow

• question_answer70) Which of the following statement is not correct?                          
  A)
   In zero order reaction the rate of the reaction remains constant throughout
  done clear
  B)
   A second order reaction would become a pseudo first order reaction when one of the reactants is taken in large excess
  done clear
  C)
   The value of first order rate constant depends on the units of the concentration terms used
  done clear
  D)
   In a first order reaction the plot of \[\,\log \,(a-x)\,vs\]time gives a straight line
  done clear
  View Answer play_arrow

• question_answer71) Radioactive decay series of uranium is denoted as:           
  A)
  \[4n+1\]
  done clear
  B)
   \[4n+2\]
  done clear
  C)
   \[4n\]
  done clear
  D)
   \[4n+3\]
  done clear
  View Answer play_arrow

• question_answer72) The number of isomeric hexanes is:
  A)
   5
  done clear
  B)
   2
  done clear
  C)
   3
  done clear
  D)
   4
  done clear
  View Answer play_arrow

• question_answer73) The coagulating power of an electrolyte for arsenious sulphide decreases in the order:
  A)
  \[N{{a}^{+}}>A{{l}^{3+}}>B{{a}^{2+}}\]
  done clear
  B)
   \[PO_{4}^{3-}>SO_{4}^{2-}>C{{l}^{-}}\]
  done clear
  C)
   \[Cl>SO_{4}^{2-}>PO_{4}^{3-}\]
  done clear
  D)
   \[A{{l}^{3+}}>B{{a}^{2+}}>N{{a}^{+}}\]
  done clear
  View Answer play_arrow

• question_answer74) The two optical isomers given below, namely, :
  A)
   enantiomers
  done clear
  B)
   geometrical isomers
  done clear
  C)
   diastereomers          
  done clear
  D)
   structural isomers
  done clear
  View Answer play_arrow

• question_answer75) Which of the following statement is wrong?
  A)
   Using Lassaigne's test nitrogen and sulphur present in organic compound can be tested
  done clear
  B)
   Using Beilstein's test the presence of halogen in a compound can be tested
  done clear
  C)
   In Lassaigne's filtrate the'nitrogen present in a organic compound is converted into NaCN                 
  done clear
  D)
   In the estimation of carbon, an organic compound is heated with' CaO in a combustion tube
  done clear
  View Answer play_arrow

• question_answer76) \[Cis-trans\]isomers generally:  
  A)
   contain an asymmetric carbon atom
  done clear
  B)
   rotate the plane of polarized light
  done clear
  C)
   are enantiomorphs
  done clear
  D)
   contain double bonded carbon atoms
  done clear
  View Answer play_arrow

• question_answer77) Wurtz's reaction involves'the reduction of alkyl halide with:
  A)
  \[~Zn/HCl\]
  done clear
  B)
  \[HI\]
  done clear
  C)
   \[Zn/Cu\]couple  
  done clear
  D)
   Na in ether
  done clear
  View Answer play_arrow

• question_answer78) The reaction \[{{C}_{12}}{{H}_{26}}\xrightarrow{{}}{{C}_{6}}{{H}_{12}}+{{C}_{6}}{{H}_{14}}\] represent:
  A)
   substitution    
  done clear
  B)
   synthesis
  done clear
  C)
   cracking    
  done clear
  D)
   polymerization
  done clear
  View Answer play_arrow

• question_answer79) The compound that does not answer iodoform test is:       
  A)
   ethanol       
  done clear
  B)
   ethanal
  done clear
  C)
   methanol   
  done clear
  D)
   propanone
  done clear
  View Answer play_arrow

• question_answer80) Which one of the .following compound reacts with chlorobenzene to produce DDT?
  A)
   Acetaldehyde
  done clear
  B)
   Nitrobenzene
  done clear
  C)
   \[m-\]chloroacetaidehyde
  done clear
  D)
   Trichloroacetaldehyde
  done clear
  View Answer play_arrow

• question_answer81) Conversion of benzaldehyde to 3-phenyl-prop-2-en-1-oic acid is:
  A)
   Perkin condensation
  done clear
  B)
   Claisen condensation
  done clear
  C)
   Oxidative addition
  done clear
  D)
   Aldol condensation
  done clear
  View Answer play_arrow

• question_answer82) Which of the following compounds forms an addition compound with \[\text{C}{{\text{H}}_{\text{3}}}\text{MgBr,}\]which on hydrolysis produce a secondary alcohol?
  A)
  \[HCHO\]
  done clear
  B)
   \[C{{H}_{3}}CHO\]
  done clear
  C)
  \[C{{H}_{3}}OC{{H}_{3}}\]
  done clear
  D)
   \[C{{H}_{3}}COC{{H}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer83) Which of the following pairs are correctly matched?           

  1. Haber process	Manufacture of ammonia
  2. Leblanc process	Manufacture of sulphuric acid
  3. Birkeland-Eyde process	Manufacture of nitric acid
  4. Solvay process	Manufacture of sodium carbonate

  Select the correct answer using the codes given below:
  A)
   2, 3 and 4     
  done clear
  B)
   1, 2, 3 and 4
  done clear
  C)
   1, 2 and       
  done clear
  D)
   1, 3 and 4
  done clear
  View Answer play_arrow

• question_answer84) Which of the following compounds on treatment first with \[NaN{{O}_{2}}/HCl\]and then coupled     with     phenol     produces \[p-\]hydroxyazobenzene?
  A)
   Nitrobenzene  
  done clear
  B)
   Azobenzene
  done clear
  C)
   Phenol        
  done clear
  D)
   Aniline
  done clear
  View Answer play_arrow

• question_answer85) Initial setting of cement is mainly due to:
  A)
   hydration and gel formation
  done clear
  B)
   dehydration and gel formation
  done clear
  C)
   hydration and hydrolysis
  done clear
  D)
   dehydration and dehydrolysis
  done clear
  View Answer play_arrow

• question_answer86) A certain metal will liberate hydrogen from dilute acids. It will react with water to form hydrogen only when the metal is heated and the water is in the form of steam. The metal is probably:
  A)
   iron           
  done clear
  B)
   potassium
  done clear
  C)
   copper        
  done clear
  D)
   mercury
  done clear
  View Answer play_arrow

• question_answer87) The number of alpha and beta particles  emitted in the chain of reactions leading to the decay of\[_{\text{92}}^{\text{238}}\text{U}\]to \[_{\text{82}}^{\text{206}}\text{Pb:}\]
  A)
   8 beta particles and 6 alpha particles
  done clear
  B)
   5 alpha particles and 0 beta particles
  done clear
  C)
   8 alpha and 6 beta particles
  done clear
  D)
   10 alpha particles and 10 beta particles
  done clear
  View Answer play_arrow

• question_answer88) Hydrogen peroxide when added to a solution of potassium permanganate acidified with sulphuric acid:
  A)
   forms water only
  done clear
  B)
   acts as an oxidizing agent
  done clear
  C)
   acts as a reducing agent
  done clear
  D)
   reduces sulphuric acid
  done clear
  View Answer play_arrow

• question_answer89) The equilibrium molecular structure of hydrogen peroxide is:
  A)
   planar as given below  linear
  done clear
  B)
   tetrahedral
  done clear
  C)
   non planar
  done clear
  View Answer play_arrow

• question_answer90) Consider the following compounds.

  (i) Sulphur dioxide

  (ii) Hydrogen peroxide

  (iii) Ozone

  Among these compounds identify those that can act as bleaching agent:
  A)
   1 and 3        
  done clear
  B)
   2 and 3
  done clear
  C)
   1 and 2       
  done clear
  D)
   1, 2 and 3
  done clear
  View Answer play_arrow

• question_answer91) Alkali metals have high oxidation potential and hence, they behave as:
  A)
   oxidizing agents
  done clear
  B)
   Lewis bases
  done clear
  C)
   reducing agents
  done clear
  D)
   electrolytes
  done clear
  View Answer play_arrow

• question_answer92) Water is oxidized to oxygen by:
  A)
  \[Cl{{O}_{2}}\]
  done clear
  B)
   \[KMn{{O}_{4}}\]
  done clear
  C)
   \[{{H}_{2}}{{O}_{2}}\]
  done clear
  D)
   fluorine
  done clear
  View Answer play_arrow

• question_answer93) Identify the incorrect statement:
  A)
   The molarity of a solution is independent of temperature
  done clear
  B)
   The tendency for catenation is much higher for carbon than for silicon
  done clear
  C)
   Nitriles and iso nitriles constitute metamers
  done clear
  D)
   t-buty 1 carbocation has planar carbons and is very reactive
  done clear
  View Answer play_arrow

• question_answer94) The magnetic momenta\[\mu ,\]of transition metals is related to the number of unpaired electrons,\[n\] as:
  A)
  \[\mu =n{{(n+2)}^{2}}\]
  done clear
  B)
   \[\mu ={{n}^{2}}(n+2)\]
  done clear
  C)
   \[\mu =\frac{n}{(n+2)}\]
  done clear
  D)
   \[\mu =\frac{n}{\sqrt{n+2}}\]
  done clear
  View Answer play_arrow

• question_answer95) Which one of the following statement is wrong?
  A)
   The IUPAC name of\[[Co{{(N{{H}_{3}})}_{6}}C{{l}_{3}}]\] is hexamine cobalt (III) chloride
  done clear
  B)
   Dibenzol peroxide is a catalyst in the polymerization of PVC
  done clear
  C)
   Borosilicate glass is heat resistant
  done clear
  D)
   Concentrated\[\text{HN}{{\text{O}}_{\text{3}}}\]can be safely tranported in aluminium containers
  done clear
  View Answer play_arrow

• question_answer96) Which of the following is not a thermoplastic?  
  A)
   Polystyrene
  done clear
  B)
   Teflon
  done clear
  C)
   Polyvinyl chloride  
  done clear
  D)
   Nylon-6, 6
  done clear
  View Answer play_arrow

• question_answer97) Which set is the correct pairing set (or contains complementary pairs) responsible for the structure of DNA? (A-adenine,     G-guanine,     C-cystosine, T-thymine, U-uracil)
  A)
   A-T, G-C       
  done clear
  B)
   A-C, G-T
  done clear
  C)
   A-G, C-T       
  done clear
  D)
   A-U, G-C
  done clear
  View Answer play_arrow

• question_answer98) Barbituric acid and its derivatives are well known as:
  A)
   tranquilizers    
  done clear
  B)
   antiseptics
  done clear
  C)
   analgesics      
  done clear
  D)
   antipyretics
  done clear
  View Answer play_arrow

• question_answer99) The rate of a reaction is doubled for every \[\text{1}{{\text{0}}^{\text{o}}}\] rise in temperature. The increase in reaction rate as a result of temperature rise from \[\text{1}{{\text{0}}^{\text{o}}}\] to \[\text{10}{{\text{0}}^{\text{o}}}\] is:
  A)
   112          
  done clear
  B)
   512
  done clear
  C)
   400          
  done clear
  D)
   614
  done clear
  View Answer play_arrow

• question_answer100) The first artificial disintegration of an atomic nucleus was achieved by:
  A)
   Geiger        
  done clear
  B)
   Wilson
  done clear
  C)
   Madam Curie  
  done clear
  D)
   Rutherford
  done clear
  View Answer play_arrow

• question_answer101) The study related to the structure and function of a cell is called as:
  A)
   Physiology     
  done clear
  B)
   Cytology
  done clear
  C)
   Histology      
  done clear
  D)
   Cellology
  done clear
  View Answer play_arrow

• question_answer102) The longest phase of meiosis -I is:
  A)
   metaphase-I   
  done clear
  B)
   prophase-I
  done clear
  C)
   anaphase-I     
  done clear
  D)
   telophase-I
  done clear
  View Answer play_arrow

• question_answer103) Fluid mosaic model was given by:
  A)
   Knoll arid Ruska   
  done clear
  B)
   Singer and Ruska
  done clear
  C)
   Singer and Nicolson
  done clear
  D)
   Bateson and Punnet
  done clear
  View Answer play_arrow

• question_answer104) Colchicine prevents the mitosis of cell at:
  A)
   prophase stage
  done clear
  B)
   anaphase stage
  done clear
  C)
   telophase stage
  done clear
  D)
   metaphase stage
  done clear
  View Answer play_arrow

• question_answer105)  Phylogenetic system of classification was proposed by:       
  A)
   Linnaeus      
  done clear
  B)
   Bentham
  done clear
  C)
   Hutchinson    
  done clear
  D)
   Theophrastus
  done clear
  View Answer play_arrow

• question_answer106) The first acceptor of \[\text{C}{{\text{O}}_{\text{2}}}\]in \[{{\text{C}}_{4}}\] plant is:
  A)
   Pyruvic acid
  done clear
  B)
   phosphoenol pyruvic acid
  done clear
  C)
   acetic acid
  done clear
  D)
   oxaloacetic acid
  done clear
  View Answer play_arrow

• question_answer107) The term mitochondria was given by:
  A)
   Benda        
  done clear
  B)
   Altmann
  done clear
  C)
   Palade        
  done clear
  D)
   deDuve
  done clear
  View Answer play_arrow

• question_answer108) Auxanometer is used to measure:
  A)
   length         
  done clear
  B)
   width
  done clear
  C)
   depth         
  done clear
  D)
   growth
  done clear
  View Answer play_arrow

• question_answer109) The term protoplasm was coined by:
  A)
   Virchow       
  done clear
  B)
   Purkinje
  done clear
  C)
   Dujardin       
  done clear
  D)
   Kolliker
  done clear
  View Answer play_arrow

• question_answer110) In Ulothrix meiosis occurs in:
  A)
   gamete        
  done clear
  B)
   zygdspore
  done clear
  C)
   zoospore      
  done clear
  D)
   thallus
  done clear
  View Answer play_arrow

• question_answer111) Fern gametophyte bears:
  A)
   archegonia     
  done clear
  B)
   antheridia
  done clear
  C)
   sporangia      
  done clear
  D)
   both [a] and [b]
  done clear
  View Answer play_arrow

• question_answer112) Alexander Flemming in 1929 discovered:
  A)
   penicillin      
  done clear
  B)
   streptomycin
  done clear
  C)
   tetracyclin     
  done clear
  D)
   chloromycidn
  done clear
  View Answer play_arrow

• question_answer113) Lichens are:
  A)
   sporophyte    
  done clear
  B)
   parasite
  done clear
  C)
   symbionts     
  done clear
  D)
   predator
  done clear
  View Answer play_arrow

• question_answer114) Parachute mechanism of seed dispersal is seen in:
  A)
   Poppy         
  done clear
  B)
   Helianthus
  done clear
  C)
   Plumbago      
  done clear
  D)
   Lotus
  done clear
  View Answer play_arrow

• question_answer115) Lomentum is a kind of:
  A)
   inflorescence   
  done clear
  B)
   plant
  done clear
  C)
   fruit           
  done clear
  D)
   insect
  done clear
  View Answer play_arrow

• question_answer116) Which of the following is considered as a recessive character of Mendel?
  A)
   Round seed    
  done clear
  B)
   Wrinkled seed
  done clear
  C)
   Axial flower    
  done clear
  D)
   Green pod
  done clear
  View Answer play_arrow

• question_answer117) In which of the following parthenocarpy makes no sense:
  A)
   banana       
  done clear
  B)
   orange
  done clear
  C)
   lemon        
  done clear
  D)
   pomegranate
  done clear
  View Answer play_arrow

• question_answer118) Man made allopolyploid cereal crop is:
  A)
   Raphano brassica
  done clear
  B)
   Triticale                      
  done clear
  C)
   Pomato
  done clear
  D)
   None of the above
  done clear
  View Answer play_arrow

• question_answer119) Cellular respiration occurs in:
  A)
   chloroplast    
  done clear
  B)
   Golgi bodies
  done clear
  C)
   mitochondria  
  done clear
  D)
   nucleus
  done clear
  View Answer play_arrow

• question_answer120) Enzymes are functional at:
  A)
  \[10-15{{\,}^{o}}C\]       
  done clear
  B)
  \[15-25{{\,}^{o}}C\]
  done clear
  C)
  \[25-30{{\,}^{o}}C\]       
  done clear
  D)
  \[30-50{{\,}^{o}}C\]
  done clear
  View Answer play_arrow

• question_answer121) Multiplication of DNA is called:
  A)
   translation     
  done clear
  B)
   replication
  done clear
  C)
   transduction   
  done clear
  D)
   transcription
  done clear
  View Answer play_arrow

• question_answer122)  The pigment sensitive for red and far-red light is:
  A)
   chlorophyll    
  done clear
  B)
   phytochrome
  done clear
  C)
   cytochrome    
  done clear
  D)
   carotene
  done clear
  View Answer play_arrow

• question_answer123) Decomposers are:
  A)
   autotrophs     
  done clear
  B)
   heterdtrophs
  done clear
  C)
   organotrophs  
  done clear
  D)
   autoheterotrophs
  done clear
  View Answer play_arrow

• question_answer124) Acid rain is due to the pollution by:
  A)
   \[\text{C}{{\text{O}}_{\text{2}}}\]
  done clear
  B)
  \[S{{O}_{2}}\]and \[N{{O}_{2}}\]
  done clear
  C)
   dust particles  
  done clear
  D)
   automobiles
  done clear
  View Answer play_arrow

• question_answer125) Ovule with fimiculus lying close to micropyle is known as:
  A)
   anatropous    
  done clear
  B)
   campylotropous
  done clear
  C)
   atropous      
  done clear
  D)
   cytokinin
  done clear
  View Answer play_arrow

• question_answer126) Hormone preventing seed dormancy is:
  A)
   auxin          
  done clear
  B)
   gibberellin
  done clear
  C)
   ethylene      
  done clear
  D)
   cytokinin
  done clear
  View Answer play_arrow

• question_answer127) In CAM plants stomata are:
  A)
   closed to night and open during the day
  done clear
  B)
   closed during the day arid open at night
  done clear
  C)
   never closes
  done clear
  D)
   never opens
  done clear
  View Answer play_arrow

• question_answer128) Which of the following is biodegradable pollutant?
  A)
   Sewage       
  done clear
  B)
   Plastic
  done clear
  C)
   Polythene     
  done clear
  D)
   DDT
  done clear
  View Answer play_arrow

• question_answer129) In dicot stem secondary growth is due to the activity of:
  A)
   apical meristem
  done clear
  B)
   lateral meristem
  done clear
  C)
   cork           
  done clear
  D)
   bark
  done clear
  View Answer play_arrow

• question_answer130) The real force responsible for the movement of water from cell to cell is:
  A)
   OP           
  done clear
  B)
   TP
  done clear
  C)
   DPD          
  done clear
  D)
   BP
  done clear
  View Answer play_arrow

• question_answer131) The inflorescence found in Ficus is known as:
  A)
   cyathium      
  done clear
  B)
   catkin
  done clear
  C)
   sycpnus       
  done clear
  D)
   hypanthodium
  done clear
  View Answer play_arrow

• question_answer132) In Opuntia the spines are modification of:
  A)
   leaf           
  done clear
  B)
   branch
  done clear
  C)
   epidermis      
  done clear
  D)
   flower
  done clear
  View Answer play_arrow

• question_answer133) 'Witches broom' disease is caused by:
  A)
   fungus          
  done clear
  B)
   mycoplasma
  done clear
  C)
   bacteria       
  done clear
  D)
   mineral
  done clear
  View Answer play_arrow

• question_answer134) Antiviral substance is:
  A)
   antigen        
  done clear
  B)
   antibody
  done clear
  C)
   interferon      
  done clear
  D)
   intron
  done clear
  View Answer play_arrow

• question_answer135) Which of the following is symbiotic bacteria?
  A)
   Rhizobium     
  done clear
  B)
   Azotobactor
  done clear
  C)
   Clostridium    
  done clear
  D)
   Streptomyces
  done clear
  View Answer play_arrow

• question_answer136) The thallus of Volvox is called:
  A)
   trichome      
  done clear
  B)
   coenobium
  done clear
  C)
   coenocyte     
  done clear
  D)
   parenchymatous
  done clear
  View Answer play_arrow

• question_answer137) Resin duct of gymnospermous stem is an example of:
  A)
   lysigenous cavity
  done clear
  B)
   lysogenous cavity
  done clear
  C)
   shizogenous cavity
  done clear
  D)
   shizolysigenous cavity
  done clear
  View Answer play_arrow

• question_answer138) During food chain the maximum energy is stored in:
  A)
   producers     
  done clear
  B)
   decomposers
  done clear
  C)
   herbivores     
  done clear
  D)
   carnivores
  done clear
  View Answer play_arrow

• question_answer139) Insectivorous plant usually survive in:        
  A)
   water rich soil                            
  done clear
  B)
   \[{{N}_{2}}\]deficient soil             
  done clear
  C)
   \[{{N}_{2}}\]rich soil
  done clear
  D)
   sugar deficient' medium                 
  done clear
  View Answer play_arrow

• question_answer140) Spore of Funaria on germination give rise to:  
  A)
   protonema    
  done clear
  B)
   embryo            
  done clear
  C)
   antheridia     
  done clear
  D)
   archegonia         
  done clear
  View Answer play_arrow

• question_answer141) The function of a vessel is:
  A)
   conduction of food
  done clear
  B)
   conduction of water and minerals
  done clear
  C)
   conduction of hormones
  done clear
  D)
    all of the above
  done clear
  View Answer play_arrow

• question_answer142) In the phosphorus cycle, weathering makes phosphate available first to:
  A)
   decomposers  
  done clear
  B)
   consumers
  done clear
  C)
   producers
  done clear
  D)
   all of these
  done clear
  View Answer play_arrow

• question_answer143) Periderm includes:
  A)
   cork, cork cambium
  done clear
  B)
   secondary cortex
  done clear
  C)
   cork
  done clear
  D)
   cork, cork cambium and secondary cortex
  done clear
  View Answer play_arrow

• question_answer144)  In a food chains the total amount of living material is depicted by:
  A)
   pyramid of biomass
  done clear
  B)
   pyramid of energy
  done clear
  C)
   pyramid of number
  done clear
  D)
   trophic levels
  done clear
  View Answer play_arrow

• question_answer145) In the process of photosynthesis water molecule breaks in:
  A)
   red drop
  done clear
  B)
   photolysis
  done clear
  C)
   phosphorylation
  done clear
  D)
   carbon assimilation
  done clear
  View Answer play_arrow

• question_answer146) Syngamy is the process in which:
  A)
   male gamete fuses with female gamete
  done clear
  B)
   pollen tube enters into the ovule through micropyle
  done clear
  C)
   pollen tube enter into the ovule through chalaza
  done clear
  D)
   vegetative cell and tube cell fuse
  done clear
  View Answer play_arrow

• question_answer147) The 1:2:1 ratio with the pink flower in the \[{{\text{F}}_{\text{2}}}\]generation indicate the phenomenon of:
  A)
   dominance
  done clear
  B)
   codominance
  done clear
  C)
   incomplete dominance
  done clear
  D)
   segregation
  done clear
  View Answer play_arrow

• question_answer148) The chemical produced by the host plant to protect themselves against fungal infection is:
  A)
   toxin          
  done clear
  B)
   phytoalexin
  done clear
  C)
   phytotoxin     
  done clear
  D)
   hormone
  done clear
  View Answer play_arrow

• question_answer149) The   phenomenon   'ontogeny   repeats 'phylogeny? is explained by:
  A)
   natural selection
  done clear
  B)
   inheritance theory
  done clear
  C)
   mutation theory
  done clear
  D)
   recapitulation theory
  done clear
  View Answer play_arrow

• question_answer150) Nitrates are converted to nitrogen by:
  A)
   nitrogen fixing bacteria
  done clear
  B)
   ammomfication bacteria
  done clear
  C)
   denitrifying bacteria
  done clear
  D)
   nitrifying bacteria
  done clear
  View Answer play_arrow