# Solved papers for BCECE Medical BCECE Medical Solved Papers-2007

### done BCECE Medical Solved Papers-2007

• question_answer1) A body is projected at such angle that the horizontal range is three times the greatest height. The .angle of projection is

A) ${{42}^{o}}8$

B) ${{53}^{o}}7$

C) ${{33}^{o}}7$

D) ${{25}^{o}}8$

• question_answer2) A gas bubble formed from an explosion under water oscillates with a period T proportional to${{P}^{a}}{{d}^{b}}{{E}^{c}}$, where P is pressure, d is the density of water and E is the total energy of explosion. The value of a, b, c are

A) $a=1$, $b=1,\,\,c=2$

B) $a=1$, $b=2,\,\,c=1$

C) $a=\frac{5}{6}$, $b=\frac{1}{2},c=\frac{1}{3}$

D) $a=-\frac{5}{6},b=\frac{1}{2},c=\frac{1}{3}$

• question_answer3) A particle moving with a uniform acceleration travels 24m and 64m in the first two consecutive interval of 4 s each. Its initial velocity will be

A) 5 m/s

B) 3m/s

C) 1 m/s

D) 4 m/s

• question_answer4) Two equal vectors have a resultant equal to either of them, then the angle between them will be

A) ${{120}^{o}}$

B) ${{110}^{o}}$

C) ${{60}^{o}}$

D) ${{150}^{o}}$

• question_answer5) If the radius of earth of R then the height h at which the value of g becomes one fourth, will be

A) $\frac{R}{8}$

B) $\frac{3R}{8}$

C) $\frac{3R}{4}$

D) $\frac{R}{2}$

• question_answer6) A body moves a distance of 10 m along a straight line under a action of 5 N force. If work done is 25 J, then angle between the force and direction of motion of the body will be

A) ${{75}^{o}}$

B) ${{60}^{o}}$

C) ${{45}^{o}}$

D) ${{30}^{o}}$

• question_answer7) If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be

A) 40 J

B) 110 J

C) 150 J

D) 260 J

• question_answer8) Sum-of the two binary numbers ${{(100010)}_{2}}$ and ${{(11011)}_{2}}$ is

A) ${{(111111)}_{2}}$

B) ${{(101111)}_{2}}$

C) ${{(111001)}_{2}}$

D) ${{(111101)}_{2}}$

• question_answer9) What is the velocity of the bob of a simple pendulum at its mean position, if it is able to rise to vertical height of 10 cm? $(g=9.8\,\,m/{{s}^{2}})$

A) 2.2 m/s

B) 1.8 m/s

C) 1.4 m/s

D) 0.6 m/s

• question_answer10) A body cools from ${{60}^{o}}C$ to ${{50}^{o}}C$ in 10 min. If the room temperature is ${{25}^{o}}C$ and assuming Newton law of cooling to hold good, the temperature of the body at the end of the next 10 min will be

A) ${{45}^{o}}C$

B) ${{42.85}^{o}}C$

C) ${{40}^{o}}C$

D) ${{38.5}^{o}}C$

• question_answer11) At ${{27}^{o}}C$ a gas suddenly compressed such that its pressure becomes $\frac{1}{8}th$ of original pressure. The temperature of the gas will be $(\gamma =5/3)$

A) $-{{142}^{o}}C$

B) 300 K

C) ${{327}^{o}}C$

D) 420 K

• question_answer12) An ideal refrigerator has a freezer at a temperature of $-{{13}^{o}}C$. The coefficient o performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

A) ${{325}^{o}}C$

B) 325 K

C) ${{39}^{o}}C$

D) ${{320}^{o}}C$

• question_answer13) In a capacitor of capacitance 20$\mu F$ the distance between the plates is 2 mm. If a dielectric slab of width 1 mm and dielectric constant 2 is inserted between the plates, then the new capacitance will be

A) 22$\mu F$

B) 26.6 $\mu F$

C) 52.2 $\mu F$

D) 13 $\mu F$

• question_answer14) An automobile spring extends 0.2 m for 5000 N load. The ratio of potential energy stored in this spring when it has been compressed by 0.2 m to the potential energy stored in a 10 $\mu F$capacitor at a potential difference of 10000 V will be

A) 1/4

B) 1

C) 1/2

D) 2

• question_answer15) A solid metallic sphere has a charge + 3Q. Concentric with this sphere is a conducting spherical shell having charge - Q. The radius of the sphere is a and that of the spherical shell is$b(b>a)$. What is the electric field at a distance $R(a<R<b)$ from the centre?

A) $\frac{4Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}$

B) $\frac{3Q}{4\pi \,{{\varepsilon }_{0}}{{R}^{2}}}$

C) $\frac{3Q}{2\pi \,{{\varepsilon }_{0}}{{R}^{2}}}$

D) $\frac{Q}{2\pi \,{{\varepsilon }_{0}}R}$

• question_answer16) Output Y is given by :

A) $(\overline{X}\,.\,\,\overline{Y})\,.\,\,Z$

B) $(X\,.\,\,Y)\,.\,\,Z$

C) $(X\,+\,Y)\overline{Z}$

D) $(\overline{X}\,.\,\overline{Y}+\overline{Z}$

• question_answer17) In a network as shown in the figure, the potential difference across the resistance 2R is (the cell has an emf of ? volts and has no internal resistance)

A) 2E

B) $\frac{4E}{7}$

C) $\frac{E}{7}$

D) E

• question_answer18) The resistance of a galvanometer coil is R, then the shunt resistance required to convert it into a ammeter of range 4 times, will be

A) 4R

B) $\frac{R}{3}$

C) $\frac{R}{4}$

D) $\frac{R}{5}$

• question_answer19) The instrument used by doctors for endoscopy works on the principle of

A) total internal reflection

B) reflection

C) refraction

D) none of the above

• question_answer20) A meter stick is held vertically with one end on the floor and is then allowed to fall. Assuming that the end on the floor the stick does not slip, the velocity of the other end when it hits the floor, will be

A) 10.8 m/s

B) 5.4 m/s

C) 2.5 m/s

D) none of these

• question_answer21) If the coefficient of static friction between the tyres and road is 0.5, what is the shortest distance in which an automobile can be stopped when travelling at 72 km/h?

A) 50 m

B) 60 m

C) 40.8 m

D) 80.16 m

• question_answer22) A bullet fired at an angle of ${{30}^{o}}$ with the horizontal hits the ground 3 km away. By adjusting its angle of projection, can one hope to hit a target 5 km, away. Assume the muzzle speed to be same and the air resistance is negligible

A) possible to hit a target 5 km away

B) not possible to hit a target 5 km away

C) prediction is not possible

D) none of the above

• question_answer23) Two springs of spring constant 1500 N/m and 3000 N/m respectively are stretched with the same force. They will have potential energy in ratio

A) 1 : 2

B) 2 : 1

C) 1 : 4

D) 4 : 1

• question_answer24) The elastic energy stored in a wire of Youngs modulus Y is

A) $\frac{1}{2}Y\times$ stress x strain $\times$ volume

B) $\frac{{{(stress)}^{2}}\times volume}{2Y}$

C) stress $\times$strain $\times$ volume

D) $Y\times \frac{{{(stress)}^{2}}}{volume}$

• question_answer25) A soap bubble A of radius 0.03 and another bubble B of radius 0.04 m are brought together so that the combined bubble has a common interface of radius r, then the value of r is

A) 0.24m

B) 0.48m

C) 0.12m

D) none of these

• question_answer26) An air bubble of radius ${{10}^{-2}}$ m is rising up at a steady rate of $2\times {{10}^{-3}}$m/s through a liquid of ,density $1.5\times {{10}^{3}}kg/{{m}^{3}}$, the coefficient of viscosity neglecting the density of air, will be $(g=10\,\,m/{{s}^{2}})$

A) 23.2 units

B) 83.5 units

C) 334 units

D) 167 units

• question_answer27) A Carnot reversible engine converts 1/6 of heat input into work. When the temperature of the sink is reduced by 62 K, the efficiency of Carnots cycle becomes 1/3. The temperature of the source and sink will be

A) 372 K, 310 K

B) 181 K, 150 K

C) 472 K, 410 K

D) none of the above

• question_answer28) The ratio of the coefficient of thermal conductivity of two different materials is 5 : 3. If the thermal resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be

A) 3 : 5

B) 5 : 3

C) 3 : 4

D) 3 : 2

• question_answer29) Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after 2 s. If bulk modulus of elasticity of water is $2\times {{10}^{9}}N/{{m}^{2}}$ and mean temperature is ${{4}^{o}}C$, the depth of the sea will be

A) 1014 m

B) 1414 m

C) 2828 m

D) none of these

• question_answer30) Sound waves of $f=600$ Hz fall normally on a perfectly reflecting wall. The shortest distance from the wall at which all particles will have maximum amplitude of vibration will be (speed of sound = 300 m/s)

A) $\frac{7}{8}$m

B) $\frac{3}{8}$m

C) $\frac{1}{8}$m

D) $\frac{1}{4}$m

• question_answer31) A pipe closed at one end produces a fundamental note of 412 Hz. It is cut into two pieces of equal length the fundamental notes produced by the two pieces are

A) 824 Hz, 1648 Hz

B) 412 Hz, 824 Hz

C) 206 Hz, 412 Hz

D) 216 Hz, 824 Hz

• question_answer32) The refractive index of water and glycerine are 1.33 and 1.47 respectively. What is the critical angle for a light ray going from the later to the former?

A) ${{60}^{o}}48$

B) ${{64}^{o}}48$

C) ${{74}^{o}}48$

D) None of these

• question_answer33) Lenses of power 3 D and -5D are combined to form a compound lens. An object is placed at a distance or 50 cm from this lens. Its image will be formed at a distance from the lens, will be

A) 25 cm

B) 20 cm

C) 30 cm

D) 40 cm

• question_answer34) If fringes width $\lambda =5.89\times {{10}^{-5}}cm$ is 0.431 mm and shift of white central fringe on introducing a mica sheet in one path is 1.89 mm. Thickness of the mica sheet will be $(\mu =1.59)$

A) $4.38\times {{10}^{-6}}m$

B) $5.38\times {{10}^{-6}}m$

C) $6.38\times {{10}^{-6}}m$

D) none of these

• question_answer35) A body is orbiting around earth at a mean radius which is two times as greater as the parking orbit of a satellite, the period of body is

A) 4 days

B) 16 days

C) $2\sqrt{2}$days

D) 64 days

• question_answer36) A radioactive substance has half-life of 60 min. During 3 h, the fraction of the substance that has to be decayed, will be

A) 87.5%

B) 52.5%

C) 25.5%

D) 8.5%

• question_answer37) Voltage in the secondary coil of a transformer does not depend upon

A) frequency of the source

B) voltage in the primary coil

C) ratio of number of turns in the two coils

D) both [b] and [c]

• question_answer38) When n-p-n transistor is used as an amplifier

A) electrons move from emitter to base

B) electrons move from base to emitter

C) electrons move from collector to base

D) holes move from base to emitter

• question_answer39) $_{7}{{N}^{14}}$ is bombarded with $_{2}H{{e}^{4}}$. The resulting nucleus is $_{8}{{O}^{17}}$ with the emission of

A) neutrino

B) antineutrino

C) proton

D) neutron

• question_answer40) In the given figure the steady state current in the circuit i&

A) zero

B) 0.6 A

C) 0.9 A

D) 1.5 A

• question_answer41) The time of vibration of a dip needle vibration in the vertical plane in the magnetic meridian is 3 s. When the same magnetic needle is made to vibrate in the horizontal plane, the time of vibration is $3\sqrt{2}$s. Then angle of dip will be

A) ${{90}^{o}}$

B) ${{60}^{o}}$

C) ${{45}^{o}}$

D) ${{30}^{o}}$

• question_answer42) The inductance of the oscillatory circuit of a radio station is 10 mH and its capacitance is 0.25$\mu F$. Taking the effect of resistance negligible, wavelength of the broadcasted waves will be (velocity of light$3.0\times {{10}^{8}}\,m/s,\,\pi =3.14$)

A) $9.42\times {{10}^{4}}\,m$

B) $18.8\times {{10}^{4}}\,m$

C) $4.5\times {{10}^{4}}\,m$

D) none of these

• question_answer43) The ${{K}_{\alpha }}$ line of singly ionised calcium has a wavelength of 393.3 nm as measured on earth. In the spectrum of one of the observed galaxies, the spectral line is located at 401.8 nm. The speed with which this galaxy is moving away from us, will be

A) 7400 m/s

B) $32.4\times {{10}^{2}}$m/s

C) 6480 km/s

D) none of these

• question_answer44) In a common-base circuit of a transistor, current amplification factor is 0.95. The base current when emitter current is 2 mA, will be

A) 0.2 mA

B) 0.1 mA

C) 0.002 mA

D) none of these

• question_answer45) Cathode rays of velocity ${{10}^{6}}$ m/s describe an approximate circular path of radius 1 m in an electric field 300 V/cm. If the velocity of the cathode rays are doubled. The value of electric field so that the rays describe the same circular path, will be

A) 2400 V/cm

B) 600 V/cm

C) 1200 V/cm

D) 12000 V/cm

• question_answer46) Light of wavelength 5000 A falling on a sensitive surface. If the surface has received ${{10}^{-7}}J$ of energy, then the number of photons falling on the surface will be

A) $5\times {{10}^{11}}$

B) $2.5\times {{10}^{11}}$

C) $3\times {{10}^{11}}$

D) none of these

• question_answer47) An X-ray machine is opearated at 40 kV. The short wavelength limit of continuous X-rays will be ($h=6.63\times {{10}^{-34}}Js,\,c=3\times {{10}^{8}}m/s$$,\,e=1.6\times {{10}^{-19}}C$)

A) 0.31 $\overset{o}{\mathop{A}}\,$

B) 0.62 $\overset{o}{\mathop{A}}\,$

C) 0.155 $\overset{o}{\mathop{A}}\,$

D) 0.62 $\overset{o}{\mathop{A}}\,$

• question_answer48) The wavelength of the first spectral line of sodium is 5896$\overset{o}{\mathop{A}}\,$. The first excitation potential of sodium atom will be $(h=6.63\times {{10}^{-34}}Js)$

A) 4.2V

B) 3.5V

C) 2.1V

D) none of these

• question_answer49) If 200 MeV energy is released in the fission of a single nucleus of$_{92}{{U}^{235}}$. How many fissions must occur per second to produce a power of 1kW?

A) $3.125\times {{10}^{13}}$

B) $6.25\times {{10}^{13}}$

C) $1.525\times {{10}^{13}}$

D) None of these

• question_answer50) The energy supplied to calculate by state electricity board during an average November day was 40 mkh. If this energy could be obtained by the conversion of matter, how much mass will be annihilated?

A) 3.2 g

B) 6.4 g

C) 1.6 g

D) 2.5 g

• question_answer51) Which one of the following represents noble gas configuration?

A) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}$, $5{{s}^{2}},5{{p}^{6}}5{{d}^{6}},6{{s}^{2}}$

B) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}$, $5{{s}^{2}},5{{p}^{6}}5{{d}^{1}},6{{s}^{2}}$

C) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{d}^{10}}$, $5{{s}^{2}}5{{p}^{6}}$

D) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{6}}4{{f}^{14}}$, $5{{s}^{2}}5{{p}^{6}}5{{d}^{1}}$

• question_answer52) The number of unpaired electrons in $Ni{{(CO)}_{4}}$is

A) 0

B) 1

C) 3

D) 4

• question_answer53) Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives

A) ${{C}_{6}}{{H}_{5}}-N=N-{{C}_{6}}{{H}_{5}}$

B) ${{C}_{6}}{{H}_{5}}N{{H}_{2}}$

C) ${{C}_{6}}{{H}_{5}}NO$

D) ${{C}_{6}}{{H}_{6}}NHOH$

• question_answer54) Which one of the following is a correct statement?

A) All metal nitrates are insoluble in water

B) Solubility depends on temperature

C) All metal nitrates are soluble in water

D) All metal nitrates are soluble in alcohol

• question_answer55) Methyl-$\alpha$-D-glucoside and methyl-$\beta$-D glucoside are

A) epimers

B) anomers

C) enantiomers

D) conformational diastereomers

• question_answer56) Which one of the following shows maximum value of paramagnetic behavior?

A) ${{[Sc{{(CN)}_{6}}]}^{3-}}$

B) ${{[Co{{(CN)}_{6}}]}^{3-}}$

C) ${{[Fe{{(CN)}_{6}}]}^{4-}}$

D) ${{[Cr{{(CN)}_{6}}]}^{3-}}$

A) $HCOOH$

B) $C{{H}_{3}}COOH$

C) ${{C}_{6}}{{H}_{5}}COOH$

D) ${{C}_{6}}{{H}_{5}}OH$

• question_answer58) The solubility product of $BaC{{l}_{2}}$ is $4\times {{10}^{-9}}$. Its solubility in mol/L is

A) $4\times {{10}^{-3}}$

B) $4\times {{10}^{-9}}$

C) $1\times {{10}^{-3}}$

D) $1\times {{10}^{-9}}$

• question_answer59) Which one can differentiate between ${{C}_{2}}{{H}_{5}}OH$ and $C{{H}_{3}}OH$?

A) ${{H}_{2}}O$

B) $N{{a}_{2}}C{{O}_{3}}+{{I}_{2}}$

C) $N{{H}_{3}}$

D) $HCl$

• question_answer60) Zinc and cold dil. $HN{{O}_{3}}$ reacts to produce

A) NO

B) $N{{O}_{2}}$

C) $N{{H}_{4}}N{{O}_{3}}$

D) $ZnN{{O}_{3}}$

• question_answer61) For the reaction, ${{H}_{2}}+{{I}_{2}}2HI$, the equilibrium concentration of ${{H}_{2}},\,{{I}_{2}}$ and HI are 8.0, 3.0 and 28.0 mol/L respectively. The equilibrium constant is

A) 28.34

B) 32.66

C) 34.78

D) 38.88

• question_answer62) Tincture of iodine is

A) aqueous solution of ${{I}_{2}}$

B) solution of ${{I}_{2}}$ in aqueous KI

C) alcoholic solution of ${{I}_{2}}$

D) aqueous solution of KI

• question_answer63) The chemical formula of plaster of Paris is

A) $CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O$

B) $CaS{{O}_{4}}.\,{{H}_{2}}O$

C) $CaS{{O}_{4}}.\,2{{H}_{2}}O$

D) $CaS{{O}_{4}}.\,3{{H}_{2}}O$

• question_answer64) Which one of the following has square planar structure?

A) ${{[Ni{{(CN)}_{4}}]}^{2-}}$

B) $[Ni{{(CO)}_{4}}]$

C) ${{[Ni{{(Cl)}_{4}}]}^{2-}}$

D) All of the above

• question_answer65) The oxidation number of chromium in potassium dichromate is

A) +2

B) +4

C) +6

D) +8

• question_answer66) The electronic configuration of most electronegative elements is

A) $1{{s}^{2}},2{{s}^{2}}2{{p}^{5}}$

B) $1{{s}^{2}},2{{s}^{2}}2{{p}^{4}},3{{s}^{1}}$

C) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}3{{p}^{1}}$

D) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}$

• question_answer67) The molecular formula ${{C}_{3}}{{H}_{9}}N$ cannot represent

A) Famine

B) ${{2}^{o}}$amine

C) ${{3}^{o}}$amine

D) quaternary salt

• question_answer68) The bond length between $C-C$ bond in $s{{p}^{2}}$ hybridised molecule is

A) $1.2\overset{o}{\mathop{A}}\,$

B) $1.39\overset{o}{\mathop{A}}\,$

C) $1.33\overset{o}{\mathop{A}}\,$

D) $1.54\overset{o}{\mathop{A}}\,$

• question_answer69) The energy ratio of a photon of wavelength $3000\overset{o}{\mathop{A}}\,$ and $6000\overset{o}{\mathop{A}}\,$ is

A) 1 : 1

B) 2 : 1

C) 1 : 2

D) 1 : 4

• question_answer70) Gas equation $PV=nRT$ is obeyed by ideal gas in

B) isothermal process

C) both [a] and [b]

D) none of the above

• question_answer71) Clemmensens reduction of ketones is carried out in

A) $LiAl{{H}_{4}}$ in ${{H}_{2}}O$

B) glycol and $KOH$

C) Zn-Hg and $HCl$

D) ${{H}_{2}}$ and Pd catalyst

• question_answer72) The planar structure of $B{{F}_{3}}$ can be explained by the fact that $B{{F}_{3}}$ is

A) sp-hybridised

B) $s{{p}^{2}}$-hybridised

C) $s{{p}^{3}}$-hybridised

D) $s{{p}^{3}}$ hybridized

• question_answer73) Reduction of aniline with acetyl chloride in presence of $NaOH$ produce

A) aniline hydrochloride

B) acetanilide

C) p-chloroaniline

D) a red dye

• question_answer74) Which of the following compounds has the highest boiling point?

A) $C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl$

B) $C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}Cl$

C) $C{{H}_{3}}CH(C{{H}_{3}})C{{H}_{2}}Cl$

D) ${{(C{{H}_{3}})}_{3}}CCl$

• question_answer75) An unknown compound D first oxidised to aldehyde and then acetic acid by a dilute solution of ${{K}_{2}}C{{r}_{2}}{{O}_{7}}$ and ${{H}_{2}}S{{O}_{4}}$. The compound D is

A) $C{{H}_{3}}OH$

B) ${{C}_{2}}{{H}_{5}}OH$

C) $C{{H}_{3}}C{{H}_{2}}COOH$

D) $C{{H}_{2}}C{{H}_{2}}CHO$

• question_answer76) Which of the following is not possible?

A) $n=2,\,l=1,\,\,m=0$

B) $n=2,\,l=0,\,\,m=-1$

C) $n=3,\,l=0,\,\,m=0$

D) $n=3,\,l=1,\,\,m=-1$

• question_answer77) A gas expands isothermally against a constant external pressure of 1 atm from a volume of $10\,\,d{{m}^{3}}$to a volume of $20\,\,d{{m}^{3}}$. It absorbs 300 J of thermal energy from its surroundings. The $\Delta U$ is

A) -312J

B) +123J

C) -213J

D) + 231 J

• question_answer78) Phenol is more acidic than alcohol because

A) phenol is more soluble in polar solvents

B) alcohol does not lose hydrogen atom

C) phenoxide ion is stabilised by resonance

D) phenoxide ion do not exhibit resonance

• question_answer79) The element having highest electron affinity is

A) bromine

B) iodine

C) fluorine

D) chlorine

• question_answer80) Bakelite is prepared by the reaction between

A) - phenol and formaldehyde

B) urea and formaldehyde

C) ethylene and glycol

D) -tetramethylene and glycol

• question_answer81) Which one of the following is a conjugated protein?

A) Phosphoprotein

B) Glycoprotein

C) Chromoprotein

D) All of the above

• question_answer82) Iodine test is shown by

A) glucose

B) starch

C) glycogen

D) polypeptide

• question_answer83) A fruity smell is obtained by the reaction of ethanol with

A) $C{{H}_{3}}COC{{H}_{3}}$

B) $PC{{l}_{5}}$

C) $C{{H}_{3}}COOH$

D) $C{{H}_{3}}CHO$

• question_answer84) Cyanide process is used for extraction of

A) Ag

B) Ni

C) Pt

D) Zn

• question_answer85) An acid solution of 0.005 M has a pH of 5. The degree of ionisation of acid is

A) $0.1\times {{10}^{-2}}$

B) $0.2\times {{10}^{-2}}$

C) $0.5\times {{10}^{-4}}$

D) $0.6\times {{10}^{-6}}$

• question_answer86) Which metal gives hydrogen gas on heating with hot concentrated alkali?

A) Ag

B) Ni

C) Zn

D) Cu

• question_answer87) The conversion of ethyl chloride into diethyl ether takes place by

A) Williamsons synthesis

B) Perkins reaction

C) Wurtz reaction

D) Grignard reaction

• question_answer88) $CHC{{l}_{3}}+{{C}_{6}}{{H}_{5}}N{{H}_{2}}+3NaOH\xrightarrow{{}}A$$+3B+3C$ In the above reaction, the product A is

A) chlorobenzene

B) phenyl isocyanide

C) phenyl cyanide

D) phenyl chloride

• question_answer89) A gas is found to have a formula ${{[CO]}_{x}}$. Its vapour density is 70, the $x$ is

A) 3.0

B) 3.5

C) 5.0

D) 6.5

• question_answer90) Which of the following is used as purgative?

A) $HgS$

B) $H{{g}_{2}}C{{l}_{2}}$

C) $HgC{{l}_{2}}$

D) $ZnS{{O}_{4}}$

• question_answer91) Least stable oxide of chlorine is

A) $C{{l}_{2}}O$

B) $Cl{{O}_{2}}$

C) $C{{l}_{2}}{{O}_{7}}$

D) $Cl{{O}_{3}}$

• question_answer92) The sides of safety matches contains

A) red phosphorus + sand powder

B) ${{P}_{4}}{{S}_{3}}$

C) $C{{a}_{3}}{{(PO)}_{4}}+$ glass pieces

D) $KCl{{O}_{3}},\,KN{{O}_{3}}$, sulphur + antimony

• question_answer93) Chemically aspirin is known as

A) salicylic acid

B) salicylaldehyde

C) 2-acetoxybenzoic acid

D) phenyl salicylate

A) Cu + Zn

B) Cu + Sn + Zn

C) Cu + Sn

D) Zn + Sn

• question_answer95) Which cannot be oxidised by ${{H}_{2}}{{O}_{2}}$?

A) $N{{a}_{2}}S{{O}_{3}}$

B) $PbS$

C) KI

D) ${{O}_{3}}$

• question_answer96) The gas not absorbed by coconut charcoal is

A) He

B) Ne

C) Ar

D) Kr

• question_answer97) KI and $CuS{{O}_{4}}$ solutions on mixing produce

A) $C{{u}_{2}}{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

B) $C{{u}_{2}}{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

C) $Cu{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

D) $Cu{{I}_{2}}+{{I}_{2}}+{{K}_{2}}S{{O}_{4}}$

• question_answer98) Vitamin ${{B}_{12}}$ contains

A) Co

B) Mn

C) Mg

D) Fe

B) sodium silicate

C) calcium formate

D) pyrex glass.

• question_answer100) Purification of alumina takes place by

A) Bosch process

B) Halls process

C) Hoopes process

D) Quartation process

• question_answer101) Incubation period of Plasmodium vivax is

A) 14 days

B) 30 days

C) 40 days

D) 32 days

• question_answer102) The canal system is characteristic feature of

A) helminthes

B) coelenterates

C) sponges

D) echinoderms

• question_answer103) In cockroach, excretion occurs through

A) nephral glands

B) nephridia

C) malpighian tubules

D) parotid gland

A) lipids

B) carbohydrates

C) immunoglobulins

D) antiviral particles

• question_answer105) Which of the following is a viral disease?

A) TB

B) Diphtheria

C) Small pox

D) All of these

• question_answer106) In 28 days human ovarian cycle, the ovulation takes place typically on

A) day 1st of cycle

B) day 6th of cycle

C) day 10th of cycle

D) day 14th of cycle

• question_answer107) Trypsinogen is converted to active trypsin by

A) enterokinase

B) secretins

C) enterocrinin

D) ptylin

• question_answer108) Bone marrow is absent in

A) reptiles

B) amphibians

C) aves

D) mammals

• question_answer109) Fluid mosaic model of cell membrane was given by

A) Singer and Tatum

B) Watson

C) Robertson

D) Singer and Nicolson

• question_answer110) Which of the following is a connecting link between glycolysis and Krebs cycle?

A) Citric acid

B) Pyruvic acid

C) Acetyl Co-A

D) Glucose

• question_answer111) Lock and key model of enzyme action was proposed by

A) Kuhne

B) Koshland

C) Buchner

D) Fischer

• question_answer112) Which of the following process needs bacteriophage?

A) Transduction

B) Translation

C) Transformation

D) Conjugation

• question_answer113) Purkinje fibres are present in

A) brain

B) heart

C) blood

D) lungs

• question_answer114) Dissociation curve of haemoglobin is

A) sigmoid

B) parabolic

C) straight line

D) hyperbolic

• question_answer115) The function of Henles loop is

A) passage of urine

B) formation of urine

C) conservation of water

D) filteration of water

• question_answer116) Parathormone is responsible for

A) controlling calcium level in blood

B) decreasing calcium level in blood

C) filteration in nephron

D) increasing absorption of water

• question_answer117) Hinge joint is present between

A) humerus and ulna

B) femur and pectoral girdle

C) humerus and pelvic girdle

D) all of the above

• question_answer118) Pancreas secretes pancreatic juice on stimulation by

A) renin

B) gastrin

C) secretin

D) DDK

• question_answer119) Which of the following is not a granulocyte?

A) Basophils

B) Monocytes

C) Acidophils

D) Neutrophils

• question_answer120) Nerve impulse initiates with the movements of

A) ${{K}^{+}}$

B) $N{{a}^{+}}$

C) $C{{a}^{+}}$

D) $M{{g}^{+}}$

• question_answer121) When an animal has both sexes (male and female), it is called

A) intersex

B) super male

C) gynandromorph

D) super female

A) gastrin

B) cholecystokinin

C) secretin

D) kinase

• question_answer123) Which of the following has discoidal placenta?

A) Rabbit

B) Deer

C) Sheep

D) Pig

• question_answer124) DNA replication takes place in

A) ${{G}_{1}}$-phase

B) S-phase

C) ${{G}_{2}}$-phase

D) Prophase

• question_answer125) Which of the following is a transparent tissue?

A) Tendon

B) Hyaline cartilage

C) Fibrous cartilage

D) All of these

A) purine/pyramidine + phosphate

B) purine/pyramidine + sugar

C) pyramidine + purine + phosphate

D) purine + sugar + phosphate

• question_answer127) Floral formula is of family

A) Papilionasae

B) Mimosoideae

C) Ceasalpinoidae

D) Malvaceae

• question_answer128) Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called

A) apospory

B) apomixis

C) diplospory

• question_answer129) Process of water exudation through hydathodes is known as

A) guttation

B) transpiration

C) evaporation

D) bleeding

• question_answer130) Insectivorous plants grow in

A) nitrogen rich soil

B) nitrogen deficient soil

C) potassium deficient soil

D) carbohydrate rich soil

• question_answer131) Fungus without mycelium is

A) Puccinia

B) Rhizopus

C) Saccharomyces

D) Mucor

• question_answer132) The organelles involved in photorespiration are

A) glyoxisome, chloroplast and mitochondria

B) chloroplast, peroxisome and glyoxisome

C) mitochondria, peroxisome and glyoxisome

D) chloroplast, mitochondria and peroxisome

• question_answer133) Floridean starch is found in

A) Chlorophyceae

B) Myxophyceae

C) Phaeophyceae

D) Rhodophyceae

• question_answer134) The hormone reducing transpiration rate by inducing stomatal closure is

A) ABA

B) ethylene

C) cytokinin

D) auxin

• question_answer135) The pigment involved in photomorphogenetic movements is

A) cytochrome

B) phytochrome

C) chromatin

D) vernalin

• question_answer136) First $C{{O}_{2}}$ receptor in ${{C}_{4}}$ plants is

A) PGA

B) PEP

C) RuBP

D) OAA

• question_answer137) The components of an ecosystem are

A) , trees and weeds

B) plants and animals

C) man and plants

D) biotic and abiotic

• question_answer138) The 10% energy transfer law of food chain was given by

A) Lederberg

B) Lindmann

C) Weismann

D) Lindley

• question_answer139) Reaction centre of photosystem-I in green plants is

A) ${{P}_{680}}~$

B) ${{P}_{690}}~$

C) ${{P}_{700}}~$

D) ${{P}_{780}}~$

• question_answer140) Double fertilization is found in

A) bryophytes

B) angiosperms

C) gymnosperms

D) pteridophytes

• question_answer141) A sporangium derived from a single cell is called

A) leptosporangiate

B) eusporangiate

C) heterosporangiate

D) none of the above

A) mesophytes

B) xerophytes

C) hydrophytes

D) halophytes

• question_answer143) The high yielding hybrid crop varieties to exploit hybrid vigour, the farmers need to purchase fresh hybrid seed every year because

A) hybrid vigour is not long standing due to inbreeding depression

B) they are not allowed to grow their own seed

C) it is always associated with increased heterozygosity

D) government has accepted Dunkels proposals

• question_answer144) Genetic engineering is related with

A) eugenics

B) euphenics

C) euthenics

D) all of these

• question_answer145) Floating roots are the characteristic feature of

A) Viscum

B) Cuscuta

C) Vanda

D) Jussiaea

• question_answer146) The diameter of Z-DNA is

A) 34 $\overset{o}{\mathop{A}}\,$

B) 20 $\overset{o}{\mathop{A}}\,$

C) 18 $\overset{o}{\mathop{A}}\,$

D) 45 $\overset{o}{\mathop{A}}\,$

• question_answer147) The genes, which remain confined to differential region of Y chromosome, are

A) autosomal genes

B) holandric genes

D) mutant genes

• question_answer148) The hormone responsible for ripening of fruits is

A) ethylene

B) cytokinin

C) auxin

D) ABA

• question_answer149) Select the correct statement.

A) legumes are incapable of fixing nitrogen

B) legumes fix nitrogen through bacteria living in fruits root

C) legumes fix nitrogen only by bacteria present in nodules

D) none of the above

• question_answer150) The part of cotton producing pure cellulose is

A) root hair

B) leaf hair

C) seed hair

D) stem hair