# Solved papers for JCECE Medical JCECE Medical Solved Paper-2004

### done JCECE Medical Solved Paper-2004

• question_answer1) The direction of vector $\overset{\to }{\mathop{\text{A}}}\,$ is reversed. What are the values $\Delta \overset{\to }{\mathop{\text{A}}}\,$ and $\Delta |\overset{\to }{\mathop{\text{A}}}\,|$ ?

A)  $+\,2\vec{A},0$

B) $+\,\vec{A},0$

C)  $-\,\vec{A},0$

D)  $-2\,\vec{A},0$

• question_answer2) The velocity of a body moving with uniform acceleration at a given instant of time t is 10 m/s. After 5 s its velocity is 20 m/s. Distance travelled in that time is:

A) 300m

B) 400m

C) 150m

D) 75m

• question_answer3) A stone falls freely such that the distance covered by It in the last second of its motion is equal to the distance covered by it in the first 5 s. It is in air for:

A) 26s

B) 25s

C) 13s

D) 12s

• question_answer4) A child is swinging a swing. Minimum and maximum heights of swing from earths surface are 0.75 m and 2m respectively. The maximum velocity of this swing is:

A) 5 m/s

B) 10 m/s

C) 15 m/s

D) 20 m/s

• question_answer5) An object is thrown along a direction making an angle ${{45}^{o}}$ with the horizontal direction. The horizontal range of the object is equal to:

A) twice the vertical height

B) vertical height

C) four times the vertical height

D) three times the vertical height

• question_answer6) A fireman wants to slide down a rope. The breaking load for the rope is$\frac{\text{3}}{\text{4}}\text{th}$ of the weight of the man. With what acceleration should the fireman slide down? (Acceleration due to gravity is g)

A) $\frac{g}{2}$

B) $\frac{g}{4}$

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

D) zero

• question_answer7) A body of mass 1 kg is rotating in a vertical circle of radius 1m. What will be (he difference in kinetic energy at the top and at the bottom of the circle? (Take$g=10\,m/{{s}^{2}}$)

A) 50 J

B) 30 J

C) 20 J

D) 10 J

• question_answer8) A circular ring of mass m and radius r is rolling on a smooth horizontal surface with speed v. Its kinetic energy is:

A) $\frac{1}{8}m{{v}^{2}}$

B) $\frac{1}{4}m{{v}^{2}}$

C) $\frac{1}{3}m{{v}^{2}}$

D) $m{{v}^{2}}$

• question_answer9) A satellite is revolving around the earth in a circular orbit of radius 4 times that of the parking orbit. The time period of the .satellite

A) 16 days

B) 2 days

C) 4 days

D) 8 days

• question_answer10) As shown in figure, a planet revolves in elliptical orbit around the sun. Where is KE of the planet maximum?

A) $At\,{{P}_{4}}$

B) $At\,{{P}_{1}}$

C) $At\,{{P}_{2}}$

D) $At\,{{P}_{3}}$

• question_answer11) If the condenser shown in the circuit is charged to 5 V and left in the circuit, in 12 s the charge on the condenser will become:

A) $\frac{10}{e}\text{coulomb}$

B) $\frac{{{e}^{2}}}{10}\text{coulomb}$

C) $\frac{10}{{{e}^{2}}}\text{coulomb}$

D) $\frac{e}{10}\text{coulomb}$

• question_answer12) A sings with a frequency $(n)$and B sings with a frequency 1/8 that of A. If the energy remains the same and the amplitude of A is a, the amplitude of B will be:

A) 2a

B) 8 a

C) 4a

D) a

• question_answer13) Reactance of a capacitor of capacitance $C\,\mu F$for AC frequency $\frac{\text{400}}{\text{ }\!\!\pi\!\!\text{ }}\text{Hz}$is $25\,\Omega ,$ the value of C is:

A) $75\,\mu F$

B) $100\,\mu F$

C) $25\,\mu F$

D) $50\,\mu F$

• question_answer14) An electron and a proton have same de-Broglie wavelength, then kinetic energy of the electron is:

A) greater than KE of proton

B) zero

C) equal to KE of proton

D) infinite

• question_answer15) Relative permeability of iron is 5500. Its magnetic susceptibility is:

A) 5499

B) $5500\times {{10}^{7}}$

C) $5500\times {{10}^{-7}}$

D) 5501

• question_answer16) A force of $7\hat{i}+6\hat{k}$makes a body to move on a plane with the velocity $3\hat{i}+4\hat{k}.$ The power developed is:

A) $\sqrt{45}$

B) 45

C) 24

D) $\sqrt{24}$

• question_answer17) The variation of PV with V of a fixed mass of an ideal gas at constant temperature is graphically represented by as shown in figure:

A)

B)

C)

D)

• question_answer18) The number of oxygen molecules in a cylinder of volume $\text{1}{{\text{m}}^{\text{3}}}$at a temperature of $\text{27}{{\,}^{\text{o}}}\text{C}$and pressure of 13.8 Pa is: (Boltzmanns constant$k=1.38\times {{10}^{-23}}\,J{{K}^{-1}}$)

A) $6.23\times {{10}^{26}}$

B) $0.33\times {{10}^{28}}$

C) $3.3\times {{10}^{21}}$

D) none of these

• question_answer19) The minimum magnifying power of a telescope is M. If the focal length of the eye lens is halved, the magnifying power will become:

A) $\frac{M}{4}$

B) $3M$

C) $2M$

D) $4M$

• question_answer20) The surface temperature is maximum for:

A) blue star

B) yellow star

C) green star

D) red star

• question_answer21) A convergent doublet of separated lens, corrected for spherical aberration, are separated by 2 cm and has an equivalent focal length of 10 cm. The focal length of its component lenses are:

A) ${{f}_{1}}=18\,cm,\,{{f}_{2}}=10\,cm$

B) ${{f}_{1}}=20\,cm,\,{{f}_{2}}=28\,cm$

C) ${{f}_{1}}=20\,cm,\,{{f}_{2}}=18\,cm$

D) ${{f}_{1}}=24\,cm,\,{{f}_{2}}=18\,cm$

• question_answer22) In Youngs experiment using light of wavelength $6000\overset{\text{o}}{\mathop{\text{A}}}\,,$ fringe width obtained at distance 2.5 m is 0.8 mm. If the entire apparatus is immersed in a liquid of refractive. index 1.6, the fringe width Will be:

A) 0.2 mm

B) 0.4 mm

C) 0.5mm

D) 0.6 mm

• question_answer23) In double slit experiment, the angular width of interference fringes with sodium light $(\lambda =5890\,\overset{\text{o}}{\mathop{\text{A}}}\,)$is $\text{0}\text{.2}{{\text{0}}^{\text{o}}}\text{.}$ The change in wavelength required to increase the angular width by 10% will be:

A) zero

B) increased by $6479\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,$

C) increased by $589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,$

D) decreased by $589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer24) SHM is executed by a particle of mass $m.$The displacement of the particle is $\left( \frac{1}{\sqrt{2}} \right)$times the amplitude. What fraction of the total energy is kinetic at this displacement?

A) $\frac{\sqrt{3}}{2}$

B) $\frac{1}{\sqrt{2}}$

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

D) $\frac{1}{2}$

• question_answer25) The period of SHM of a particle is 12 s. The phase difference between the positions at $t=3\,s$and $t=4s$will be:

A) $\pi /4$

B) $3\pi /5$

C) $\pi /6$

D) $\pi /=2$

• question_answer26) The volume of a metal sphere increases by $\text{0}\text{.15 }\!\!%\!\!\text{ }$when its temperature is raised by$\text{24}{{\,}^{\text{o}}}\text{C}\text{.}$The coefficient of linear expansion of metal is:

A) $2.5\times {{10}^{-5}}/{{\,}^{o}}C$

B) $2.0\times {{10}^{-5}}/{{\,}^{o}}C$

C) $1.5\times {{10}^{-5}}/{{\,}^{o}}C\,$

D) $1.2\times {{10}^{-5}}/{{\,}^{o}}C\,$

• question_answer27) The radii of two soap bubbles are ${{r}_{1}}$and${{r}_{2}}$$({{r}_{2}}>{{r}_{1}}).$When they come into contact, the radius of their common interface is:

A) ${{r}_{2}}-{{r}_{1}}$

B) $\sqrt{r_{1}^{2}-r_{2}^{2}}$

C) $\frac{{{r}_{1}}+{{r}_{2}}}{2}$

D) $\frac{{{r}_{1}}{{r}_{2}}}{{{r}_{1}}-{{r}_{2}}}$

• question_answer28) A ray of light is incident on the surface of a glass slab at $\text{6}{{\text{0}}^{\text{o}}}\text{.}$ The refractive index of glass, if the reflected and refracted rays are mutually perpendicular to each other, will be:

A) 1.5

B) 4.16

C) 2.25

D) 1.73

• question_answer29) A stretched string is 1 m long. Its mass per unit length is 0.5 g/m. It is stretched with a force of 20 N. It is plucked at a distance of 25 cm from one end. The frequency of note emitted by it will be:

A) 400 m

B) 300 Hz

C) 200 Hz

D) 100 Hz

• question_answer30) A transverse wave is given by $y=A\,\sin 2\pi (ft-x/\lambda ).$The maximum particle velocity is 4 times the wave velocity when:

A) $\lambda =2\,\pi A$

B) $\lambda =\pi A$

C) $\lambda =\pi A/2$

D) $\lambda =\pi A/4$

• question_answer31) The energy in eV of red light of wavelength $\lambda =6560\overset{\text{o}}{\mathop{\text{A}}}\,$ is:

A) 1.89 eV

B) 2.89 eV

C) 3.89 eV

D) 4.89 Ev

• question_answer32) The wavelength of first member of Lyman series is $1215\overset{\text{o}}{\mathop{\text{A}}}\,.$ The wavelength of ${{\text{H}}_{\text{ }\!\!\alpha\!\!\text{ }}}$line is:

A) $6561\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $5464\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $800\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $4840\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer33) When silver is irradiated by ultraviolet light of $1000\overset{\text{o}}{\mathop{\text{A}}}\,,$potential of 7.7 V is required to stop the photo electrons. The work function of silver will be:

A) 3.72 eV

B) 6.72 eV

C) 5.72 eV

D) 4.67eV

• question_answer34) Maximum kinetic energy${{E}_{k}}$of a photoelectron varies with the frequency$v$of the incident radiation as:

A)

B)

C)

D)

• question_answer35) A radioactive element has half-life period 1600 yr. After 6400 yr, what part of element will remain?

A) $\frac{1}{4}$

B) $\frac{1}{8}$

C) $\frac{1}{16}$

D) $\frac{1}{2}$

• question_answer36) For a transistor${{I}_{E}}=25\,mA$ and ${{I}_{B}}=1\,mA,$the value of current gain $\alpha$ will be:

A) $\frac{25}{24}$

B) $\frac{24}{25}$

C) $\frac{25}{26}$

D) $\frac{26}{25}$

• question_answer37) When two semiconductors of p and n type are brought into contact, they form a $p-n$junction which acts like a:

A) rectifier

B) amplifier

C) oscillator

D) conductor

• question_answer38) The de-Broglie wavelength of 1 kg mass moving with a velocity of 10 m/s, will be]:

A) $6.626\times {{10}^{-35}}m$

B) $6.626\times {{10}^{-34}}m$

C) $6.626\times {{10}^{-33}}m$

D) none of these

• question_answer39) Radioactive nuclei that are injected into a patient collected at certain sites within its body, undergoing radioactive decay and emitting electromagnetic radiation. These radiations can then be recorded by a detector. This procedure provides an important diagnostic tools called:

A) gamma camera

B) CAT scan

D) gamma ray spectroscopy

• question_answer40) If R, C and L denote resistance, capacitance and inductance. Which of the following will not have the dimensions of frequency?

A) $R{{L}^{-1}}$

B) ${{R}^{-1}}{{C}^{-1}}$

C) ${{L}^{-1/2}}{{C}^{-1/2}}$

D) $RCL$

• question_answer41) A $10\,\mu F$capacitor is connected across a 200 V, 50 Hz AC supply. The peak current through the circuit is:

A) $0.6\sqrt{2}A$

B) $0.6\,A$

C) $\frac{0.6\pi }{2}A$

D) $\frac{0.6}{\sqrt{2}}A$

• question_answer42) What is the energy stored in a 50 mH inductor carrying a current of 4A?

A) 0.2 J

B) 0.4 J

C) 0.05 J

D) 0.1 J

• question_answer43) In an ammeter, 4% of the main current is passing through galvanometer. If the galvanometer is shunted with a $5\Omega$resistance, the resistance of the galvanometer is:

A) $120\,\Omega$

B) $20\,\Omega$

C) $5\,\Omega$

D) $4\,\Omega$

• question_answer44) If 100 kWh of energy is consumed at 33 V in a copper voltameter, what is the mass of copper liberated? (Electrochemical equivalent of copper is$0.33\times {{10}^{-6}}kg/C$)

A) $1\,mg$

B) $3.6\,kg$

C) $3.3\,kg$

D) $1\,kg$

• question_answer45) Four identical resistors when connected in series dissipate 5 W power. If they are connected in parallel, the power dissipated will be:

A) 80 W

B) 60 W

C) 40 W

D) 20 W

• question_answer46) What is the magnitude of the point charge due to which the electric field 30 cm away has the magnitude of 2N/C? $\left( \frac{1}{4\pi {{\varepsilon }_{0}}}=9\times {{10}^{9}}N{{M}^{2}}/{{C}^{2}} \right)$

A) $4\times {{10}^{-11}}C$

B) $2\times {{10}^{-11}}C$

C) $5.4\times {{10}^{-11}}C$

D) $7.5\times {{10}^{-11}}C$

• question_answer47) A parallel plate capacitor is immersed in an oil of dielectric constant 2. The field between the plates is:

A) decreased, by a factor of$\frac{1}{\sqrt{2}}$

B) increased, by a factor of $\sqrt{2}$

C) increased, by a factor of$\frac{1}{2}$

D) decreased, by a factor of 2

• question_answer48) A triode valve has an amplification factor of 20 and its plate is given a potential of 300 V. The grid-voltage to reduce the plate current to zero, is :

A) 25V

B) 15V

C) 12V

D) 10 V

• question_answer49) In an ideal parallel LC circuit, the capacitor is charged by connecting it to a DC source which is then disconnected. -The current in the circuit:

A) becomes zero instantaneously

B) grows monotonically,

C) decays monotonically

D) oscillates instantaneously

• question_answer50) For a satellite moving in an orbit around the earth, the ratio of kinetic to potential energy is:

A) 1 : 2

B) 2 : 1

C) 1:1

D) 4:1

• question_answer51) Which of the following Statements, about zero order reaction is not true?

A) Its rate constant unit is ${{s}^{-1}}$

B) The graph between time and rate of reaction is a straight line

C) Rate of reaction is independent of concentration of reactants

D) None of the above

• question_answer52) The amount of${{\text{H}}_{\text{2}}}\text{S}\text{.}$required to precipitate $\text{1}\text{.69 g BaS}$from$\text{BaC}{{\text{l}}_{\text{2}}}$solution is:

A) 3.4 g

B) 0.034 g

C) 0.34 g

D) 0.17g

• question_answer53) Which of the following is not a protein?

A) Testosterone

B) Lipase

C) Keratin

D) Haemoglobin

• question_answer54) The reaction, $C{{H}_{3}}COC{{H}_{3}}\xrightarrow[(ii)\,\text{KOH},\text{glcol}]{(i)\,N{{H}_{2}}N{{H}_{2}}}C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}$ is known as:

A) Clemmensens reduction

B) Blancs reduction

C) Birch reduction

D) Wolff-Kishner reduction

• question_answer55) pH-scale was proposed by:

A) Arrhenius

B) Sorenson

C) Pierre de Coubertin

D) none of the above

A) $C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.2{{H}_{2}}O$

B) $C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.CaSi{{O}_{3}}$

C) $MgSi{{O}_{3}}$

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

A) $N{{a}_{2}}S{{O}_{4}}.A{{l}_{2}}(S{{O}_{4}}).24{{H}_{2}}O$

B) $CuS{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O$

C) $FeS{{O}_{4}}.{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.6{{H}_{2}}O$

D) ${{K}_{2}}S{{O}_{4}}.F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O$

• question_answer58) Which of the following has maximum ionisation energy?

A) Caesium

B) Fluorine

C) Xenon

D) Nitrogen

• question_answer59) Which of the following give ammonia, on heating with NaOH?

A) Ethyl amine

B) Ethane nitrile

C) Nitroethane

D) Ethanamide

• question_answer60) Which of the following is poisonous?

A) Methanol

B) Ethanol

C) Glycerol

D) Castor oil

• question_answer61) Which of the following fraction of coal tar distillation is obtained at ${{270}^{o}}-{{360}^{o}}C$?

A) Light oil

B) Middle oil

C) Green oil

D) Heavy oil

• question_answer62) The amount of oxalic acid, required to prepare 300 mL 2.5 M solution, is:

A) 67.5 g

B) 9.45 g

C) 6.75 g

D) 94.5 g

• question_answer63) The carbon di-oxide gas does not follow gaseous laws at all ranges of pressure and temperature because:

A) it is triatpmic gas

B) its internal energy is quite high

C) there is attraction between its, molecules

D) it solidify at low temperature

• question_answer64) The bond-angle in $\text{As}{{\text{H}}_{\text{3}}}$is greater than that in:

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

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

C) $BC{{l}_{3}}$

D) none of these

• question_answer65) Which of the following gas, diffuse most slowly?

A) ${{C}_{2}}{{H}_{6}}$

B) ${{C}_{2}}{{H}_{4}}$

C) $C{{H}_{4}}$

D) All of these diffuse at equal rate

• question_answer66) Oxidation number of fluorine is+1 in:

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

B) $N{{F}_{3}}$

C) both [a] and [b]

D) none of these

A) $P-32$

B) $Na-24$

C) $1-128$

D) $Co-59$

• question_answer68) A metal having higher value of ${{\text{E}}^{\text{o}}}\text{,}$can:

A) replace hydrogen from dilute ${{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}$

B) replace hydrogen from concentrate ${{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}$

C) act as oxidising agent

D) all of the above

• question_answer69) The method, which is used to purify colloidal solution is:

A) electrophoresis

B) dialysis

C) chromatography

D) peptisation

• question_answer70) Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal $\text{AgN}{{\text{O}}_{3}}$solution. Which gas will come out of wolf bottle?

A) Only ethyne

B) Ethane and ethyne

C) Ethane and ethene

D) Ethane, ethene and propene

• question_answer71) How many conformers are known of ethane?

A) Two

B) Three

C) $>3$

D) Ethane cannot show conformation

C) both [a] and [b]

D) none of these

A) decrease the solubility of impurities

B) increase the fusion temperature of roasted ore

C) convert impurities into slag

D) all of the above

• question_answer74) The heat of formation of $\text{MgO,A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}$and $\text{Si}{{\text{O}}_{2}}$are $-692,\,-1676,-911,\,\text{kJ}\text{mo}{{\text{l}}^{-1}}.$ Most stable oxide is:

A) $MgO$

B) $A{{l}_{2}}{{O}_{3}}$

C) $Si{{O}_{2}}$

D) cannot be predicted

• question_answer75) Which of the following reaction, will be favoured by low pressure?

A) $PC{{l}_{5}}PC{{l}_{3}}+C{{l}_{2}}$

B) ${{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}$

C) ${{H}_{2}}+\frac{1}{2}{{O}_{2}}{{H}_{2}}O$

D) $2NO+{{O}_{2}}2N{{O}_{2}}$

• question_answer76) In III group of basic radical analysis, $N{{H}_{4}}Cl$is added before group reagent $N{{H}_{4}}OH.$This is done to:

A) increase the solubility product of III group salts

B) decrease the solubility product of III group salts

C) increase the ionic product of $\text{O}{{\text{H}}^{-}}$and III group radicals

D) decrease the degree of ionisation of group reagent

A) $s-$block elements

B) p-block elements

C) both [a] and [b]

D) none of these

• question_answer78) Which of the following equation is used in Paulings scale of electronegativity?

A) ${{x}_{A}}=0.187(IE+EA)+0.17$

B) ${{x}_{A}}-{{x}_{B}}=0.182$

C) ${{[{{E}_{A-B}}-\sqrt{({{E}_{A-A}}\times {{E}_{B-B}})}]}^{1/2}}$

D) None of the above

• question_answer79) Which hybridisation has sulphur in $S{{O}_{2}}$?

A) $s{{p}^{2}}$

B) $s{{p}^{3}}{{d}^{2}}$

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

D) $sp$

• question_answer80) The energy of last electron of Li will be:

A) $-30.6\text{ }eV$

B) $~-13.6\text{ }eV$

C) $-24.6\text{ }eV$

D) $~-28.6\text{ }eV$

• question_answer81) Benzaldehyde, in presence of dil. NaOH, changes into benzyl alcohol and sodium benzoate. This reaction is an example of:

A) rearrangement

B) oxidation

C) disproportionation

D) none of the above

• question_answer82) Which of the following is the strongest acid?

A) o-nitro benzoic acid

B) $m-$nitro benzoic acid

C) $m-$ chloro benzoic acid

D) $m-$ cyano benzoic acid

• question_answer83) What is the product X in the reaction, $C{{H}_{3}}COCl\xrightarrow{C{{H}_{3}}COONa}X?$

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

B) ${{(C{{H}_{3}}CO)}_{2}}O$

C) $C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}$

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

• question_answer84) A 0.5 g/L solution of glucose is found to be isotonic with a 2.5 g/L solution of an organic compound. What will be the molecular weight of that organic compound?

A) 300

B) 600

C) 925

D) 1200

• question_answer85) Which of the following ion does not follow EAN rule?

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

B) ${{[Ag{{(CN)}_{2}}]}^{-}}$

C) ${{[PtC{{l}_{6}}]}^{2-}}$

D) None of these

• question_answer86) Potassium, on burning in oxygen atmosphere, gives:

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

B) ${{K}_{2}}{{O}_{3}}$

C) $K{{O}_{2}}$

D) ${{K}_{2}}{{O}_{2}}$

• question_answer87) Which method is employed to prepare copper sol?

A) Peptisation

B) Bredigs arc method

C) Double decomposition

D) Reduction of $\text{CuC}{{\text{l}}_{\text{2}}}$

• question_answer88) How much copper will be deposited at cathode, on passing 4 coulomb charge in 15 min?

A) 0.0195 g

B) 0.0013 g

C) 0.020 g

D) 0.0020 g

• question_answer89) If 50 % of a radioactive substance dissociates in 15 min, then the time taken by substance to dissociate 99% will be:

A) 50 min

B) 100 min

C) 99 min

D) 150 min

• question_answer90) Which of the following alcohol give positive iodoform test?

A) Methanol

B) Ethyl carbinol

C) Pentanol-3

D) Methyl carbinol

• question_answer91) Human body is an example of:

A) open system

B) closed system

C) isolated system

D) none of these

• question_answer92) The atomic size of cerium and promethium is quite close, due to:

A) they are in same period in periodic table

B) their electronic configuration is same

C) $f-$ electrons have poor shielding effect

D) nuclear charge is higher oil cerium than promethium

• question_answer93) Brown glass and cement have/ which element common in them?

A) $Fe$

B) $Al$

C) $Na$

D) All of these

• question_answer94) The most common isomerism found in ethers, is:

A) chain isomerism

B) tautomerism

C) metamerism

D) optical isomerism

• question_answer95) $t-$butyl chloride preferrably undergo hydrolysis by:

A) ${{S}_{N}}1$ mechanism

B) ${{S}_{N}}2$ mechanism

C) any of [a] and [b]

D) none of the above

• question_answer96) Which of the following has lowest boiling point?

A) $NaCl$

B) $CuCl$

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

D) $CsCl$

• question_answer97) Which of the following is true for the reaction $CO(g)+\frac{1}{2}{{O}_{2}}(g)C{{O}_{2}}(g)$

A) ${{K}_{p}}>{{k}_{c}}$

B) ${{K}_{p}}<{{k}_{c}}$

C) ${{K}_{p}}={{k}_{c}}$

D) ${{K}_{p}}\ge {{k}_{c}}$

• question_answer98) Which of the following is not a buffer solution?

A) $C{{H}_{3}}COOH+C{{H}_{3}}COONa$

B) ${{H}_{3}}B{{O}_{3}}+N{{a}_{3}}B{{O}_{3}}$

C) $HCl{{O}_{4}}+NaCl{{O}_{4}}$

D) $N{{H}_{4}}OH+{{(N{{H}_{4}})}_{2}}S{{O}_{4}}$

• question_answer99) Which of the following ore is concentrated by both, magnetic and gravimetric separation?

A) Dolomite

B) Tinstone

C) Galena

D) Bauxite

• question_answer100) Which of the following is not a polymer?

A) RNA

B) Oxytocin

C) Cholesterol

D) Amylose

• question_answer101) The first codon discovered by Nirenberg and Mathaei was:

A) CCC

B) GGG

C) UUU

D) AAA

• question_answer102) Maximum amount of energy/ATP is liberated on oxidation of:

A) fats

B) proteins

C) starch

D) vitamins

• question_answer103) The thermoregulatory centre in the body is:

A) spinal cord

B) hypothalamus

C) cerebellum

D) pituitary

• question_answer104) Which is not cancer?

A) Leukemia

B) Trachoma

C) Carcinoma

D) Sarcoma

• question_answer105) Bio gas production from waste bio mass with the help of methanogenic bacteria is:

A) multi step process

B) one step process

C) two step process

D) three step process

• question_answer106) Pace-maker in heart is situated:

A) in the wall of left atrium

B) in the wall of right atrium

C) on inter-auricular septum

D) on inter-ventricular septum

• question_answer107) In the animal body blood bank is:

A) heart

B) spleen

C) lungs

D) liver

C) hyperactivity of cells of Leydig

D) none of the above

• question_answer109) LSD is obtained from:

A) Claviceps purpurea

B) Rauwolffia serpentina

C) Pdpayer somniferum

D) Cannabis sativa

A) Pliocene

B) Miocene

C) Pleistocene

D) Both [a] and [b]

• question_answer111) who proved that oxygen evolved in photosynthesis comes from water?

A) Calvin

B) Mayer

C) Blackman

D) Ruben, Hassid and Kamen

• question_answer112) The process in which water is split during photosynthesis is:

A) plasmolysis

B) photolysis

C) hydrolysis

D) haemolysis

• question_answer113) Heroin is obtained from plant of family:

A) Papaveraceae

B) Leguminosae

C) Cruciferae

D) Liliaceae

• question_answer114) HIV has a protein coat and a genetic material which is:

A) ss-RNA

B) ds-RNA

C) ds-DNA

D) ss-DNA

• question_answer115) More$\text{C}{{\text{O}}_{\text{2}}}$is evolved than the volume of oxygen consumed. when the respiratory substrate is:

A) fat

B) sucrose

C) glucose

D) organic acid

• question_answer116) Immunoglobin found abundantly in serum is:

A) IgM

B) IgA

C) IgN

D) IgG

• question_answer117) During the process of blood coagulation vitamin-K helps in the:

A) formation of thromboplastin

B) formation of prothrombin

C) conversion of prothrombin to thrombin

D) conversion of fibrinogen to fibrin

• question_answer118) Krebs cycle begins with the reaction:

A) citric acid+ acetyl Co-A

B) oxaloacetic acid + pyruvic acid

C) oxaloacetic acid + Citric acid

D) oxaloacetic + acetyl Co-A

A) rennin

B) gastrin

C) cholecystokinin

D) none of the above

• question_answer120) Foetal sex is determined by examining cells from amniotic fluid looking for:

A) chiasmata

B) Ban-bodies

C) sex-chromosomes

D) drumsticks

• question_answer121) Theory of inheritance of acquired characters was given by:

A) Darwin

B) Wallace

C) Lamarck

D) de Vries

• question_answer122) Removal of anthers of, some flowers during plant breeding is:

A) emasculation

B) anthesis

C) pollination

D) for collection of pollen

• question_answer123) Transgenic crops are modified through genetic engineering to develop natural resistance to insect pests. Which one is a transgenic plant?

A) Tobacco and cotton

B) Tomato and rice

C) Maize and sugarcane

D) Tomato and wheat

• question_answer124) Neo-Darwinism believes that new species develops through:

A) mutations

B) hybridization

C) mutations with natural selection

D) continuous variations with natural selection

• question_answer125) Most hazardous metal pollutant of automobile exhaust is:

C) mercury

D) copper

• question_answer126) VAM is useful for:

A) phosphate nutrition

B) breaking of dormancy

C) decrease in diseases

D) retarding flowering

• question_answer127) Parathyroid hormone is a:

A) peptide

B) carbohydrate

C) lipid

D) steroid

A) heterozygote. obtained asexually

B) homozygote obtained asexually

C) heterozygote produced by sexual methods

D) homozygote produced by sexual reproduction

• question_answer129) A petroleum plant is:

A) Euphorbia lathyrus

B) Acaciaarabica

C) Pinus roxburghii

D) Prosopis cineraria

• question_answer130) Progesterone hormone is secreted by:

A) corpus albicans

B) corpus callosum

C) corpus luteum in ovaries

D) corpus uteri

• question_answer131) Triploid endosperm occurs only in:

A) angiosperms

B) gymnosperms

C) pteridophytes

D) spermatophytes

• question_answer132) Cinchona offlcinalis belongs to family:

A) Cruciferae,

B) Malvaceae

C) Rubiaceae

D) Leguminosae

• question_answer133) Meiosis in AaBb will produce gametes:

A) AB, aB, Ab, ab

B) AB, ab

C) Aa, bb

D) Aa, Bb

• question_answer134) Respiratory centre in brain occurs in:

A) medulla oblongata

B) cerebellum

C) hypothalamus

D) pericardium

• question_answer135) Capitulum inflorescence is found in:

A) Liliaceae

B) Papilionaceae

C) Compositae

D) Rosaceae

• question_answer136) Mutations are generally induced by means of:

A) $\alpha -rays$

B) $\beta -rays$

C) $\gamma -rays$

• question_answer137) Pollen grains are shed at:

A) 1-celled stage

B) 2-3- celled stage

C) 4- celled stage

D) 5- celled stage

• question_answer138) Turners syndrome is caused by:

A) polyploidy

B) autosomal aneuploidy

C) sex-chromosome aneuploidy

D) trisomy

• question_answer139) Phrase Survival of the Fittest was used by:

A) Hugo de Vries

B) Charles Darwin

C) Herbert Spencer

D) Jean Baptiste Lamarck

• question_answer140) Entry of pollen tube through micropyle is:

A) porogamy

B) mesogamy

C) pseudogamy

D) chalazogamy

A) germination of pollen grain

B) growth of pollen tube

C) coming out of pollen tube from pollen grain

D) allowing entry of pollen tube

• question_answer142) In mature RBC, nucleus is present in:

A) frog

B) rabbit

C) both [a] and [b]

D) neither in frog noir in rabbit

A) Bacillus polymixa

B) Bacillus brevis

C) Bacillus subtilis

D) Bacillus thuringiensis

• question_answer144) Gas released during Bhopal tragedy was:

A) sodium isothiocyanate

B) methyl isocyanate

C) potassium isothiocyanate

D) ethyl isothiocyanate

• question_answer145) banana, which of the following part is edible?

A) Epicarp

B) Mesocarp

C) Endocarp

D) Both [b] and [c]

• question_answer146) In pond ecosystem, diatoms represent:

A) producers

B) primary consumers

C) secondary consumers

D) tertiary consumers

• question_answer147) Sorosis is found in:

A) jack fruit

B) mulberry

C) fig

D) both [a] and [b]

• question_answer148) Sertoli cells are involved in:

A) respiration

B) nutrition of sperms

C) excretion

D) development of sex organs

• question_answer149) The myocardium is found in :

A) heart of mammals

B) brain of mammals

C) lungs of mammals

D) testes of mammals

A) plastid

B) algae

C) fungus

D) extra nuclear DNA of bacterial cell