Solved papers for JIPMER Jipmer Medical Solved Paper-2015

done Jipmer Medical Solved Paper-2015

• question_answer1) Which of the following is a dimensional constant?

A) Retractive index

B) Poissons ratio

C) Relative density

D) Gravitational constant

• question_answer2) The potential energy between two atoms, in a molecule, is given by$U(x)=\frac{a}{{{x}^{12}}}-\frac{b}{{{x}^{6}}}$where a and b are positive and x is the distance between the atoms. The atom is in stable equilibrium, when:

A) $x=0$

B) $x={{\left( \frac{a}{2b} \right)}^{1/6}}$

C) $x={{\left( \frac{2a}{b} \right)}^{1/6}}$

D) $x={{\left( \frac{11a}{5b} \right)}^{1/16}}$

• question_answer3) A simple pendulum with a bob of mass in oscillates from A to C and back to A such that PB is H. If the acceleration due to gravity is g, then the velocity of the bob as it passes through B is: A) zero

B) $2gH$

C) $mgH$

D) $\sqrt{2gH}$

• question_answer4) Two particles of equal mass go around a circle of radius R under the action of their mutual gravitational attraction. The speed v of each particle is:

A) $\frac{1}{2R}\sqrt{\frac{1}{Gm}}$

B) $\sqrt{\frac{Gm}{2R}}$

C) $\frac{1}{2}\sqrt{\frac{Gm}{R}}$

D) $\sqrt{\frac{4\,Gm}{R}}$

• question_answer5) The length of a sonometer wire AB is 110 cm. Where should the two bridges be placed from A to divide the wire in 3 segments whose fundamental frequencies are in the ratio 1 : 2 : 3?

A) 30 cm and 90 cm

B) 40 cm and 80 cm

C) 60 cm and 90 cm

D) 30 cm and 60 cm

• question_answer6) A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km/s. The wavelength of sound in the tissue is close to:

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

B) $8\times {{10}^{-4}}\,m$

C) $4\times {{10}^{-3}}\,m$

D) $8\times {{10}^{-3}}\,m$

• question_answer7) Percentage errors in the measurement of mass and speed are 2% and 3% respectively. The error in the estimate of kinetic energy obtained by measuring mass and speed will be:

A) 12%

B) 10%

C) 8%

D) 2%

• question_answer8) In an A.C. circuit, the current flowing is $I=5\,\sin \,(100\,t-\pi \text{/}2)$ amperes and the potential difference is V = 200 sin (100t) volts. The power consumption is equal to:

A) 1000 W

B) 40 W

C) 20 W

D) 0 W

• question_answer9) A lens is placed between a source of light and a wall. It forms images of area ${{A}_{1}}$ and ${{A}_{2}}$ on the wall, for its two different positions. The area of the source of light is:

A) $\sqrt{{{A}_{1}}{{A}_{2}}}$

B) $\frac{{{A}_{1}}+{{A}_{2}}}{2}$

C) $\frac{{{A}_{1}}-{{A}_{2}}}{2}$

D) $\frac{1}{{{A}_{1}}}+\frac{1}{{{A}_{2}}}$

• question_answer10) When the key K is pressed at time $t=0,$ then which of the following statement about the current I in the resistor AB of the given circuit is true? A) $I=1\,\,mA$all $t$

B) $I=2\,\,mA$at all $t$

C) $I$ oscillates between $I$ mA and 2 mA

D) at t = 0,1 = 2 mA and with time it goes to 1 mA

• question_answer11) The work done in turning a magnet of magnetic moment M by an angle of $90{}^\circ$ from the meridian, is n times the corresponding work done to turn it through an angle of$60{}^\circ$. The value of n is given by:

A) 2

B) 1

C) 1/2

D) 1/4

• question_answer12) A straight line conductor of length 0.4 m is moved with a speed of 7 m/s perpendicular to magnetic field of intensity 0.9$Wb\text{/}{{m}^{2}}.$ The induced e.m.f. across the conductor is:

A) 1.26 V

B) 2.52 V

C) 5.24 V

D) 25.2 V

• question_answer13) Two metallic spheres of radii 1 cm and 2 cm are given charges${{10}^{-2}}C$and$5\times {{10}^{-2}}\,C$respectively. If they are connected by a conducting wire, the final charge on the smaller sphere is:

A) $1\times {{10}^{-2}}C$

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

C) $3\times {{10}^{-2}}C$

D) $4\times {{10}^{-2}}C$

• question_answer14) A heating coil is labelled 100 W, 220 V. The coil is cut in half and the two pieces are joined in parallel to the same source. The energy now liberated per second is:

A) 25 J

B) 50 J

C) 200 J

D) 400 J

• question_answer15) Two wires of the same metal have same length, but their cross-sections are in the ratio 3:1. They are joined in series. The resistance of thicker wire is 10 $\Omega$. The total resistance of the combination will be:

A) 5/2 $\Omega$

B) 40/3 $\Omega$

C) 40 $\Omega$

D) 100 $\Omega$

• question_answer16) The focal length of converging lens is measured for violet, green and red colours. It is respectively ${{f}_{v}},{{f}_{g}},{{f}_{r}}.$ We will get:

A) ${{f}_{v}}={{f}_{g}}$

B) ${{f}_{g}}>{{f}_{r}}$

C) ${{f}_{v}}<{{f}_{r}}$

D) ${{f}_{g}}>{{f}_{r}}$

• question_answer17) If the length of a simple pendulum is increased by 2%, then the time period:

A) increases by 2%

B) decreases by 2%

C) increases by 1%

D) decreases by 1%

• question_answer18) The energy of the ground electronic state of hydrogen atom is -13.6 eV. The energy of the first excited state will be:

A) -3.4 eV

B) -6.8 eV

C) -27.2 eV

D) -52.4 eV

• question_answer19) The ball whose kinetic energy is E is thrown at an angle of $45{}^\circ$with the horizontal. Its K.E. at the highest point of its flight will be:

A) $E$

B) $\frac{E}{2}$

C) $\frac{E}{\sqrt{2}}$

D) $0$

• question_answer20) Which of the following statement is correct?

A) The current in photocell increases with increasing frequency

B) The photocurrent is proportional to the applied voltage

C) The photocurrent increases with intensity of light

D) The stopping potential increases with increase of incident light

• question_answer21) A straight wire of diameter 0.5 mm carrying a current of 1 A is replaced by another wire of 1 mm diameter carrying the same current. The strength of the magnetic field far away is:

A) twice the earlier value

B) one-half of the earlier value

C) one-quarter of the earlier value

D) no change

• question_answer22) The escape velocity of a body on the surface of the earth is 11.2 km/s. If the earths mass increases to twice its present value and radius of the earth becomes half, the escape velocity becomes:

A) 5.6 km/s

B) 11.2 km/s

C) 22.4 km/s

D) 44.8 km/s

• question_answer23) The following truth-table belongs to which one of the following four gates?

 A B Y 1 1 0 1 0 0 0 1 0 0 0 1

A) OR

B) NAND

C) XOR

D) NOR

• question_answer24) The current relationship between the two current gains $\alpha$ and $\beta$ in a transistor is:

A) $\beta =\frac{\alpha }{1+\alpha }$

B) $\beta =\frac{\alpha }{1-\alpha }$

C) $\alpha =\frac{\beta }{1+\beta }$

D) $\alpha =\frac{1+\beta }{\beta }$

• question_answer25) From the graph between current (I) and voltage (V) is shown below. Identify the portion corresponding to negative resistance. A) AB

B) BC

C) CD

D) DE

• question_answer26) A metal ball of mass 2 kg moving with speed of 36 km/h has a head on collision with a stationary ball of mass 3 kg. If after collision, both the balls move together, then the loss in K.E. due to collision is:

A) 40 J

B) 60 J

C) 100 J

D) 140 J

• question_answer27) Due to earths magnetic field, the charged cosmic rays particles:

A) require greater Kinetic energy to reach the equator than pole

B) require less kinetic energy to reach the equator than pole

C) can never reach the pole

D) can never reach the equator

• question_answer28) The primary winding of a transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an A.C. supply 20 V, 50 Hz. The secondary will have an output of:

A) 200 V, 50 Hz

B) 200 V, 500 Hz

C) 2 V, 50 Hz

D) 2 V, 5 Hz

• question_answer29) An electromagnetic radiation of frequency n wavelength $\lambda ,$ travelling with velocity v in air, enters a glass slab of refractive index$\mu .$ The frequency, wavelength and velocity of light in the glass slab will be respectively:

A) $\frac{n}{\mu },\frac{\lambda }{\mu }$ and $\frac{v}{\mu }$

B) $n,\,\frac{\lambda }{\mu }$ and $\frac{v}{\mu }$

C) $n,\,2\lambda$ and $\frac{v}{\mu }$

D) $\frac{2\mu }{\mu },\,\frac{\lambda }{\mu }$ and$v$

• question_answer30) The diode used in the circuit shown in the figure has a constant voltage drop at 0.5 V at all currents and a maximum power rating of 100 milli-watts. What should be the value of the resistor R, connected in series and with diode and obtaining maximum current? A) 5 $\Omega$

B) 5.6 $\Omega$

C) 6.76 $\Omega$

D) 20 $\Omega$

• question_answer31) What will be the equivalent resistance between the two points A and D? A) 10$\Omega$

B) 20$\Omega$

C) 30$\Omega$

D) 40$\Omega$

• question_answer32) The density of a cube is measured by measuring its mass and length of its sides. If the maximum error in the measurement of mass and lengths are 3% and 2% respectively, the maximum error in the measurement of density would be:

A) 7%

B) 9%

C) 12%

D) 14%

• question_answer33) A particle starts with S.H.M. from the mean position as shown in the Fig. below. Its amplitude is A and its time period is T. At one time, its speed is half that of the maximum speed. What is this displacement? A) $\frac{\sqrt{2A}}{3}$

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

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

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

• question_answer34) A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3 m/s. Another body of same mass dropped from the same height h with an initial velocity of 4 m/s. Find the final velocity of second mass, with which it strikes the group.

A) 3 m/s

B) 4 m/s

C) 5 m/s

D) 12 m/s

• question_answer35) A ball is dropped from a spacecraft revolving around the earth at a height of 120 km. What will happen to the ball?

A) It will continue to move with the same speed along the original orbit of spacecraft

B) It will move with the same speed, tangentially to the spacecraft

C) It will fall down to the earth gradually

D) It will go very far in the space

• question_answer36) The kinetic energy $({{E}_{k}})$ of a photoelectron varies with the frequency (v) of the incident radiation as which of the following graph?

A) B) C) D) • question_answer37) A nucleus ruptures into two nuclear parts, which have their velocity ratio equal to 2 : 1. What will be the ratio of their nuclear size (nuclear radius)?

A) ${{2}^{1/3}}:1$

B) $1:{{2}^{1/3}}$

C) ${{3}^{1/2}}:1$

D) $1:{{3}^{1/2}}$

• question_answer38) The value of critical temperature in terms of Van der Waals constant a and b is given by:

A) ${{T}_{C}}=\frac{a}{2Rb}$

B) ${{T}_{C}}=\frac{a}{27bR}$

C) ${{T}_{C}}=\frac{8a}{27Rb}$

D) ${{T}_{C}}=\frac{27a}{8Rb}$

• question_answer39) A diatomic gas initially at $18{}^\circ C$ is compressed adiabatically to one eighth of its original volume. The temperature after compression will be:

A) $18{}^\circ \,C$

B) $887.4{}^\circ \,C$

C) $395.4{}^\circ \,C$

D) $144{}^\circ \,C$

• question_answer40) A ray of light from a denser medium strikes a rare medium as shown in figure. The reflected and refracted rays make an angle of $90{}^\circ$ with each other. The angles of reflection and refraction are r and r. The critical angle would be: A) ${{\sin }^{-1}}(\tan \,r)$

B) ${{\tan }^{-1}}(sin\,i)$

C) ${{\sin }^{-1}}(\tan \,i)$

D) ${{\tan }^{-1}}(\sin \,r)$

• question_answer41) An electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum. Its final velocity will be:

A) $\frac{eV}{2m}$

B) $\frac{eV}{m}$

C) $\sqrt{\frac{2eV}{m}}$

D) $\sqrt{\frac{eV}{m}}$

• question_answer42) The magnetic field $dB$ due to a small current element$dl$at a distance$\vec{r}$and element carrying current$i$is:

A) $dB=\frac{{{\mu }_{0}}}{4\pi }i\left( \frac{dl\times \vec{r}}{r} \right)$

B) $dB=\frac{{{\mu }_{0}}}{4\pi }{{i}^{2}}\left( \frac{dl\times \vec{r}}{{{r}^{2}}} \right)$

C) $dB=\frac{{{\mu }_{0}}}{4\pi }{{i}^{2}}\left( \frac{dl\times \vec{r}}{r} \right)$

D) $dB=\frac{{{\mu }_{0}}}{4\pi }i\left( \frac{dl\times \vec{r}}{{{r}^{3}}} \right)$

• question_answer43) The energy of a hydrogen atom in its ground state is -13.6 eV. The energy of the level corresponding to the quantum number n = 2 in the hydrogen atom is:

A) -2.72 eV

B) -0.85 eV

C) -0.54 eV

D) -3.4 eV

• question_answer44) Light travels through a glass plate of thickness t and having a refractive index$\mu$. If c is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is:

A) $t\,\mu \,c$

B) $\frac{t\,c}{\mu }$

C) $\frac{t}{\mu \,c}$

D) $\frac{\mu \,t}{c}$

• question_answer45) The refractive index of water is 1.33 N. What will be the speed of light in water?

A) $3\times {{10}^{8}}\,m\text{/}s$

B) $2.25\times {{10}^{8}}\,m\text{/}s$

C) $4\times {{10}^{8}}\,m\text{/}s$

D) $1.33\times {{10}^{8}}\text{ }m\text{/}s$

• question_answer46) The transfer ratio P of a transistor is 50. The input resistance of the transistor, when used in the common emitter configuration is 1 k$\Omega$. The peak value of the collector ac current for an ac input voltage of 0.01 V peak is:

A) 100 mA

B) 250 mA

C) 500 mA

D) 800 mA

• question_answer47) A 5000 kg rocket is set for vertical firing. The exhaust speed is 800$m{{s}^{-1}}$. To give an initial upward acceleration of 20$m{{s}^{-2}},$ the amount of gas ejected per second to supply the needed thrust will be (g = 10 $m{{s}^{-2}}$):

A) 127.5 $kg\text{-}{{s}^{-1}}$

B) 137.5 $kg\text{-}{{s}^{-1}}$

C) 185.5 $kg\text{-}{{s}^{-1}}$

D) 187.5 $kg\text{-}{{s}^{-1}}$

• question_answer48) Complete the equation for the following fission process: ${}_{92}{{U}^{235}}+{}_{0}{{n}^{1}}\to {}_{38}S{{r}^{90}}+....$

A) ${}_{57}X{{e}^{142}}$

B) ${}_{54}X{{e}^{145}}$

C) ${}_{54}X{{e}^{143}}+3{}_{0}{{n}^{1}}$

D) ${}_{54}X{{e}^{141}}+{}_{0}{{n}^{1}}$

• question_answer49) The cause of the potential barrier in a p-n junction diode is:

A) depletion of positive charges near the junction

B) concentration of positive charges near the junction

C) depletion of negative charges near the junction

D) concentration of positive and negative charges near the junction

• question_answer50) A mass 1 kg is suspended by a thread. It is (i) lifted up with an acceleration $4.9\,m/{{s}^{2}},$ (ii) lowered with an acceleration $4.9\,m/{{s}^{2}}$. The ratio of the tensions is:

A) 3 : 1

B) 1 : 3

C) 1 : 2

D) 2 : 1

• question_answer51) The speed of a boat is 5 km/h in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water is:

A) 1 km/h

B) 3 km/h

C) 4 km/h

D) 5 km/h

• question_answer52) A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity co. Two objects each of mass m are attached gently to the opposite ends of a diameter of the ring. The ring will now rotate with an angular velocity of:

A) $\frac{\omega \,(M-2m)}{(M+2m)}$

B) $\frac{\omega M}{(M+2m)}$

C) $\frac{\omega M}{(M+m)}$

D) $\frac{\omega (M+2m)}{M}$

• question_answer53) A rubber ball is dropped from a height of 5m on a planet where the acceleration due gravity is not known. On bouncing, it rises 1.8 m. The ball loses its velocity on bouncing by a factor of:

A) $\frac{2}{5}$

B) $\frac{3}{5}$

C) $\frac{9}{25}$

D) $\frac{16}{25}$

• question_answer54) The radiant energy from the sun, incident normally at the surface of earth, is $20\,kcal\text{/}{{m}^{2}}\text{-}\min .$ What would have been the radiant energy incident normally on the earth, if the sun had a temperature twice of the present one?

A) $40\,kcal\text{/(}{{m}^{2}}\text{-}\min )$

B) $80\,kcal\text{/(}{{m}^{2}}\text{-}\min )$

C) $160\,kcal\text{/(}{{m}^{2}}\text{-}\min )$

D) $320\,kcal\text{/(}{{m}^{2}}\text{-}\min )$

• question_answer55) A vehicle, with a horn of frequency n is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+{{n}_{1}}.$ Then ${{n}_{1}}$ is equal to (if the sound velocity in air is 300 m/s):

A) ${{n}_{1}}=10\,n$

B) ${{n}_{1}}=0$

C) ${{n}_{1}}=0.1\,n$

D) ${{n}_{1}}=n$

• question_answer56) In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.17 sec The frequency of the wave is:

A) 1.47 Hz

B) 0.36 Hz

C) 6.73 Hz

D) 2.94 Hz

• question_answer57) A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance of 1.21$\overset{\text{o}}{\mathop{\text{A}}}\,$between them. The wavelength of the standing wave is:

A) 1.21 $\overset{\text{o}}{\mathop{\text{A}}}\,$

B) 2.42 $\overset{\text{o}}{\mathop{\text{A}}}\,$

C) 3.63 $\overset{\text{o}}{\mathop{\text{A}}}\,$

D) 6.05 $\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer58) Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to equation $I={{I}_{0}}$is $\sin \omega t$where $I=10A$and $\omega =100\pi$radian/sec. The maximum value of e.m.f. in the second coil is:

A) $2\pi$

B) $5\pi$

C) $6\pi$

D) $12\pi$

• question_answer59) A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is:

A) $qE{{y}^{2}}$

B) $q{{E}^{2}}y$

C) $qEy$

D) ${{q}^{2}}Ey$

• question_answer60) A step-up transformer operates on a 230 V line and supplies a load of 2A. The ratio of the primary and secondary windings is 1 : 25. The current in the primary is:

A) 15 A

B) 50 A

C) 75 A

D) 125 A

• question_answer61) If a compound, on analysis was found to contain C = 18.5%, H = 1.55%, Cl = 55.04% and O = 24.81%, then its empirical formula is:

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

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

C) $CHClO$

D) $ClC{{H}_{2}}O$

• question_answer62) Percentage of Se (at. Mass = 78.4) in peroxidase anhydrase enzyme is 0.5% by weight, then minimum molecular mass of peroxidase anhydrase enzyme is:

A) $1.576\times {{10}^{4}}$

B) $1.576\times {{10}^{3}}$

C) $15.76$

D) $2.136\times {{10}^{4}}$

• question_answer63) 2.5 g of the carbonate of a metal was treated with 100 ml of$1\,N$${{H}_{2}}S{{O}_{4}}$. After the completion of the reaction, the solution was boiled off to expel $C{{O}_{2}}$ and was then titrated against $1\,N$$NaOH$solution. The volume of alkali that would be consumed, if the equivalent weight of the metal is 20.

A) 50

B) 25

C) 75

D) 100

• question_answer64) A radioactive nuclide decays at such a rate that after 96 min, only 1/8th of the original amount remains. The value of half-life of the nuclide is:

A) 32 min

B) 12 min

C) 48 min

D) 24 min

• question_answer65) Assume that you are travelling at a speed of 90 km/h in a small car with a mass of 105 kg. If the uncertainty in the velocity of the car is 1% ($\Delta v$=0.9 km/h), what is the uncertainty (in meters) in the position of the car?

A) $\Delta x\ge 1\,\,\times \,\,{{10}^{-35}}m$

B) $\Delta x\ge 2\,\,\times \,\,{{10}^{-37}}m$

C) $\Delta x\ge 2\,\,\times \,\,{{10}^{-36}}m$

D) $\Delta x\ge 4\,\,\times \,\,{{10}^{-38}}m$

• question_answer66) The pair of amphoteric hydroxides is:

A) $Al{{(OH)}_{3}},LiOH$

B) $Be{{(OH)}_{2}},\,Mg{{(OH)}_{2}}$

C) $B{{(OH)}_{3}},\,Be{{(OH)}_{2}}$

D) $Be{{(OH)}_{2}},\,Zn{{(OH)}_{2}}$

• question_answer67) The correct order of dipole moment is:

A) $C{{H}_{4}}<N{{F}_{3}}<N{{H}_{3}}<{{H}_{2}}O$

B) $N{{F}_{3}}<C{{H}_{4}}<N{{H}_{3}}<{{H}_{2}}O$

C) $N{{H}_{3}}<N{{F}_{3}}<C{{H}_{4}}<{{H}_{2}}O$

D) ${{H}_{2}}O<N{{H}_{3}}<N{{F}_{3}}<C{{H}_{4}}$

• question_answer68) In ${{[Ag{{(CN)}_{2}}]}^{-}}$, the number of n bonds is:

A) 2

B) 3

C) 4

D) 6

• question_answer69) The temperature, at which the density of${{O}_{2}}$at 1 atm, is the same as that of $C{{H}_{4}}$ at S.T.P., is:

A) $273{}^\circ C$

B) $100{}^\circ C$

C) $546{}^\circ C$

D) $150{}^\circ C$

• question_answer70) Critical temperatures for A, B, C and D gases are $25{}^\circ C,$$10{}^\circ C,$$-80{}^\circ C$and$15{}^\circ C$respectively. Which gas will be liquefied more easily?

A) A

B) B

C) C

D) D

• question_answer71) Two flasks X and Y have capacity 1L and 2L respectively and each of them contains 1 mole of a gas. The temperatures of the flasks are so adjusted that average speed of molecules in X is twice as those in Y. The pressure in flask X would be:

A) same as that in Y

B) half of that in Y

C) twice of that in Y

D) 8 times of that in Y

• question_answer72) The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calorimeter at $25{}^\circ C$ and it increases the temperature of 18.94 kg of water by$~0.632{}^\circ C$. If the specific heat of water at $25{}^\circ C$ is 0.998 cal/g-deg, the value of the heat of combustion of benzoic acid is:

A) 881.1 kcal

B) 771.124 kcal

C) 981.1 kcal

D) 871.2 kcal

• question_answer73) If enthalpies of formation for ${{C}_{2}}{{H}_{4(g)}},C{{O}_{2(g)}}$and ${{H}_{2}}O(l)$ at $25{}^\circ C$ and 1 atm pressure are 52, -394 and -286 kJ/mol respectively, then enthalpy of combustion of ${{C}_{2}}{{H}_{4}}(g)$will be:

A) -141.2 kJ/mol

B) +14.2 kJ/mol

C) +141.2 kJ/mol

D) -1412 kJ/mol

• question_answer74) One gram sample of $N{{H}_{4}}N{{O}_{3}}$ is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.12 K. The heat capacity of the system is 1.23 kJ/g/deg. What is the molar heat of decomposition for$N{{H}_{4}}N{{O}_{3}}$?

A) -7.53 kJ/mol

B) -398.1 kJ/mol

C) -16.1 kJ/mol

D) -602 kJ/mol

• question_answer75) Ostwalds dilution law is applicable only to:

A) strong electrolytes

B) solute

C) weak electrolytes

D) solvent

• question_answer76) Of the following which change will shift the reaction towards the product? ${{I}_{2}}(g)\rightleftharpoons 2I(g),$$\Delta H_{r}^{\text{o}}(298\,K)=+150\,kJ$

A) Increase in concentration of $I$

B) Decrease in concentration of ${{I}_{2}}$

C) Increase in temperature

D) Increase in total pressure

• question_answer77) Which of the following is not a characteristics of equilibrium?

A) Rate is equal in both directions.

B) Measurable quantities are constant at equilibrium.

C) Equilibrium occurs in reversible condition.

D) Equilibrium occurs only in open vessel at constant temperature.

• question_answer78) In the reaction : $4Fe+3{{O}_{2}}\rightleftharpoons 4F{{e}^{3+}}+6{{O}^{2-}}$ which of the following statement is incorrect?

A) Metallic iron is a reducing agent

B) $F{{e}^{3+}}$is an oxidizing agent

C) It is a redox reaction

D) Metallic iron is reduced to $F{{e}^{3+}}$

• question_answer79) The pair whose both species are used in and acid medicinal preparation is:

A) $NaHC{{O}_{3}}$ and $Mg{{(OH)}_{2}}$

B) $N{{a}_{2}}C{{O}_{3}}$ and $Ca{{(HC{{O}_{3}})}_{2}}$

C) $Ca{{(HC{{O}_{3}})}_{2}}$ and $Mg{{(OH)}_{2}}$

D) $Ca{{(OH)}_{2}}$ and $NaHC{{O}_{3}}$

• question_answer80) Which of the following is an alum?

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

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

C) $N{{a}_{2}}S{{O}_{4}}.Al{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O$

D) $KCl.MgC{{l}_{2}}.6{{H}_{2}}O.$

• question_answer81) Which of the following compounds will be most easily attacked by an electrophile?

A) B) C) D) • question_answer82) Correct configuration of the following is: A) 1S, 2S

B) 1S, 2R

C) 1R, 2S

D) 1R, 2R

• question_answer83) Consider the reaction The correct explanation is:

A) The product is formed due to nucleophilic substitution

B) The product is formed according to Saytzeffs rule

C) Conjugated double bond product is formed due to higher stability because of resonance stabilization

D) ${{(C{{H}_{3}})}_{3}}C{{O}^{-}}$is a better leaving group

• question_answer84) In solvents like DMSO, acetonitrile, ${{F}^{-}}$ion of dissolved$NaF$is more reactive than in methyl alcohol. Explain.

A) $C{{H}_{3}}OH$ is more polar than DMSO and $C{{H}_{3}}CN$

B) $C{{H}_{3}}OH$ is less polar than DMSO and $C{{H}_{3}}CN$

C) unsolvated ${{F}^{-}}$ion is DMSO or $C{{H}_{3}}CN$ acts more efficiently as nucleophile

D) $-OH$group is a better leaving group than ${{F}^{-}}$ion

• question_answer85) Identify the final product. s

A) B) C) D) None of these

• question_answer86) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains:

A) mixture of o- and m-bromotoluenes

B) mixture of o- and p-bromotoluenes

C) mixture of o- and p-dibromobenzenes

D) mixture of o- and p-bromo anilines.

• question_answer87) The energy gaps $({{E}_{g}})$ between valence band and conduction band for diamond, silicon and germanium are in the order:

A) ${{E}_{g}}$(diamond) >${{E}_{g}}$(silicon)>${{E}_{g}}$(germanium)

B) ${{E}_{g}}$(diamond) <${{E}_{g}}$(silicon)<${{E}_{g}}$(germanium)

C) ${{E}_{g}}$ (diamond)=${{E}_{g}}$(silicon)=${{E}_{g}}$(germanium)

D) ${{E}_{g}}$(diamond) >${{E}_{g}}$(germanium)>${{E}_{g}}$(silicon)

• question_answer88) Which one of the following statements given below regarding properties of solutions, describes a colligative effect?

A) Boiling point of pure water decreases by the addition of ethanol

B) Vapour pressure of pure water decreases by the addition of nitric acid

C) Vapour pressure of pure benzene decreases by the addition of naphthalene.

D) Boiling point of pure benzene increases by the addition of toluene.

• question_answer89) Vapour pressure of benzene at $30{}^\circ C$ is 121.8 mm when 15 g of a non-volatile solute is dissolved in 250 g of benzene, its vapour pressure is decreased to 120.2 mm. The molecular weight of the solute is:

A) 35.67 g

B) 356.7 g

C) 432.8 g

D) 502.7 g

• question_answer90) For a dilute solution, Raoults law states that:

A) The relative lowering of vapour pressure is proportional to the amount of solute in solution.

B) The relative lowering of vapour pressure is equal to the mole fraction of solute.

C) The lowering of vapour pressure is equal to the mole fraction of the solute.

D) The vapour pressure of the solution is equal to the mole fraction of the solvent.

• question_answer91) Which of the following is true for an ideal solution?

A) $\Delta {{H}_{(mix)}}=0$

B) $\Delta {{S}_{(mix)}}=0$

C) $\Delta {{G}_{(mix)}}=0$

D) None of these

• question_answer92) Which of the following is not true about e.m.f. of a cell?

A) Work calculated from it is not the maximum work obtainable from the cell.

B) It is maximum voltage obtainable from the cell.

C) It is the potential difference between two electrodes when no current is flowing in circuit.

D) It is responsible for the flow of steady current in the cell.

• question_answer93) Which of the following statement is true for the electrochemical Daniel cell?

A) Electrons flow from copper electrode to zinc electrode.

B) Current flows from zinc electrode to copper electrode.

C) Cations move towards copper electrode.

D) Cations move towards zinc electrode.

• question_answer94) The potential energy diagram for a reaction $R\to P$is given in the figure. $\Delta H{}^\circ$of the reaction corresponds to the energy: A) a

B) b

C) c

D) a + b

• question_answer95) For a reaction,$r=k{{(C{{H}_{3}}COC{{H}_{3}})}^{3/2}}$ then unit of rate of reaction and rate constant respectively is:

A) $mol\,{{L}^{-1}}{{s}^{-1}},$ $mo{{l}^{-1/2}}\,{{L}^{1/2}}{{s}^{-1}}$

B) $mo{{l}^{-1}}\,{{L}^{-1}}{{s}^{-1}},$ $mo{{l}^{-1/2}}\,{{L}^{-1/2}}{{s}^{-1}}$

C) $mol\,{{L}^{-1}}{{s}^{-1}},$ $mo{{l}^{+1/2}}\,{{L}^{1/2}}{{s}^{-1}}$

D) $mol\,L\,\,s,$ $mo{{l}^{+1/2}}\,{{L}^{1/2}}s$

• question_answer96) Correct equation of Freundlich isotherm is:

A) $\log \left( \frac{x}{m} \right)=\log K+\frac{1}{n}\log C$

B) $\log \left( \frac{m}{x} \right)=\log K+\frac{1}{n}\log C$

C) $\log \left( \frac{x}{m} \right)=\log C+\frac{1}{K}\log C$

D) $\log \left( \frac{x}{m} \right)=\log C+\frac{1}{n}\log K$

• question_answer97) The composition of carnalite is:

A) $KCl\cdot MgC{{l}_{2}}\cdot 6{{H}_{2}}O$

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

C) $F{{e}_{3}}{{O}_{4}}$

D) $N{{a}_{3}}Al{{F}_{6}}$

• question_answer98) The radii of $F,{{F}^{-}},\,O$ and ${{O}^{-2}}$ are in the order of:

A) ${{O}^{2-}}>O>{{F}^{-}}>F$

B) ${{F}^{-}}>{{O}^{2-}}>F>O$

C) ${{O}^{2-}}>{{F}^{-}}>F>O$

D) ${{O}^{2-}}>{{F}^{-}}>O>F$

• question_answer99) The $As{{F}_{5}}$ molecule is trigonal pyramidal. The hybrid orbitals used by the As atoms for bonding are:

A) ${{d}_{{{x}^{2}}-{{y}^{2}}}},{{d}_{{{z}^{2}}}},s,{{p}_{x}},{{p}_{y}}$

B) ${{d}_{xy}},s,{{p}_{x}},{{p}_{y}},{{p}_{z}}$

C) $s,{{p}_{x}},{{p}_{y}},{{p}_{z}},{{d}_{{{z}^{2}}}}$

D) ${{d}_{{{x}^{2}}-{{y}^{2}}}},s,{{p}_{x}},{{p}_{y}},{{p}_{z}}$

• question_answer100) On dissolving moderate amount of sodium metal in liquid$N{{H}_{3}}$at low temperature, which one of the following does not occur?

A) Blue coloured solution is obtained

B) $N{{a}^{+}}$ions are formed in the solution.

C) Liquid $N{{H}_{3}}$ becomes good conductor of electricity.

D) Liquid ammonia remains diamagnetic

• question_answer101) What is the correct relationship between the pHs of isomolar solutions of sodium oxide$(p{{H}_{1}}),$sodium sulphide$(p{{H}_{2}}),$sodium selenide$(p{{H}_{3}})$ and sodium telluride$(p{{H}_{4}})$?

A) $p{{H}_{1}}>p{{H}_{2}}=p{{H}_{3}}=p{{H}_{4}}$

B) $p{{H}_{1}}<p{{H}_{2}}<p{{H}_{3}}<p{{H}_{4}}$

C) $p{{H}_{1}}<p{{H}_{2}}>p{{H}_{3}}<p{{H}_{4}}$

D) $p{{H}_{1}}>p{{H}_{2}}>p{{H}_{3}}>p{{H}_{4}}$

• question_answer102) Bromine is added to cold dilute aqueous solution of$NaOH$. The mixture is boiled which of the following statements is not true?

A) During the reaction bromine is present in four different oxidation states.

B) The greatest difference between the various oxidation states of bromine is 5.

C) On acidification of the final mixture bromine is formed.

D) Disproportionation of bromine occurs during the reaction.

• question_answer103) Which of the following statement is not true for hydrolysis of$Xe{{F}_{6}}$?

A) $XeO{{F}_{4}}$ is formed

B) $Xe{{O}_{2}}{{F}_{2}}$ is formed

C) It is a redox reaction

D) $Xe{{O}_{3}}$is formed

• question_answer104) When calomel is treated with ammonium hydroxide, a black substance is formed) The black substance is:

A) $Hg+HgO$

B) $HgO\cdot HgC{{l}_{2}}$

C) ${{H}_{2}}N-Ng-Cl+Hg$

D) $Hg{{(N{{H}_{2}})}_{2}}+HgO$

• question_answer105) Which is not stable under ambient condition?

A) $Ti{{O}_{2}},T{{i}^{+4}}$

B) $VO,\,{{V}^{+4}}$

C) $V{{O}_{2}},\,{{V}^{+5}}$

D) $C{{u}_{2}}O,C{{u}^{+2}}$

• question_answer106) In the formation of ${{[Ni{{(CN)}_{4}}]}^{2-}},$the type of hybridisation involved is:

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

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

C) $ds{{p}^{2}}$

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

• question_answer107) The pair in which both species have same magnetic moment (spin only value) is:

A) ${{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}},{{[CoC{{l}_{4}}]}^{2-}}$

B) ${{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}},{{[Fe{{({{H}_{2}}O)}_{6}}]}^{2+}}$

C) ${{[Mn{{({{H}_{2}}O)}_{6}}]}^{2+}},{{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}$

D) ${{[CoC{{l}_{4}}]}^{2-}},{{[Fe{{({{H}_{2}}O)}_{6}}]}^{2+}}$

• question_answer108) A complex $PtC{{l}_{4}}.5N{{H}_{3}}$ shows a molar conductance of $402\,oh{{m}^{-1}}\,c{{m}^{2}}\,mo{{l}^{-1}}$ in water and precipitates three moles of $AgCl$ with $AgN{{O}_{3}}$ solution. The formula of the complex is:

A) $[Pt{{(N{{H}_{3}})}_{6}}]C{{l}_{4}}$

B) $[Pt{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]C{{l}_{2}}$

C) $[Pt{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{3}}$

D) $[Pt{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\,Cl$

• question_answer109) The correct increasing order of the reactivity of halides for${{S}_{N}}1$reaction is:

A) $C{{H}_{3}}-C{{H}_{2}}-X<{{(C{{H}_{3}})}_{2}}CH-X<C{{H}_{2}}$ $=CH-C{{H}_{2}}-X<PhC{{H}_{2}}-X$

B) ${{(C{{H}_{3}})}_{2}}CH-X<C{{H}_{3}}-C{{H}_{2}}-X<C{{H}_{2}}$ $=CH-C{{H}_{2}}-X<PhC{{H}_{2}}-X$

C) $PhC{{H}_{2}}-X<{{(C{{H}_{3}})}_{2}}CH-X<C{{H}_{3}}$ $-C{{H}_{2}}-X<C{{H}_{2}}=CH-C{{H}_{2}}-X$

D) $C{{H}_{3}}=CH-C{{H}_{2}}-X<Ph-C{{H}_{2}}-X<$ ${{(C{{H}_{3}})}_{2}}CH-X<C{{H}_{3}}-C{{H}_{2}}-X$

• question_answer110) Identify Z in the reaction. A) B) C) D) • question_answer111) The major product of the following reaction is: A) B) C) D) • question_answer112) The following sequence of reactions on A gives: A) B) C) D) • question_answer113) The strongest base among the following is:

A) B) C) D) • question_answer114) Which of the following amines can give N-nitrosoamine on treatment with$HN{{O}_{2}}$?

A) B) $C{{H}_{3}}-\underset{N{{H}_{2}}}{\mathop{\underset{\mathbf{|}}{\mathop{CH}}\,}}\,-C{{H}_{3}}$

C) D) • question_answer115) Find the hydrolysis product when a phosphodiester bond of nucleotide breaks.

A) 3-OH-deoxyribose-5-$PO_{4}^{3-}$

B) 5-OH-deoxyribose-3-$PO_{4}^{3-}$

C) 2-OH-deoxyribose-2-$PO_{4}^{3-}$

D) 4-OH-deoxyribose-2-$PO_{4}^{3-}$

• question_answer116) The chemical name for melamine is:

A) 1, 3, 5-Triamino-2, 4, 6-triazine

B) 2, 4, 6-Triamino-1, 3, 5-triazine

C) 2-Amino-1, 3, 5-triazinfe

D) 2, 4-Diamino-1, 3, 5-triazine

• question_answer117) Methyl orange is the example of which type of dye?

A) Acid dye

B) Mordant dye

C) Azo dye

D) Both (a) and (c)

• question_answer118) Which of the following is formed, when benzaldehyde reacts with alcoholic KCN?

A) Benzoin

B) Benzyl alcohol

C) Benzoin acid

D) Ethyl benzoate

• question_answer119) The compound most suitable for the preparation of cyanohydrin is:

A) ${{C}_{2}}{{H}_{5}}COOH$

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

C) ${{C}_{2}}{{H}_{5}}CO{{C}_{2}}{{H}_{5}}$

D) ${{C}_{2}}{{H}_{5}}-{{C}_{2}}{{H}_{5}}$

• question_answer120) Which one of the following statements is true for protein synthesis (translation)?

A) Amino acids are directly recognized by m-RNA

B) The third base of the codon is less specific

C) Only one codon codes for an amino acid

D) Every t-RNA molecule has more than one amino acid attachment.

• question_answer121) Genera Plantarum was written by:

A) Hutchinson

B) Bessey

C) Bentham and Hooker

D) Linnaeus

• question_answer122) Match the following columns and select the correct option.

 Column-I Column-II (A) Panthera tigris 1. Mango (B) Maiigifera indica 2. Common Indian frog (c) Musca domestica 3. Cockroach (D) Periplaiieta americana 4. Tiger (E) Rana tigerlna 5. House fly
Code:

A) A-2 B-5 C-1 D-3 E-4

B) A-4 B-1 C-5 D-3 E-2

C) A-2 B-5 C-3 D-1 E-4

D) A-4 B-1 C-5 D-2 E-3

• question_answer123) Ordines Anomali of Bentham and Hooker includes:

A) seed plants showing abnormal forms of growth and development

B) plants described only in fossil state

C) plants described in the literature but which Bentham and Hooker did not see in original

D) a few orders which could not be placed satisfactorily in the classification

• question_answer124) Which of the following is correctly matched without exception in regard to plant classification?

A) Family - Poaceae - ae

B) Division - Pteridophyta - phyta

C) Class - Bryopsida - sida

D) Genus - Solarium - um

• question_answer125) Which one of the following categories of organisms do not evolve oxygen during photosynthesis?

A) Red algae

B) Photosynthetic bacteria

C) ${{C}_{4}}$plants with Kranz anatomy

D) Blue green algae

• question_answer126) In prokaryotes, chromatophores are:

A) specialized granules responsible for colouration of cells

B) structures responsible for organizing the shape of the organism

C) inclusion bodies lying free inside the cells for carrying out various metabolic activities

D) internal membrane systems that may become extensive and complex in photo-synthetic bacteria

• question_answer127) By all of the following ways bacteria become resistant to antibiotic except:

A) making enzymes that inactivate the drug

B) becoming impermeable to the drug

C) modifying the target of the drug

D) moving away from the drug

• question_answer128) Which of the following is not correctly matched?

A) Root knot disease-Meloidogyne javanica

B) Smut of bajra-Tolysporium penicillariae

C) Covered smut of barley-Ustilago mula

D) Late blight of potato-Phytophthora infestans

• question_answer129) Which of the following is not a correct match?

A) Aflaitoxin-Aspergillus parasiticus

B) Bengal famine-Helminthosporium

C) Red rust of tea-Melampsora

D) Tikka disease of groundnut-Cercospora

• question_answer130) Mosses and ferns are found in moist and shady places because both:

A) require presence of water for fertilization

B) do not need sunlight for photosynthesis

C) depend for their nutrition on micro- organisms which can survive only at low temperature

D) cannot compete with sun-loving plants.

• question_answer131) Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms.

A) perianth and two integuments.

B) embryo development and apical meristem.

C) absence of resin duct and leaf venation.

D) presence of vessel elements and absence of archegonia.

• question_answer132) Which statement is correct regarding mosses?

A) They have dominant and independent sporophyte.

B) Their antherozoids require water for fertilization.

C) Their archegonia produce many eggs.

D) Their antherozoids are multiflagellated

• question_answer133) Three of the following statements regarding cell organelles are correct while one is wrong. Which one is wrong?

A) Lysosomes are single membraned vesicles budded off from golgi apparatus and contain digestive enzymes.

B) Endoplasmic reticulum consists of a network of membranous tubules and helps in transport, synthesis and secretion.

C) Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesizing machinery.

D) Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids.

• question_answer134) In nucleoplasm, a conspicuous body of spherical shape attached to a particular chromosome on a definite position is called:

A) plasmid

B) karyolymph

C) nucleolus

D) nuclear reticulum

• question_answer135) Which of the following organelles contain DNA? (i) Mitochondria (ii) Chloroplasts (iii) Golgi bodies (iv) Ribosomes

A) (i) and (ii)

B) (ii) and (iii)

C) (i) only

D) (iv) only

• question_answer136) What are Singer and Nicolson known for?

A) One-gene-one-enzyme hypothesis

B) Plasma membrane modifications

C) Fluid-mosaic model of plasma membrane

D) Structure of DNA

• question_answer137) Which of the following is not a characteristic of meiosis?

A) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II.

B) It involves recombination and crossing over.

C) Sister chromatids separate during ana-phase-II.

D) Nuclear membrane disappears during prophase.

• question_answer138) Microtubule depolymerizing drug such as colchicine is expected to:

A) inhibit spindle formation during mitosis

B) inhibit cytokinesis

C) allow mitosis beyond metaphase

D) induce formation of multiple contractile rings.

• question_answer139) Which of the following statements is incorrect about${{G}_{0}}$phase?

A) Mitosis occurs after ${{G}_{0}}$ phase.

B) Biocatalysts can be used to exit ${{G}_{0}}$ phase.

C) Cell volume keeps on increasing during this phase.

D) Cell metabolism occurs continuously in ${{G}_{0}}$ phase.

• question_answer140) In respiration from 180 g of glucose which of the following is formed?

A) 264 gm $C{{O}_{2}}$ + 190 gm ${{H}_{2}}O$ + 391 Kcal

B) 264 gm $C{{O}_{2}}$ + 108 gm ${{H}_{2}}O$ + 686 Kcal

C) 390 gm $C{{O}_{2}}$ + 108 gm ${{H}_{2}}O$ + 686 Kcal

D) 390 gm $C{{O}_{2}}$ + 264 gm ${{H}_{2}}O$ + 391 Kcal

• question_answer141) Which of the following is true regarding the given electron transport chain? $CoQ\to Cyt\,c\to Cyt\,a{{a}_{_{3}}}\to {{O}_{2}}$

A) $CoQ\to Cyt\,\,c$ is ${{H}^{+}}$absorbing site

B) $a{{a}_{3}}\to {{O}_{2}},$${{H}^{+}}$yielding site

C) $CoQ\to Cyt\,\,c$ is ${{H}^{+}}$yielding site and $a{{a}_{3}}\to {{O}_{2}}$ is ${{H}^{+}}$absorbing site

D) no ${{H}^{+}}$is absorbed or released

• question_answer142) Which of the following statements is incorrect regarding fermentation?

A) Propionibacterium is used to ferment the cheese.

B) The puffed-up appearance of dough is due to the production of $C{{O}_{2}}$ gas.

C) Fermentation in muscle produces ethanol

D) Toddy is made by fermenting sap from palms.

• question_answer143) The figure given below shows three velocity- substrate concentration curves for an enzyme reaction. What do the curves x, y, and z depict respectively? A) x-normal enzyme reaction, y-competitive inhibition, z-non-competitive inhibition

B) x-enzyme with an allosteric modulator added, y-normal enzyme activity, z-competitive inhibition

C) x-enzyme with an allosteric stimulator, y-competitive inhibition added, z-normal enzyme reaction

D) x-normal enzyme reaction, y-non-competitive inhibitor added, z-allosteric inhibitor added

• question_answer144) From the following groups, select the one which has only secondary metabolites?

A) Arbrin, cellulose, arginine, tyrosine

B) Glycine, gums, serine, diterpenes

C) Carotenoids, phenylalanine, curcumin, rubber

D) Conclavin-A, morphine, codeine, vinblastine

• question_answer145) There is an irregular mating population. If the frequency of an autosomal recessive lethal gene is 0.4, then the frequency of the carriers in a population of 200 individuals is:

A) 96

B) 36

C) 104

D) 72

• question_answer146) When a tall and red flowered individual is crossed with a dwarf and white flowered individual, phenotype in the progeny is dwarf and white. What will be the genotype of tall and red flowered individual?

A) TtRr

B) TTRR

C) TTRr

D) TtRR

• question_answer147) The epistatic effect, in which the dihybrid cross 9 : 3 : 3 : 1 between Aa Bb x Aa bb is modified as:

A) dominance of one allele on another allele of both loci.

B) interaction between two alleles of different loci.

C) dominance of one allele on another allele of same loci.

D) interaction between two alleles of same loci.

• question_answer148) XO-chromosomal abnormality in human beings causes:

A) Turners syndrome

B) Downs syndrome

C) Klinefelters syndrome

D) None of these

• question_answer149) Mendel was not able to say anything about recombination and crossing over because:

A) he did not have a large and strong microscope

B) he chose only pure type

C) traits he chose, were not linked and present on different chromosomes or were far apart

D) traits he chose had no genes

• question_answer150) Which of the following is true for a recessive disease in family A and B? A) In family A, both the parents are homo- zygous recessive.

B) In family B, both the parents are homo-zygous dominant.

C) In family B, both the parents are heter-ozygous recessive.

D) In family A, both the parents are hetero-zygous recessive.

• question_answer151) The new strand synthesised, in small pieces and then joined together during DNA replication, is called:

B) lagging strand

D) All of these

• question_answer152) If one strand of DNA has the nitrogenous base sequence ATGCTTGA, the sequence in the complementary strand will be:

A) TAGGTAGT

B) TACGTACT

C) TACGAACT

D) TCCGAACT

• question_answer153) The binding site of $tRNA$ with $mRNA$ & amino acids respectively are:

A) $mRNA$ with DHU loop & amino acid with CCA end

B) $mRNA$ with CCA end & amino acid with anticodon loop

C) $mRNA$ with anticodon loop & amino acid with DHU loop

D) $mRNA$ with anticodon loop & amino acid with CCA end

• question_answer154) Which of the following is correct regarding genetic code?

A) UUU is the initiation codon which also codes for phenylalanine.

B) There are 64 triplet codons and only 20 amino acids.

C) Three random nitrogen bases specify the placement of one amino acids

D) UAA is the nonsense codon which also codes for methionine.

• question_answer155) Cork cambium results in the formation of cork which becomes impermeable to water due to the accumulation of:

A) resin

B) suberin

C) lignin

D) tannin

• question_answer156) Which one of the following statements pertaining to plant structure is correct?

A) Cork lacks stomata, but lenticels carry out transpiration.

B) Passage cells help in transfer of food from cortex to phloem.

C) Sieve tube elements possess cytoplasm but no nuclei.

D) The shoot apical meristem has a quiescent centre.

• question_answer157) Which of the following is true?

A) Umbel is a racemose inflorescence where all stalked flower aggregate on the flat receptacle

B) Raceme is a racemose inflorescence having main axis shortened & flower born acropetally

C) Spadix is a racemose inflorescence having pendulous spike with main axis much flattened

D) Spike is a racemose inflorescence having sessile flowers

• question_answer158) Which floral family has (9) + 1 arrangement of anthers in the androecium?

A) Malvaceae

B) Rutaceae

C) Fabaceae

D) Caesalpinaceae

• question_answer159) Which of the following statements are correct regarding short day plants (SDPs)?

A) They are apt to flower in the fall

B) They are the same as long as long day plants

C) They do not have a critical photoperiod

D) All of the above are correct

• question_answer160) Carbon dioxide is necessary for photo- synthesis. The chemical used to remove this gas most effectively from entering a control apparatus is:

A) calcium oxide

B) distilled water

C) potassium hydroxide solution

D) sodium carbonate

• question_answer161) The function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to:

A) convert atmospheric ${{N}_{2}}$ to $N{{H}_{3}}$

B) convert ammonia to nitrite

C) transport oxygen for activity of nitrogenase

D) protect nitrogenase from oxygen

• question_answer162) What is correct about the movement of substance across the membrane in facilitated diffusion?

A) It is an active transport

B) It doesnt cause transport of molecules from low concentration to high concentration

C) It is insensitive to inhibitors

D) It is a very specific transport

• question_answer163) Which of the following statements is correct?

A) Photorespiration is useful process.

B) ${{C}_{4}}$plants are more efficient than${{C}_{3}}$plants.

C) ${{C}_{3}}$plants are more efficient than${{C}_{4}}$plants.

D) Photorespiration is absent in${{C}_{3}}$plants but present in${{C}_{4}}$plants.

• question_answer164) In active transport, carrier proteins are used, which use energy in the form of ATP, to:

A) transport molecules against concentration gradient of cell wall.

B) transport molecules along concentration gradient of cell membrane.

C) transport molecules against concentration gradient of cell membrane.

D) transport molecules along concentration gradient of cell wall.

• question_answer165) Which one of the following methods is commonly used to maintain the genetic traits of a given plant?

A) By propagating through seed germination.

B) By propagating through vegetative multi- plication.

C) By generating hybrids through intergeneric pollination.

D) By treating the seeds with gamma radiations.

• question_answer166) Which one of the following pairs of plant structures has haploid number of chromosomes?

A) Nuceleus and antipodal cells.

B) Egg nucleus and secondary nucleus

C) Megaspore mother cell and antipodal cells.

D) Egg cell and antipodal cells.

• question_answer167) Which of the following is correct about nematocyst?

A) It can be re-used

B) Its ejection is conditioned reflex

C) It is ejected on contact and pierce the prey

D) Due to which other Hydra doesnt come in contact with it.

• question_answer168) Structure which remains unchanged during metamorphosis of frogs tadpole is:

A) intestine

B) lung

C) nervous system

D) heart

• question_answer169) Which one of the following groups of structures/organs have similar function?

A) Typhlosole in earthworm, intestinal villi in rat and contractile vacuole in Amoeba.

B) Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rat.

C) Antennae of cockroach, tympanum of frog and clitellum of earthworm.

D) Incisors of rat, gizzard (proventriculus) of cockroach and tube feet of starfish.

• question_answer170) Which of the following is a correct match?

A) Frog - External ears

B) Earthworm-Muscular gizzard, typhlosole.

C) Human - Fat globule, 10 pairs of cranial nerves.

D) Cockroach - Chilopoda

• question_answer171) Sweat glands, in human skin, are located in the:

A) malpighian layer of epidermis

B) dermis of skin

C) sub-dermal layer of fat cells

D) glandular layer of epidermis

• question_answer172) Which one of the following pairs of the kind of cells and their secretion is correctly matched?

A) Oxyntic cells - a secretion with pH between 2.0 and 3.0

B) Alpha cells of islets of Langerhans -secretion that decreases blood sugar level

C) Kupffer cells - a digestive enzyme that hydrolyses nucleic acids

D) Sebaceous glands - a secretion that evaporates for cooling

• question_answer173) Carbon dioxide$(C{{O}_{2}})$diffuses into blood from tissue site and passes to alveolar site in the form of:

A) bicarbonate; 70%

B) bicarbonate; 20-25%

C) carbamino haemoglobin; 60-70%

D) carbamino haemoglobin; 7%

• question_answer174) Which of the following is an incorrect statement?

A) Blood group $O$ person have A and B antigens on RBCs.

B) Eosinophils resist infections and are associated with allergic infection.

C) RBCs contain carbonic anhydrase.

D) T wave of normal ECG represent of depolarization of ventricle.

• question_answer175) Which one of the following is. Correct regarding the excretion?

A) Large amount of water from renal filtrate is reabsorbed in DCT and a less amount is reabsorbed by PCT.

B) The descending limb of loop of Henie is completely impermeable to salts.

C) Malpighian corpuscle is found in medulla region of kidney.

D) The colour of urine is pale yellow and is slightly alkaline in nature.

• question_answer176) If a stimulus, several times greater than the threshold stimulus is provided to a muscle fibre, it will:

A) contract with a larger force

B) contract with a smaller force

C) contract with the same force

D) undergo tetany

• question_answer177) A cricket player is lastly chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement?

A) Femur, malleus, tibia, metatarsals

B) Pelvis, ulna, patella, tarsals

C) Sternum, femur, tibia, fibula

D) Tarsals, femur, metatarsals, tibia

• question_answer178) A person having Parkinsons disease shows defective action of which neurotransmitter in brain:

A) dopamine

B) serotonin

D) eukalphia

• question_answer179) Excessive stimulation of vagus nerve in humans may lead to:

A) hoarse voice

B) peptic ulcers

C) efficient digestion of proteins

D) irregular contractions of diaphragm.

• question_answer180) Which of the following statements regarding glucagon is false?

A) It is secreted by a-cells of Langerhans

B) It acts antagonistically to insulin

C) It decreases blood sugar level

D) The gland responsible for its secretion is heterocrine gland.

• question_answer181) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Poor

B) Sick

C) Hardy

D) Weak

• question_answer182) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Dependent

B) Independent

C) Exposed

D) Tried

• question_answer183) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Heralds

B) Herald

C) Bring

D) Brings

• question_answer184) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Hangs

B) Hand

C) Goes

D) Shines

• question_answer185) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Know

B) Get

C) Think

D) Have

• question_answer186) Directions: Select the most appropriate word from the options against each number: Those living in the slums are 1 and tough because they are totally 2 to the vagaries and hardships of life. The rising sun 3 the day and the setting sun closes the day for them. It is like a drama where the curtain 4 up in the morning and comes down in the evening. They dont 5 hypertension and heart attacks because there is, after all 6 to worry about.

A) Everything

B) Something

C) Somewhere

D) Nothing

• question_answer187) Directions: Choose the word which is nearest in meaning to the given word. TRANSGRESSOR

A) Passenger

B) Law-breaker

C) Protector

• question_answer188) Directions: Choose the word which is nearest in meaning to the given word. EGREGIOUS

A) Common

B) Social

C) Plain

D) Atrocious

• question_answer189) Directions: Choose the word which is nearly opposite in meaning to the given word. PREDILECTION

A) Oblivion

B) Objectivity

C) Aversion

D) Defeat

• question_answer190) Directions: Choose the word which is nearly opposite in meaning to the given word. CACOPHONOUS

A) Tamed

B) Harmonious

C) Domestic

D) Silent

• question_answer191) Directions: Choose the word which is nearly opposite in meaning to the given word. Which of the following diagrams indicates the best relation between Hockey, Football and Cricket?

A) B) C) D) • question_answer192) Directions: Complete the series. A, B, D, G, ?, P

A) I

B) J

C) K

D) L

• question_answer193) Directions: Complete the series. 1, 6, 12, 19, 27 ?

A) 38

B) 35

C) 36

D) 54

• question_answer194) Directions: Complete the series. 125, 80, 45, 20?

A) 5

B) 8

C) 10

D) 12

• question_answer195) If A = C, B = D, C = E and so on, code of the word STUDENT

A) VWVFGPV

B) UUWFGPV

C) UVWFGPV

D) UWEGPV

• question_answer196) Directions: Choose the most appropriate word. RUSTLE is to LEAVES as TATTER is to

A) Snow

B) Wind

C) Rain

D) Storm

• question_answer197) Directions: Choose the most appropriate word. INDISCREET is to IMPRUDENT as INDISPOSED is to ______

A) Concerned

B) Reluctant

C) Crucial

D) Clear

• question_answer198) Directions: Choose the most appropriate word. ACCIDENT is to CAREFULNESS as DISEASE is to _____

A) Sanitation

B) Treatment

C) Medicine

D) Doctor

• question_answer199) Choose the statement which is wrong or doubtful.

A) All books can read. Some pencils are books. All pencils are clever. Therefore, all clever cannot read.

B) Some who fail are stupid. Some criminals are stupid Therefore, all criminals fail.

C) Some liar are thieves. All thieves are criminals. Therefore, some liars are criminals.

D) All that is given is black. Trees are green. Therefore, trees are black.

• question_answer200) Statement: Clearly, the judiciary cannot provide all answers. But it seems the public, weary of an inactive Executive, is turning to the Supreme Court as a last resort - an article. Assumptions:

 (i) The Supreme Court is above the Executive. (ii) The Supreme Court is more active than the Executive. (iii) The Executive does not have sufficient powers.

A) (i) & (ii) are implicit

B) (ii) & (iii) are implicit

C) (i) & (iii) are implicit

D) Only (ii) is implicit

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