# Solved papers for BCECE Medical BCECE Medical Solved Papers-2008

### done BCECE Medical Solved Papers-2008

• question_answer1) If E = energy, G = gravitational constant, $I=$ impulse and M = mass, then dimensions of $\frac{GI{{M}^{2}}}{{{E}^{2}}}$ are same as that of

A) time

B) mass

C) length

D) force

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• question_answer2) A point initially at rest moves along x-axis. Its acceleration varies with time as$a=(6\,t+5)\,m/{{s}^{2}}$. If it starts from origin, the distance covered in 2 s is

A) 20 m

B) 18 m

C) 16 m

D) 25 m

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• question_answer3) Three blocks of masses 2 kg, 3 kg and 5 kg are connected to each other with light st ring and are then placed on a friction less surface as shown in the figure. The system is pulled by a force F = 10 N, then tension ${{T}_{1}}=$ A) 1 N

B) 5 N

C) 8N

D) ION

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• question_answer4) A solid sphere rolls down two different inclined planes of same height, but of different inclinations. In both cases

A) speed and time of descent will be same

B) speed will be same, but time of descent will be different

C) speed will be different, but time of descent will be same

D) speed and time of descent both are different

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• question_answer5) The angular amplitude of a simple pendulum is${{\theta }_{0}}$. The maximum tension in its string will be

A) $mg\,(1-{{\theta }_{0}})$

B) $mg\,(1+{{\theta }_{0}})$

C) $mg\,(1-\theta _{0}^{2})$

D) $mg\,(1+\theta _{0}^{2})$

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• question_answer6) An engine pumps up 100 kg of water through a height of 10 m in 5s. Given that the efficiency of engine is 60%. If $g=10\,m{{s}^{-2}}$, the power of the engine is

A) 3.3 kW

B) 0.33 kW

C) 0.033 kW

D) 33 kW

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• question_answer7) At what speed, the velocity head of water is equal to pressure head of 40 cm of Hg?

A) 10.3 m/s

B) 2.8 m/s

C) 5.6 m/s

D) 8.4 m/s

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• question_answer8) If the electric flux entering and leaving an enclosed surface respectively are ${{\phi }_{1}}$ and ${{\phi }_{2}}$, the electric charge inside the surface will be

A) $\frac{{{\phi }_{2}}-{{\phi }_{1}}}{{{\varepsilon }_{0}}}$

B) $\frac{{{\phi }_{1}}+{{\phi }_{2}}}{{{\varepsilon }_{0}}}$

C) $\frac{{{\phi }_{1}}-{{\phi }_{2}}}{{{\varepsilon }_{0}}}$

D) ${{\varepsilon }_{0}}\,({{\phi }_{1}}+{{\phi }_{2}})$

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• question_answer9) In the propagation of light waves, the angle between the direction of vibration and plane of polarisation is

A) ${{0}^{o}}$

B) ${{90}^{o}}$

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

D) ${{80}^{o}}$

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• question_answer10) A light emitting diode (LED) has a voltage drop of 2 V across it and passes a current of 10 mA. When it operates with a 6 V battery through a limiting resistor R, the value of R is

A) $40\,\,k\Omega$

B) $4\,\,k\Omega$

C) $200\,\,k\Omega$

D) $400\,\,k\Omega$

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• question_answer11) The minimum potential difference between the base and emitter required to switch a silicon transistor ON is approximately

A) IV

B) 3V

C) 5V

D) 4.2V

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• question_answer12) Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is $\pi /3$ and the maximum height reached by it is 102 m. Then the maximum height reached by the other in metre is

A) 336

B) 224

C) 56

D) 34

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• question_answer13) Which one of the following is a possible nuclear reaction?

A) $_{5}^{10}B+_{2}^{4}He\xrightarrow{{}}_{7}^{13}N+_{1}^{1}H$

B) $_{11}^{23}Na+_{1}^{1}H\xrightarrow{{}}_{10}^{20}Ne+_{2}^{4}He$

C) $_{93}^{293}Np\xrightarrow{{}}_{94}^{293}Pu+{{\beta }^{-}}+\overline{v}$

D) $_{7}^{11}N+_{1}^{1}H\xrightarrow{{}}_{6}^{12}C+{{\beta }^{-}}+v$

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• question_answer14) Two circular discs A and B with equal radii are blackened. They are heated to same temperature and are cooled under identical conditions. What inference do you draw from their cooling curves?

A) A and B have same specific heats

B) Specific heat of A is less

C) Specific heat of B is less

D) Nothing can be said

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• question_answer15) During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio ${{C}_{p}}/{{C}_{V}}$for the gas is

A) 4/3

B) 2

C) 5/3

D) 3/2

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• question_answer16) The sum of two vectors $\vec{A}$ and $\vec{B}$ is at right angles to their difference. Then

A) A = B

B) A = 2B

C) B = 2A

D) $\vec{A}$ and $\vec{B}$ have the same direction

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• question_answer17) A ball is thrown up at an angle with the horizontal. Then the total change of momentum by the instant it returns to ground is

A) acceleration due to gravity x total time of flight

B) weight of the ball x half the time of flight

C) weight of the ball x total time of flight

D) weight of the ball x horizontal range

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• question_answer18) When a spring is stretched by a distance $x$, it exerts a force, given by $F=(-5x-16{{x}^{3}})N$ The work done, when the spring is stretched from 0.1 m to 0.2 m is

A) $8.7\times {{10}^{-2}}J$

B) $12.2\times {{10}^{-2}}J$

C) $8.7\times {{10}^{-1}}J$

D) $12.2\times {{10}^{-1}}J$

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• question_answer19) Time period of a simple pendulum of length I is ${{T}_{1}}$ and time period of a uniform rod of the same length $l$ pivoted about one end and oscillating in a vertical plane is ${{T}_{2}}$. Amplitude of oscillations in both the cases is small. Then${{T}_{1}}/{{T}_{2}}$ is

A) $\frac{1}{\sqrt{3}}$

B) 1

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

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

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• question_answer20) An insulator plate is passed between the plates of a capacitor. Then current A) first flows from A to B and then from B to A

B) first flows from B to A and then from A to B

C) always flows from B to A

D) always flows from A to B

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• question_answer21) Two parallel large thin metal sheets have equal surface charge densities $(\sigma =(26.4\times {{10}^{-12}}C/{{m}^{2}})$ of opposite signs. The electric field between these sheets is

A) 1.5 N/C

B) $1.5\times {{10}^{-10}}N/C$

C) 3 N/C

D) $3\times {{10}^{-10}}N/C$

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• question_answer22) The electric current passes through a metallic wire produces heat because of

A) collisions of conduction electrons with each other

B) collisions of the atoms of the metal with each other

C) the energy released in the ionization of the atoms of the metal

D) collisions of the conduction electrons with the atoms of the metallic wire

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• question_answer23) Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry respectively 0.2 A and 0.3 A currents in opposite direction. The magnetic field in tesla at the centre is

A) $35{{\mu }_{0}}/4$

B) ${{\mu }_{0}}/80$

C) $7{{\mu }_{0}}/80$

D) $5{{\mu }_{0}}/4$

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• question_answer24) Electromagnetic waves with frequencies greater than the critical frequency of ionosphere cannot be used for communication using sky wave propagation, because

A) the refractive index of the ionosphere becomes very high for $f>{{f}_{c}}$

B) the refractive index of the ionosphere becomes very low for $f>{{f}_{c}}$

C) the refractive index of the ionosphere becomes very high for $f>{{f}_{c}}$

D) None of the above

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• question_answer25) In a choke coil, the reactance ${{X}_{L}}$ and resistance R are such that

A) ${{X}_{L}}=R$

B) ${{X}_{L}}>>R$

C) ${{X}_{L}}<<R$

D) ${{X}_{L}}=\infty$

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• question_answer26) Reverberation time does not depend upon

A) temperature

B) volume of room

C) size of window

D) carpet and curtain

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• question_answer27) In a potentiometer, the null point is received at 7th wire. If now we have to change the null point at 9th wire, what should we do?

A) Attach resistance in series with battery

B) Increase resistance in main circuit

C) Decrease resistance in main circuit

D) Decrease applied emf

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• question_answer28) If average velocity becomes 4 times then what will be the effect on rms velocity at that temperature?

A) 1.4 times

B) 4 times

C) 2 times

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

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• question_answer29) What is the Q-value of the reaction $p{{+}^{7}}Li{{\xrightarrow{{}}}^{4}}He{{+}^{4}}He$ The atomic masses of $^{1}H,{{\,}^{4}}He$ and $^{7}Li$ are 1.007825 u, 4.002603 u and 7.016004 u respectively

A) 17.35 MeV

B) 18.06 MeV

C) 177.35 MeV

D) 170.35 MeV

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• question_answer30) A Carnots engine has an efficiency of 50% at sink temperature ${{50}^{o}}C$. Calculate the temperature of source.

A) ${{133}^{o}}C$

B) ${{143}^{o}}C$

C) ${{100}^{o}}C$

D) ${{373}^{o}}C$

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• question_answer31) $4\,\,{{m}^{3}}$ of water is to be pumped to a height of 20 m and forced into a reservoir at a pressure of $2\times {{10}^{5}}N/{{m}^{2}}$. The work done by the motor is (external pressure $={{10}^{5}}N/{{m}^{2}}$)

A) $8\times {{10}^{5}}J$

B) $16\times {{10}^{5}}J$

C) $12\times {{10}^{5}}J$

D) $32\times {{10}^{5}}J$

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• question_answer32) Moment of inertia of ring about its diameter is Then, moment of inertia about an axis passing through centre perpendicular to its plane is

A) $2I$

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

C) $\frac{3}{2}I$

D) $I$

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• question_answer33) When both the listener and source are moving towards each other, then which of the following is true regarding frequency and wavelength of wave observed by the observer?

A) More frequency, less wavelength

B) More frequency, more wavelength

C) Less frequency, less wavelength

D) More frequency, constant wavelength

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• question_answer34) The coefficient of friction between the tyres and the road is 0.25. The maximum speed with which car can be driven round a curve of radius 40 m without skidding is (assume $g=10\,\,m{{s}^{-2}}$)

A) $40\,\,m{{s}^{-1}}$

B) $20\,\,m{{s}^{-1}}$

C) $15\,\,m{{s}^{-1}}$

D) $10\,\,m{{s}^{-1}}$

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• question_answer35) A bomb of mass 3.0 kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg. The smaller mass goes at a speed of 80 m/s. The total energy imparted to the two fragments is

A) 1.07 kJ

B) 2.14 kJ

C) 2.4 kJ

D) 4.8 kJ

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• question_answer36) If distance between earth and sun become four times, then time period becomes

A) 4 times

B) 8 times

C) 1/4 times

D) 1/8 times

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• question_answer37) An air bubble is contained inside water. It behaves as a A) concave lens

B) convex lens

C) Neither convex nor concave

D) Cannot say

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• question_answer38) The power dissipated across resistance R which is connected across a battery of potential V is P. If resistance is doubled, then the power becomes

A) 1/2

B) 2

C) 1/4

D) 4

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• question_answer39) A 100 V, AC source of frequency 500 Hz is connected to an LCR circuit with L = 8.1 mH, C = 12.5 $\mu F$, R = 10 $\Omega$ all connected in series as shown in figure. What is the quality factor of circuit? A) 2.02

B) 2.5434

C) 20.54

D) 200.54

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• question_answer40) The inductance of a coil is $L=10\,H$ and resistance $R=5\,\Omega$. If applied voltage of battery is 10 V and it switches off in 1 millisecond, find induced emf of inductor.

A) $2\times {{10}^{4}}V$

B) $1.2\times {{10}^{4}}V$

C) $2\times {{10}^{4}}V$

D) None of these

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• question_answer41) A proton is moving in a uniform magnetic field B in a circular path of radius a in a direction perpendicular to z-axis along which field B exists. Calculate the angular momentum, if the radius is a charge on proton is e.

A) $\frac{Be}{{{a}^{2}}}$

B) $e{{B}^{2}}a$

C) ${{a}^{2}}eB$

D) $aeB$

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• question_answer42) We wish to see inside an atom. Assuming the atom to have a diameter of 100 pm, this means that one must be able to resolve a width of say 10 pm. If an electron microscope is used, the minimum electron energy required is about

A) 1.5 keV

B) 15 keV

C) 150 keV

D) 1.5 MeV

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• question_answer43) A body from height h is dropped. If the coefficient of restitution is e, then calculate the height achieved after one bounce.

A) ${{h}_{1}}={{e}^{2}}h$

B) ${{h}_{1}}={{e}^{4}}h$

C) ${{h}_{1}}=eh$

D) ${{h}_{1}}=\frac{h}{e}$

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• question_answer44) A beam of light travelling along x-axis is described by the electric field ${{E}_{y}}=(600\,\,V{{m}^{-1}})\,\sin \,\omega \,(t-x/c)$then maximum magnetic force on a charge$q=2e$, moving along y-axis with a speed of$3.0\times {{10}^{7}}m{{s}^{-1}}$ is $(e=1.6\times {{10}^{-19}}C)$

A) $19.2\times {{10}^{-17}}N$

B) $1.92\times {{10}^{-17}}N$

C) 0.192 N

D) None of these

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• question_answer45) Equipotential surfaces associated with an electric field which is increasing in magnitude along the x-direction are

A) planes parallel to $Yz-plane$

B) planes parallel to $xy$ -plane

C) planes parallel to $xz$-plane

D) coaxial cylinders of increasing radii around the x-axis

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• question_answer46) If 200 MeV energy is released in the fission of a single nucleus of $_{92}{{U}^{235}}$, how many fissions must occur per second to produce a power of 1 kW?

A) $3.12\times {{10}^{13}}$

B) $3.12\times {{10}^{3}}$

C) $3.1\times {{10}^{17}}$

D) $3.12\times {{10}^{19}}$

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• question_answer47) Find ratio of acceleration due to gravity g at depth d and at height h, where$d=2h$.

A) 1 : 1

B) 1 : 2

C) 2 : 1

D) 1 : 4

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• question_answer48) A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of combination is

A) -1.5D

B) -6.5D

C) + 6.5D

D) 4- 6.67 D

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• question_answer49) In a Youngs experiment, two coherent sources are placed 0.90 mm apart and the fringes are observed one metre away. If it produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be

A) $60\times {{10}^{-4}}cm$

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

C) $10\times {{10}^{-5}}cm$

D) $6\times {{10}^{-5}}cm$

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• question_answer50) A bar magnet when placed at an angle of ${{30}^{o}}$ to the direction of magnetic field induction of$5\times {{10}^{-2}}T$, experiences a moment of couple$25\times {{10}^{-6}}N-m$. If the length of the magnet is 5 cm its pole strength is

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

B) $5\times {{10}^{-2}}A-m$

C) 2 A-m

D) 5 A-m

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• question_answer51) The number of moles of $KMn{{O}_{4}}$ reduced by one mole of KI in alkaline medium is

A) 1

B) 5

C) 1/2

D) 1/5

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• question_answer52) Value of $x$ in potash alum,${{K}_{2}}S{{O}_{4}}.\,A{{l}_{x}}{{(S{{O}_{4}})}_{3}}\,.\,24{{H}_{2}}O$ is

A) 4

B) 1

C) 2

D) None of these

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• question_answer53) Ozone is used for purifying water because

A) it dissociates and release oxygen

B) do not leave any foul smell like chlorine

C) kills bacteria, cyst, fungi and acts as a biocide

D) All of the above

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• question_answer54) Internal energy is sum of

A) kinetic energy and potential energy

B) all types of energy of the system

C) energy of internal system

D) None of the above

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• question_answer55) Total volume of atoms present in a face centred cubic unit cell of a metal is (r = atomic radius)

A) $\frac{20}{3}\pi {{r}^{3}}$

B) $\frac{24}{3}\pi {{r}^{3}}$

C) $\frac{12}{3}\pi {{r}^{3}}$

D) $\frac{16}{3}\pi {{r}^{3}}$

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• question_answer56) If two molecules of A and B having mass 100 kg and 64 kg and rate of diffusion of A is $12\times {{10}^{-3}}$, then what will be the rate of diffusion of B?

A) $15\times {{10}^{-3}}$

B) $64\times {{10}^{-3}}$

C) $5\times {{10}^{-3}}$

D) $46\times {{10}^{-3}}$

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• question_answer57) Aniline is prepared in presence of Fe/HCl from

A) benzene

B) nitrobenzene

C) dinitrobenzene

D) None of these

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• question_answer58) Difference between S and ${{S}^{2-}}$ as ${{S}^{2-}}$ has

A) larger radii and larger size

B) smaller radii and larger size

C) larger radii and smaller size

D) smaller radii and smaller size

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• question_answer59) Which of the following is not correct?

A) ${{t}_{1/2}}=\frac{0.693}{k}$

B) $N={{N}_{0}}{{e}^{-kt}}$

C) $\frac{1}{N}-\frac{1}{{{N}_{0}}}=\ln \,k{{t}_{t/2}}$

D) None of the above

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• question_answer60) Which is not in accordance to Aufbau principle?

A) B) C) D) View Answer play_arrow
• question_answer61) $C{{H}_{3}}C{{H}_{2}}Cl$ undergoes homolytic fission, produces

A) $C{{H}_{3}}\overset{\bullet }{\mathop{C}}\,{{H}_{2}}$ and $\overset{\bullet }{\mathop{Cl}}\,$

B) $C{{H}_{3}}\overset{\oplus }{\mathop{C}}\,{{H}_{2}}$and $C{{l}^{O-}}$

C) $C{{H}_{3}}\overset{\oplus }{\mathop{C}}\,{{H}_{2}}$ and $\overset{\bullet }{\mathop{Cl}}\,$

D) $C{{H}_{3}}\overset{\bullet }{\mathop{C}}\,{{H}_{2}}$and $C{{l}^{O-}}$

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• question_answer62) C-C bond order in benzene is

A) 1

B) 2

C) between 1 and 2

D) None of these

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• question_answer63) In colloid particles, range of diameter is

A) 1 to 100 nm

B) 1 to 1000 cm

C) 1 to 1000 mm

D) 1 to 100 km

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• question_answer64) $Z{{n}^{2+}}\xrightarrow{{}}Zn(s);\,\,{{E}^{o}}=-0.76\,\,V$ $C{{u}^{2+}}\xrightarrow{{}}Cu(s);\,\,{{E}^{o}}=-0.34\,\,V$ Which of the following is spontaneous?

A) $Z{{n}^{2+}}+Cu\xrightarrow{{}}Zn+C{{u}^{2+}}$

B) $C{{u}^{2+}}+Zn\xrightarrow{{}}Cu+Z{{n}^{2+}}$

C) $Z{{n}^{2+}}+C{{u}^{2+}}\xrightarrow{{}}Zn+Cu$

D) None of the above

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• question_answer65) Highest electron affinity among the following is

A) fluorine

B) chlorine

C) sulphur

D) xenon

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• question_answer66) Which of the following noble gases is most reactive?

A) He

B) Ne

C) Ar

D) Xe

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• question_answer67) Which one of the following is a correct set with respect to molecule, hybridisation and shape?

A) $BeC{{l}_{2}},\,s{{p}^{2}}$, linear

B) $BeC{{l}_{2}},\,s{{p}^{2}}$, triangular planar

C) $BeC{{l}_{3}},\,s{{p}^{2}}$, triangular planar

D) $BeC{{l}_{3}},\,s{{p}^{2}}$, tetrahedral

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• question_answer68) ${{H}_{2}}S$ is not a/an

A) reducing agent

B) acidic

C) oxidising agent

D) None of the above

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• question_answer69) On doubling p and V with constant temperature, the equilibrium constant will

A) remain constant

B) become double

C) become one-fourth

D) None of the above

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• question_answer70) What is the electronic configuration of $M{{n}^{2+}}$?

A) $[Ne]\,3{{d}^{5}},4{{s}^{0}}$

B) $[Ar]\,3{{d}^{5}},4{{s}^{2}}$

C) $[Ar]\,3{{d}^{5}},4{{s}^{0}}$

D) $[Ne]\,3{{d}^{5}},4{{s}^{2}}$

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• question_answer71) Increase in atomic size down the group is due to

A) increase in number of electrons

B) increase in number of protons and neutrons

C) increase in number of protons

D) increase in number of protons, neutrons and electrons

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• question_answer72) Which is tribasic acid?

A) ${{H}_{3}}P{{O}_{2}}$

B) ${{H}_{3}}P{{O}_{4}}$

C) ${{H}_{4}}{{P}_{2}}{{O}_{7}}$

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

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• question_answer73) Highest ionising power is exhibited by

A) $\alpha$-rays

B) $\beta$-rays

C) $\gamma$-rays

D) X-rays

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• question_answer74) Blister copper is

A) impure Cu

B) Cu alloy

C) pure Cu

D) Cu having 1% impurity

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• question_answer75) Claisen condensation is not given by

A) B) C) D) View Answer play_arrow
• question_answer76) $AgN{{O}_{3}}$ does not give precipitate with $CHC{{l}_{3}}$ because

A) $CHC{{l}_{3}}$ does not ionise in water

B) $AgN{{O}_{3}}$ is chemically inert

C) $CHC{{l}_{3}}$ is chemically inert

D) None of the above

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• question_answer77) $_{90}T{{h}^{228}}\xrightarrow{{}}\,{{\,}_{83}}B{{i}^{212}}$

A) $4\,\alpha ,\,\,1\beta$

B) $4\,\alpha ,\,\,2\beta$

C) $5\,\alpha ,\,\,1\beta$,

D) $5\,\alpha ,\,\,2\beta$

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• question_answer78) Blood cells do not shrink in blood because blood is

A) hypotonic

B) isotonic

C) equimolar

D) hypertonic

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• question_answer79) The compound in which underlined carbon uses only its $s{{p}^{3}}$ hybrid orbitals for bond formation is

A) $C{{H}_{3}}\underline{C}OOH$

B) $C{{H}_{3}}\underline{C}ON{{H}_{2}}$

C) $C{{H}_{3}}\underline{C}{{H}_{2}}OH$

D) $C{{H}_{3}}\underline{C}{{H}_{2}}=C{{H}_{2}}$

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• question_answer80) t-butyl alcohol is

A) 2-methyl propan-2-ol

B) 2-methyl propan-1-ol

C) 3-methyl butan-1-ol

D) 3-methyl butan-2-ol

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• question_answer81) Optical isomerism is shown by

A) propanol-2

B) butanol-2

C) ethanol

D) methanol

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• question_answer82) When ${{C}_{2}}{{H}_{2}},\,C{{H}_{4}}$ and ${{C}_{2}}{{H}_{4}}$ passes through a test tube which have ammoniacal $C{{u}_{2}}C{{l}_{2}}$, find out which gas comes out unaffected from test tube?

A) ${{C}_{2}}{{H}_{2}}$ and $C{{H}_{4}}$

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

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

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

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• question_answer83) When hydrogen molecules decomposed into ifs atoms which conditions gives maximum yield of H atoms?

A) High temperature and low pressure

B) Low temperature and high pressure

C) High temperature and high pressure

D) Low temperature and low pressure

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• question_answer84) Natural rubber is a polymer of

A) styrene

B) chloroprene

C) $C{{H}_{2}}=\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,-CH=C{{H}_{2}}$ or isoprene

D) 1, 3-butadiene

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• question_answer85) Which of the following compounds is aromatic?

A) B) C) D) View Answer play_arrow
• question_answer86) The value of $\Lambda _{eq}^{\infty }$ for $N{{H}_{4}}Cl,\,NaOH$ and NaCI are respectively, 149.74, 248.1 and$126.4\,\,oh{{m}^{-1}}c{{m}^{2}}e{{q}^{-1}}$. The value of $\Lambda _{eq}^{\infty }$ of$N{{H}_{4}}OH$is

A) 371.44

B) 271.44

C) 71.44

D) Cannot be predicted from given data

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• question_answer87) Number of atoms of He in 100 u of He (atomic wt of He is 4) are

A) 25

B) 100

C) 50

D) $100\times 6\times {{10}^{-23}}$

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• question_answer88) Which has least gold number?

A) Gelatin

B) Starch

C) Albumin

D) Blood

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• question_answer89) In a compound C, H and N are .present in 9 : 1 : 3.5 by weight. If molecular weight of the compound is 108, then the molecular formula. of the compound is

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

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

C) ${{C}_{6}}{{H}_{8}}{{N}_{2}}$

D) ${{C}_{9}}{{H}_{12}}{{N}_{3}}$

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• question_answer90) In the following reaction ${{C}_{2}}{{H}_{2}}\xrightarrow[HgS{{O}_{4}}/{{H}_{2}}S{{O}_{4}}]{{{H}_{2}}O}X\rightleftarrows C{{H}_{3}}CHO$, What is X?

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

B) $C{{H}_{3}}-O-C{{H}_{3}}$

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

D) $C{{H}_{2}}=CHOH$

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• question_answer91) Which one of the following will most readily be dehydrated in acidic conditions?

A) B) C) D) View Answer play_arrow
• question_answer92) Which of the following solutions will have $pH=9$ at 298K?

A) $1\times {{10}^{-9}}M\,HCl$ solution

B) $1\times {{10}^{-5}}M\,NaOH$ solution

C) $1\times {{10}^{-9}}M\,KOH$ solution

D) Both [a] and [b]

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• question_answer93) The following data are for the decomposition of ammonium nitrite in aqueous solution.

 Vol. of ${{N}_{2}}$ in cc Time (min) 6.25 10 9.00 15 11.40 20 13.65 25 35.65 Infinity
The order of reaction is

A) zero

B) one

C) two

D) three

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• question_answer94) An alkyl halide by formation of its Grignard reagent and heating with water yields propane. What is the original alkyl halide?

A) Methyl iodide

B) Ethyl iodide

C) Ethyl bromide

D) Propyl bromide

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• question_answer95) The following reaction is known as A) Perkin reaction

B) Gattermann reaction

C) Kolbe reaction

D) Gattermann-aldehyde reaction

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• question_answer96) Aldehyde with $N{{H}_{2}}\,.\,N{{H}_{2}}$ forms

A) hydrazones

B) aniline

C) nitrobenzene

D) None of these

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• question_answer97) vant Hoff factor of $Ca{{(N{{O}_{3}})}_{2}}$ is

A) one

B) two

C) three

D) four

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• question_answer98) 1 mole of ${{H}_{2}}$ and 2 moles of ${{I}_{2}}$ are taken initially in a two litre vessel. The number of moles of ${{H}_{2}}$ at equilibrium is 0.2. Then, the number of moles of ${{I}_{2}}$ and HI at equilibrium are

A) 1.2, 1.6

B) 1.8, 1.0

C) 0.4, 2.4

D) 0.8, 2.0

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• question_answer99) The volume of water to be added to $100\,\,c{{m}^{3}}$ of 0.5 N ${{H}_{2}}S{{O}_{4}}$ to get decinormal concentration is

A) $400\,\,c{{m}^{3}}$

B) $450\,\,c{{m}^{3}}$

C) $500\,\,c{{m}^{3}}$

D) $100\,\,c{{m}^{3}}$

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• question_answer100) 1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent weight of metal is

A) 1.52

B) 0.995

C) 190

D) 9

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• question_answer101) Which is gonadotropin hormone?

A) GH

B) MSH

C) ADH

D) FSH and LH

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• question_answer102) Bowmans capsule is found in

A) glomerulus

B) uriniferous tubule

C) nephron

D) Malpighian capsule

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• question_answer103) During starvation what will be sequence of ending of food stuffs?

A) Carbohydrate-fat-protein

B) Carbohydrate - protein -fat

C) Fat-protein-carbohydrate

D) Fat -carbohydrate - protein

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• question_answer104) Husband has blood group A and wife has blood group B. What is the blood group of children?

A) A

B) B

C) AB

D) A, B, AB and O

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• question_answer105) The fruit of Solanaceae is

A) berry or capsule

B) pome

C) legume or pod

D) drupe

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• question_answer106) ${{O}_{3}}$ depletion is due to

A) PAN

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

C) CFCs

D) sulphates

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• question_answer107) Initiation codon is

A) AUG

B) UUU

C) UAG

D) AAG

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• question_answer108) Mark the correct sequence of layers found in root anatomy

A) Epiblema, cortex, endodermis, pericycle

B) Cortex, epiblema, pericycle, endodermis

C) Epiblema, cortex, pericycle, endodermis

D) Cortex, epiblema, endodermis, epidermis

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• question_answer109) Crypts of Leiberkuhn is present in

A) small intestine

B) liver

C) stomach

D) colon

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• question_answer110) A fruit in which seed coat and fruit wall is fused known as caryopsis present in

A) wheat

B) sunflower

C) mango

D) tomato

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• question_answer111) Which is absent in a leaf?

A) Lenticel

B) Stomata

C) Mesophyll

D) Chloroplast

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• question_answer112) Which is a sex linked disease?

A) Sickle cell anaemia

B) Haemophilia

C) Phenylketonuria

D) Albinism

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• question_answer113) In gyandromorphs

A) some cells of body contain XX and some cells with genotype XY

B) all cells have XX genotype

C) all cells have XY genotype

D) all cells with genotype XXY

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• question_answer114) Catalytic converter in vehicle is used for controlling

A) air pollution

B) water pollution

C) radioactive pollution

D) soil pollution

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• question_answer115) Bile salts help in

A) digestion of fat

B) digestion and absorption of fat

C) digestion of protein

D) digestion of protein and fat

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• question_answer116) Spore of Funaria on germination gives rise to

A) protonema

B) sporophyte

C) prothallus

D) capsule

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• question_answer117) Maximum numbers of vascular bundles are present in

A) monocot stem

B) monocot root

C) dicot stem

D) dicotroot

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• question_answer118) A vascular bundles without pith is

A) protostele

B) siphonostele

C) solenostele

D) None of these

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• question_answer119) Ulothrix releases zoospore during

A) evening

B) morning

C) night

D) noon

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• question_answer120) A circulatory system, which is formed by capillaries and ends with capillaries is

A) renal

B) hepatic

C) double circulatory system

D) hypophysial

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• question_answer121) Theory of natural selection was given by

A) Lamarck

B) Darwin

C) Wallace

D) Weismann

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• question_answer122) In photosynthesis $NADP{{H}_{2}}$ is formed but in respiration ifs forms during

A) HMP

B) ETS

C) Krebs cycle

D) None of these

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• question_answer123) Term New Systematic was given by

A) Julian Huxley

B) Bateson

C) Linnaeus

D) Darwin

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• question_answer124) Adrenalin and nor-adrenalin are hormones and acts as

A) energy producing agent

B) food storage material

C) neuro transmitter

D) energy storing substances

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• question_answer125) In which cell organelles a lipoprotein covering is absent in?

A) Ribosomes

B) Lysosomes

C) Mitochondria

D) Peroxisomes

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• question_answer126) Enveloped virus enters into host cells by

A) injecting own nucleic acid inside host cells

B) by contact with cell receptor and endocytosis

C) by phagocytosis

D) fusion with the plasma membrane of host

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• question_answer127) On selfing RrTt we produce 400 plant, find out number of plants with genotype RrTt

A) 100

B) 225

C) 50

D) 300

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• question_answer128) Auxin causes

A) growth of apical bud

B) growth of lateral bud

C) seed dormancy

D) fall of leaf

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• question_answer129) Which of the following set contains only homologous organs?

A) Whales flipper, horses forelimb, human hand

B) Wings of butterfly, crow and insect

C) Horses forelimb, insect wing, human hand

D) Vermiform appendix, body hair, and patella

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• question_answer130) Quinine used for treatment of malarial fever extracted from

A) Atropa belladona

B) Cinchona officinalis

C) Aconitum napellus

D) Rauwolffia serpentine

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• question_answer131) Salivary gland in earthworm is found in

A) dorsal wall of buccal cavity

B) ventral wall of buccal cavity

C) pharyngeal wall

D) None of the above

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• question_answer132) Layers of an ovum from outside to inside is

A) corona radiata, zoria pellucida and vitelline membrane

B) zona pellucida, corona radiata and vitelline membrane

C) vitelline membrane, zona pellucida and corona radiata

D) zona pellucida, vitelline membrane and corona radiate

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• question_answer133) Longest loop of Henie is found in

A) kangaroo rat

B) opposum

C) rhesus monkey

D) All of these

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• question_answer134) Which of the following is not the character of Taenia solium?

A) Apolysis

B) Proglottid

C) Metamerism

D) Strobila

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• question_answer135) If AAbb $\times$ aaBB, then phenotypic ratio of its progeny will be

A) 9 : 3 : 3 : 1

B) 1 : 2 : 1

C) 1 : 1 : 1 : 1

D) 4 : 1

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• question_answer136) Nucellus forms which of the following part of fruit?

A) Seed coat

B) Perisperm

C) Seed

D) Raphe

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• question_answer137) Which of the following are the indicators of pollution?

A) Lichen

B) Fungi

C) Algae

D) None of these

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• question_answer138) A cell swells up when kept in

A) hypotonic solution

B) hypertonic solution

C) isotonic solution

D) All of the above

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• question_answer139) If flowers are cut and dipped in dilute NaCI solution, then

A) transpiration is low

B) endo-osmosis occurs

C) no bacterial growth takes .place

D) absorption of solute inside flower cell takes place

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• question_answer140) Opening and dosing of stomata is due to

A) $C{{a}^{2+}}$

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

C) ${{K}^{+}}$

D) $C{{l}^{-}}$

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• question_answer141) Which of the following characters are present in class Crustacea?

A) Cephalothorax, gills and appendages

B) Head and thorax, gills and appendages

C) Cephalothorax, book gills and appendages

D) Head and thorax, book gills and appendages

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• question_answer142) Which of the following is not a concept of Lamarck?

A) Environmental pressure causes variation

B) Rate and survival of organism is different due to variation

C) Inheritance of acquired character

D) If an organ is used constantly it will continuously increase its size

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• question_answer143) In which of the following features, Cycas resembles with angiosperms?

A) Presence of vessels

B) Circinate vernation

C) Dichotomously branched leaves

D) Pollen tube is the carrier of male gametes

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• question_answer144) Transfer of any gene into a completely different organism can be done through

A) genetic engineering

B) tissue culture

C) transformation

D) None of the above

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• question_answer145) Diatoms belong to which class?

A) Phaeophyceae

B) Bacillariophyceae

C) Chlorophyceae

D) Xanthophyceae

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• question_answer146) Pneumotaxic centre is present in

A) cerebrum

B) cerebellum

C) medulla oblongata

D) pons varolii

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• question_answer147) Which layer develops first during embryonic development?

A) Ectoderm

B) Mesoderm

C) Ehdoderm

D) Both [b] and [c]

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• question_answer148) During inflammation which of the following is secreted by connective tissue?

A) Heparin

B) Histamine

C) Serotonin

D) Glucagon

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• question_answer149) Stability of ecosystem depends upon

A) primary productivity

B) interchange between producers and consumers

C) number of producers

D) number of consumers

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• question_answer150) What is C-value paradox?

A) Haploid DNA content

B) Huge variations in C-values between species

C) Constant C-value for all species

D) Diploid DNA content

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