# 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)  $-2\,\vec{A},0$

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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) $m{{v}^{2}}$

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• 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

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• 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) $At\,{{P}_{3}}$

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• 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) $\frac{e}{10}\text{coulomb}$

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• 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

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• 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) $50\,\mu F$

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• 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

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• 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

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• 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) $\sqrt{24}$

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• 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) View Answer play_arrow
• 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

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• 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) $4M$

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• question_answer20) The surface temperature is maximum for:

A) blue star

B) yellow star

C) green star

D) red star

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

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• 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

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• 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 $589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,$

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• 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) $\frac{1}{2}$

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• 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) $\pi /=2$

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

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

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• 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

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• 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

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• 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) $\lambda =\pi A/4$

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• 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

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

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• 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

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

A) B) C) D) View Answer play_arrow
• 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) $\frac{1}{2}$

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• 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) $\frac{26}{25}$

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• 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

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• 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

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• 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

C) radiotracer technique

D) gamma ray spectroscopy

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• 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) $RCL$

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• 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) $\frac{0.6}{\sqrt{2}}A$

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• 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

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• 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) $4\,\Omega$

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• 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) $1\,kg$

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• 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

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• 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) $7.5\times {{10}^{-11}}C$

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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

A) Testosterone

B) Lipase

C) Keratin

D) Haemoglobin

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• 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

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• question_answer55) pH-scale was proposed by:

A) Arrhenius

B) Sorenson

C) Pierre de Coubertin

D) none of the above

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• question_answer56) Thomas slag is:

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

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• question_answer57) Mohrs salt is

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

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

A) Caesium

B) Fluorine

C) Xenon

D) Nitrogen

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

A) Ethyl amine

B) Ethane nitrile

C) Nitroethane

D) Ethanamide

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• question_answer60) Which of the following is poisonous?

A) Methanol

B) Ethanol

C) Glycerol

D) Castor oil

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• 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

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• 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

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• 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

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• 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

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• 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

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• 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

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• question_answer67) Which radioisotope is used in the treatment of Leukeamia?

A) $P-32$

B) $Na-24$

C) $1-128$

D) $Co-59$

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• 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

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

A) electrophoresis

B) dialysis

C) chromatography

D) peptisation

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• 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

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• question_answer71) How many conformers are known of ethane?

A) Two

B) Three

C) $>3$

D) Ethane cannot show conformation

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• question_answer72) Interfering radicals interfere in the usual test of:

A) acid radicals

B) basic radicals

C) both [a] and [b]

D) none of these

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• question_answer73) Flux in the smelting process is added to:

A) decrease the solubility of impurities

B) increase the fusion temperature of roasted ore

C) convert impurities into slag

D) all of the above

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• 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

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• 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) $2NO+{{O}_{2}}2N{{O}_{2}}$

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• 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

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• question_answer77) Representative elements are:

A) $s-$block elements

B) p-block elements

C) both [a] and [b]

D) none of these

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• 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

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• 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) $sp$

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• 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) $~-28.6\text{ }eV$

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• 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

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• 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

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• 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) $C{{H}_{3}}COC{{H}_{2}}COOH$

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• 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

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• 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

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

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

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

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

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

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

A) Peptisation

B) Bredigs arc method

C) Double decomposition

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

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• 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

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• 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

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

A) Methanol

B) Ethyl carbinol

C) Pentanol-3

D) Methyl carbinol

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• question_answer91) Human body is an example of:

A) open system

B) closed system

C) isolated system

D) none of these

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• 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

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

A) $Fe$

B) $Al$

C) $Na$

D) All of these

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

A) chain isomerism

B) tautomerism

C) metamerism

D) optical isomerism

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• 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

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

A) $NaCl$

B) $CuCl$

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

D) $CsCl$

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• 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) ${{K}_{p}}\ge {{k}_{c}}$

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

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

A) Dolomite

B) Tinstone

C) Galena

D) Bauxite

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

A) RNA

B) Oxytocin

C) Cholesterol

D) Amylose

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

A) CCC

B) GGG

C) UUU

D) AAA

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

A) fats

B) proteins

C) starch

D) vitamins

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• question_answer103) The thermoregulatory centre in the body is:

A) spinal cord

B) hypothalamus

C) cerebellum

D) pituitary

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• question_answer104) Which is not cancer?

A) Leukemia

B) Trachoma

C) Carcinoma

D) Sarcoma

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• 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

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• 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

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• question_answer107) In the animal body blood bank is:

A) heart

B) spleen

C) lungs

D) liver

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• question_answer108) Addisons disease results from:

A) hypertrophy of gonads

B) hypo-secretion of adrenal cortex

C) hyperactivity of cells of Leydig

D) none of the above

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• question_answer109) LSD is obtained from:

A) Claviceps purpurea

B) Rauwolffia serpentina

C) Pdpayer somniferum

D) Cannabis sativa

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• question_answer110) Australopithecus existed in:

A) Pliocene

B) Miocene

C) Pleistocene

D) Both [a] and [b]

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

A) Calvin

B) Mayer

C) Blackman

D) Ruben, Hassid and Kamen

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

A) plasmolysis

B) photolysis

C) hydrolysis

D) haemolysis

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• question_answer113) Heroin is obtained from plant of family:

A) Papaveraceae

B) Leguminosae

C) Cruciferae

D) Liliaceae

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• 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

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• 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

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• question_answer116) Immunoglobin found abundantly in serum is:

A) IgM

B) IgA

C) IgN

D) IgG

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• 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

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• 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

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• question_answer119) Contraction of gall bladder is carried by:

A) rennin

B) gastrin

C) cholecystokinin

D) none of the above

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

A) chiasmata

B) Ban-bodies

C) sex-chromosomes

D) drumsticks

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

A) Darwin

B) Wallace

C) Lamarck

D) de Vries

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

A) emasculation

B) anthesis

C) pollination

D) for collection of pollen

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• 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

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• 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

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

A) cadmium

B) lead

C) mercury

D) copper

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• question_answer126) VAM is useful for:

A) phosphate nutrition

B) breaking of dormancy

C) decrease in diseases

D) retarding flowering

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• question_answer127) Parathyroid hormone is a:

A) peptide

B) carbohydrate

C) lipid

D) steroid

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• question_answer128) A clone is:

A) heterozygote. obtained asexually

B) homozygote obtained asexually

C) heterozygote produced by sexual methods

D) homozygote produced by sexual reproduction

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• question_answer129) A petroleum plant is:

A) Euphorbia lathyrus

B) Acaciaarabica

C) Pinus roxburghii

D) Prosopis cineraria

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• question_answer130) Progesterone hormone is secreted by:

A) corpus albicans

B) corpus callosum

C) corpus luteum in ovaries

D) corpus uteri

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• question_answer131) Triploid endosperm occurs only in:

A) angiosperms

B) gymnosperms

C) pteridophytes

D) spermatophytes

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• question_answer132) Cinchona offlcinalis belongs to family:

A) Cruciferae,

B) Malvaceae

C) Rubiaceae

D) Leguminosae

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• question_answer133) Meiosis in AaBb will produce gametes:

A) AB, aB, Ab, ab

B) AB, ab

C) Aa, bb

D) Aa, Bb

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• question_answer134) Respiratory centre in brain occurs in:

A) medulla oblongata

B) cerebellum

C) hypothalamus

D) pericardium

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• question_answer135) Capitulum inflorescence is found in:

A) Liliaceae

B) Papilionaceae

C) Compositae

D) Rosaceae

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• question_answer136) Mutations are generally induced by means of:

A) $\alpha -rays$

B) $\beta -rays$

C) $\gamma -rays$

D) UV radiations

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• question_answer137) Pollen grains are shed at:

A) 1-celled stage

B) 2-3- celled stage

C) 4- celled stage

D) 5- celled stage

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• question_answer138) Turners syndrome is caused by:

A) polyploidy

B) autosomal aneuploidy

C) sex-chromosome aneuploidy

D) trisomy

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

A) Hugo de Vries

B) Charles Darwin

C) Herbert Spencer

D) Jean Baptiste Lamarck

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• question_answer140) Entry of pollen tube through micropyle is:

A) porogamy

B) mesogamy

C) pseudogamy

D) chalazogamy

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• question_answer141) Micropyle helps in:

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

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• 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

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• question_answer143) Microbial insecticide is:

A) Bacillus polymixa

B) Bacillus brevis

C) Bacillus subtilis

D) Bacillus thuringiensis

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• question_answer144) Gas released during Bhopal tragedy was:

A) sodium isothiocyanate

B) methyl isocyanate

C) potassium isothiocyanate

D) ethyl isothiocyanate

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

A) Epicarp

B) Mesocarp

C) Endocarp

D) Both [b] and [c]

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• question_answer146) In pond ecosystem, diatoms represent:

A) producers

B) primary consumers

C) secondary consumers

D) tertiary consumers

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• question_answer147) Sorosis is found in:

A) jack fruit

B) mulberry

C) fig

D) both [a] and [b]

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• question_answer148) Sertoli cells are involved in:

A) respiration

B) nutrition of sperms

C) excretion

D) development of sex organs

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• question_answer149) The myocardium is found in :

A) heart of mammals

B) brain of mammals

C) lungs of mammals

D) testes of mammals

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• question_answer150) Plasmid is:

A) plastid

B) algae

C) fungus

D) extra nuclear DNA of bacterial cell

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