# Solved papers for CET Karnataka Medical CET - Karnataka Medical Solved Paper-2006

### done CET - Karnataka Medical Solved Paper-2006

• question_answer1) The twinkling effect of star light is due to:

A) total internal reflection

B) high dense matter of star

C) constant burning of hydrogen in the star

D) the fluctuating apparent position of the star being slightly different from the actual position of the star

• question_answer2) The width of the diffraction band varies:

A) inversely as the wavelength

B) directly as the width of the slit

C) directly as the distance between the slit and the screen

D) inversely as the size of the source from which the slit is illuminated

• question_answer3) An unpolarised beam of intensity I0 is incident on a pair of nicols making an angle of 60? with each other. The intensity of light emerging from the pair is:

A) ${{I}_{0}}$

B) ${{I}_{0}}/2$

C) ${{I}_{0}}/4$

D) ${{I}_{0}}/8$

• question_answer4) Look at the graphs [a] to [d] carefully and indicate which of these possibly represents one dimensional motion of a particle?

A)

B)

C)

D)

• question_answer5) A cyclist starts from the centre O of a circular park of radius 1 km, reaches the edge P of the park, then cycles along the circumference and returns to the centre along QO as shown in the figure. If the round trip takes 10 min, the net displacement and average speed of the cyclist (in metre and kilometre per hour) are:

A) 0,1

B) $\frac{\pi +4}{2},0$

C) $21.4,\frac{\pi +4}{2}$

D) $0,21.4$

• question_answer6) When a low flying aircraft passes over head, we sometimes notice a slight shaking of the picture on our TV screen. This is due to:

A) diffraction of the signal received from the antenna

B) interference of the direct signal received by the antenna with the weak signal reflected by the passing aircraft

C) change of magnetic flux occuring due to the passage of aircraft

D) vibration created by the passage of aircraft

• question_answer7) A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between the first dark fringes on either side of the central bright fringe is:

A) 1.2 cm

B) 1.2 mm

C) 2.4 cm

D) 2.4 mm

• question_answer8) The physical quantity having the dimensions [${{\text{M}}^{\text{-1}}}{{\text{L}}^{\text{-3}}}{{\text{T}}^{\text{2}}}$] is:

A) resistance

B) resistivity

C) electrical conductivity

D) electromotive force

• question_answer9) A battery of emf 10 V and internal resistance 3 n is connected to a resistor. The current in the circuit is 0.5 A. The terminal voltage of the battery when the circuit is closed is:

A) 10 V

B) 0 V

C) 1.5 V

D) 8.5 V

• question_answer10) A galvanometer coil has a resistance of 15$\Omega$ and gives full scale deflection for a current of 4 mA. To convert it to an ammeter of range 0 to 6 A:

A) 10 m$\Omega$ resistance is to be connected in parallel to the galvanometer

B) 10 m$\Omega$ resistance is to be connected in series with the galvanometer

C) 0.1$\Omega$ resistance is to be connected in parallel to the galvanometer

D) 0.1$\Omega$ resistance is to be connected in series with the galvanometer

• question_answer11) The electron dirft speed is small and the charge of the electron is also small but still, we obtain large current in a conductor. This is due to:

A) the conducting property of the conductor

B) the resistance of the conductor is small

C) the electron number density of the conductor is small

D) the electron number density of the conductor is enormous

• question_answer12) A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. It is suspended in mid-air by a uniform horizontal magnetic field B. The magnitude of B (in tesia) is: (assume$g\text{ }=\text{ }9.8\text{ }m{{s}^{-2}}$)

A) 2

B) 1.5

C) 0.55

D) 0.65

• question_answer13) In the circuit shown the value of I m ampere is:

A) 1

B) 0.60

C) 0.4

D) 1.5

• question_answer14) A Gaussian sphere encloses an electric dipole within it. The total flux across the sphere is:

A) zero

B) half that due to a single charge

C) double that due to a single charge

D) dependent on the position of the dipole

• question_answer15) A parallel plate air capacitor has a capacitance C. When it is half filled with a dielectric of dielectric constant 5, the percentage increase in the capacitance will be:

A) 400 %

B) 66.6 %

C) 33.3 %

D) 200 %

• question_answer16) A comb run through ones dry hair attracts small bits of paper. This is due to:

A) comb is a good conductor

B) paper is a good conductor

C) the atoms in the paper get polarised by the charged comb

D) the comb possesses magnetic properties

• question_answer17) The top of the atmosphere is about 400 kV with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100 Vm-1. Still, we do not get an electric shock as we step out of our house into the open house because: (assume the house to be a steel cage so that there is no field inside)

A) there is a potential difference between our body and the ground

B) 100 Vm-1 is not a high electric field so that we do not feel the shock

C) our body and the ground forms an equipotential surface

D) the dry atmosphere is not a conductor

• question_answer18) The specific charge of a proton is 9.6 x 107 C kg-1. The specific charge of an alpha panicle will be:

A) $9.6\times {{10}^{7}}C\,\,k{{g}^{-1}}~~$

B) $19.2\times {{10}^{7}}C\text{ }k{{g}^{-1}}$

C) $4.8\times {{10}^{7}}C\text{ }k{{g}^{-1}}$

D) $2.4\times {{10}^{7}}C\text{ }k{{g}^{-1}}$

• question_answer19) When light of wavelength 300 nm falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength 600 nm is sufficient for liberating photoelectrons. The ratio of the work function of the two emitters is:

A) 1 : 2

B) 2 : 1

C) 4 : 1

D) 1 : 4

• question_answer20) White light is passed through a dilute solution of potassium permanganate. The spectrum produced by the emergent light is:

A) band emission spectrum

B) line emission spectrum

C) band absorption spectrum

D) line absorption spectrum

• question_answer21) If ${{\lambda }_{1}}$and ${{\lambda }_{2}}$are the wavelengths of the first members of the Lyman and Paschen series respectively, then ${{\lambda }_{1}}:{{\lambda }_{2}}$ is:

A) 1 : 3

B) 1 : 30

C) 7 : 50

D) 7 : 108

• question_answer22) Activity of a radioactive sample decreases to (1/ 3)rd 1 of its original value in 3 days. Then, in 9 days its activity will become:

A) (1 / 27) of the original value

B) (1 / 9) of the original value

C) (1 / 18) of the original value

D) (1 / 3) of the original value

• question_answer23) Identify the operation performed by the circuit given below:

A) NOT

B) AND

C) OR

D) NAND

• question_answer24) The working of which of the following is similar to that of a slide projector?

A) Electron microscope

B) Scanning electron microscope

C) Transmission electron microscope

D) Atomic force microscope

• question_answer25) In a transistor the collector current is always less than the emitter current because:

A) collector side is reverse biased and the emitter side is forward biased

B) a few electrons are lost in the base and only remaining ones reach the collector

C) collector being reverse biased, attracts less electrons

D) collector side is forward biased and emitter side is reverse biased

• question_answer26) A transparent cube of 0.21 m edge contains a small air bubble. Its apparent distance when viewed through one face of the cube is 0.10 m and when viewed from the opposite face is 0.04 m. The actual distance of the bubble from the second face of the cube is:

A) 0.06 m

B) 0.17 m

C) 0.05 m

D) 0.04 m

• question_answer27) White light is incident on one of the refracting surfaces of a prism of angle $5{}^\circ$. If the refractive indices for red and blue colours are 1.641 and 1.659 respectively, the angular separation between these two colours when they emerge out of the prism is:

A) $0.9{}^\circ$

B) $0.09{}^\circ$

C) $1.8{}^\circ$

D) $1.2{}^\circ$

• question_answer28) For a given lens, the magnification was found to be twice as large as when the object was 0.15 m distant from it as when the distance was 0.2 m. The focal length of the lens is:

A) 1.5 m

B) 0.20 m

C) 0.10 m

D) 0.05 m

• question_answer29) To a fish under water, viewing obliquely a fisherman standing or the bank of a lake, the man looks:

A) taller than what he actually is

B) shorter that what he actually is

C) the same height as he actually is

D) depends on the obliquity

• question_answer30) A thin prism ${{P}_{1}}$with angle $4{}^\circ$ made from a glass of refractive index 1.54 is combined with another thin prism ${{P}_{2}}$made from glass of refractive index 1.72 to produce dispersion without deviation. The angle of the prism $\,{{P}_{2}}$is:

A) $5.33{}^\circ$

B) $4{}^\circ$

C) $3{}^\circ$

D) $2.6{}^\circ$

• question_answer31) If white light is used in the Newtons rings experiment, the colour observed in the reflected light is complementary to that observed in the transmitted light through the same point. This is due to:

A) $90{}^\circ$change of phase in one of the reflected waves

B) $180{}^\circ$change of phase in one of the reflected waves

C) $145{}^\circ$change of phase in one of the reflected waves

D) $45{}^\circ$change of phase in one the reflected waves

• question_answer32) Specific rotation of sugar solution is 0.5 deg m2/kg. 200 kgm-3 of impure sugar solution is taken in a sample polarimeter tube of length 20 cm and optical rotation is found to be $19{}^\circ$.The percentage of purity of sugar is:

A) 20 %

B) 80 %

C) 95 %

D) 89 %

• question_answer33) A simple pendulum has a length I and the mass of the bob is m. The bob is given a charge q coulomb. The pendulum is suspended between the vertical plates of a charged parallel plate capacitor. If E is the electric field strength between the plates, the time period of the pendulum is given by:

A) $2\pi \sqrt{\frac{l}{g}}$

B) $2\pi \sqrt{\frac{l}{\sqrt{g+\frac{qE}{m}}}}$

C) $2\pi \sqrt{\frac{l}{\sqrt{g-\frac{qE}{m}}}}$

D) $2\pi \sqrt{\frac{l}{\sqrt{{{g}^{2}}+{{\left( \frac{qE}{m} \right)}^{2}}}}}$

• question_answer34) A gang capacitor is formed by interlocking a number of plates as shown in figure. The distance between the consecutive plates is 0.885 cm and the Overlapping area of the 1111 plates is 5 cm2. The capacity of the unit is:

A) 1.06 pF

B) 4 pF

C) 6.36 pF

D) 12.72 pF

• question_answer35) A satellite in a circular orbit of radius R has a period of 4 h. Another satellite with orbital radius 3 R around the same planet will have a period (in hours):

A) 16

B) 4

C) $4\sqrt{27}$

D) $4\sqrt{8}$

• question_answer36) The freezer in a refrigerator is located at the top section so that:

A) the entire chamber of the refrigerator is cooled quickly due to convection

B) the motor is not heated

C) the heat gained from the environment is high

D) the heat gained from the environment is low

• question_answer37) The unit of Stefans constant is:

A) $\text{W}{{\text{m}}^{\text{-2}}}{{\text{K}}^{\text{-1}}}$

B) $\text{Wm }{{\text{K}}^{\text{-4}}}$

C) $\text{W}{{\text{m}}^{\text{-2}}}{{\text{K}}^{\text{-4}}}$

D) $\text{M}{{\text{m}}^{\text{-2}}}{{\text{K}}^{\text{-4}}}$

• question_answer38) A monoatomic gas is suddenly compressed to (1/8)th of its initial volume adiabatically. The ratio of its final pressure to the initial pressure is: (Given the ratio of the specific heats of the given gas to be 5/3)

A) 32

B) 40/3

C) 24/5

D) 8

• question_answer39) A Carnot engine takes heat from a reservoir at $627{}^\circ \text{ }C$and rejects heat to a sink at$27{}^\circ C$. Its efficiency will be:

A) 3 / 5

B) 1 / 3

C) 2 / 3

D) 200 / 209

• question_answer40) A 30 V 90 W lamp is to be operated on a 120 V DC line. For proper glow, a resistor of...... $\Omega$ should be connected in series with the lamp.

A) 40

B) 10

C) 20

D) 30

• question_answer41) A battery consists of a variable number (n) of identical cells, each having an internal resistance r connected in series. The terminals of the battery are short-circuited. A graph of current (I) in the circuit versus the number of cells will be as shown in figure:

A)

B)

C)

D)

• question_answer42) A tuning fork A produces 4 beats/s with another tuning fork B of frequency 320 Hz. On filing one of the prongs of A, 4 beats/s are again heard when sounded with the same fork B. Then, the frequency of the fork A before filing is:

A) 328 Hz

B) 316 Hz

C) 324 Hz

D) 320 Hz

• question_answer43) When the length of the vibrating segment of a sonometer wire is increased by 1%, the percentage change in its frequency is:

A) $\frac{100}{101}$

B) $\frac{99}{100}$

C) $1$

D) 2

• question_answer44) The sprinkling of water reduces slightly the temperature of a closed room because:

A) temperature of water is less than that of the room

B) specific heat of water is high

C) water has large latent heat of vaporization

D) water is a bad conductor of heat

• question_answer45) The equation of a simple harmonic wave is given by y = 5 sin $\frac{\pi }{2}$ (100t - x), where x and y are in metre and time is in second. The period of the wave in second will be:

A) 0.04

B) 0.01

C) 1

D) 5

• question_answer46) The loudness and pitch of a sound note depends on:

A) intensity and frequency

B) frequency and number of harmonics

C) intensity and velocity

D) frequency and velocity

• question_answer47) For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is:

A) a child revolving in a giant wheel

B) a driver in a sports car moving with a constant high speed of 200 kmh-1 on a straight rod

C) the pilot of an aeroplane which is taking off

D) a cyclist negotiating a sharp curve

• question_answer48) A rectangular vessel when full of water, takes 10 min to be emptied through an orifice in its bottom. How much time will it take to be emptied when half filled with water?

A) 9 min

B) 7 min

C) 5 min

D) 3 min

• question_answer49) If there were no gravity, which of the following will not be there for a fluid?

A) Viscosity

B) Surface tension

C) Pressure

D) Archimedes upward thrust

• question_answer50) In a LCR series circuit, the potential difference between the terminals of the inductance is 60 Y between the terminals of the capacitor is 30 V and that across the resistance is 40 V. Then, supply voltage will be equal to:

A) 50 V

B) 70 V

C) 130 V

D) 10 V

• question_answer51) When deuterium and helium are subjected to an accelerating field simultaneously then:

A) both acquire same energy

B) deuterium accelerates faster

C) helium accelerates faster

D) neither of them is accelerated

• question_answer52) A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm length. A current of 5 A falls through it. The magnetic field at the axis inside the solenoid is:

A) $2\pi \times {{10}^{-3}}T$

B) $2~\pi \times {{10}^{-5}}T$

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

D) $4\pi \times {{10}^{-3}}T$

• question_answer53) A wire PQR is bent as shown in figure and is placed in a region of uniform magnetic field B. The length of PQ = QR = I. A current I ampere flows through the wire as shown. The magnitude of the force on PQ and QR will be:

A) BIl.0

B) 2BIl.0

C) 0, BIl

D) 0, 0

• question_answer54) A choke is preferred to a resistance for limiting current in AC circuit because:

A) choke is cheap

B) there is no wastage of power

C) choke is compact in size

D) choke is a good absorber of heat

• question_answer55) A current of 6 A enters one comer P of an equilateral triangle PQR having 3 wires of resistances 2 0 each and leaves by the corner R. Then the current I1 and I2 are:

A) 2 A, 4 A

B) 4 A, 2 A

C) I A, 2 A

D) 2 A, 3 A

• question_answer56) To a germanium crystal equal number of aluminium and indium atoms are added. Then:

A) it remains an intrinsic semiconductor

B) it becomes a n-type semiconductor

C) it becomes a p-type semiconductor

D) it becomes an insulator

• question_answer57) Maximum velocity of the photoelectrons emitted by a metal surface is$1.2\times {{10}^{6}}m{{s}^{-1}}$. Assuming the specific charge of the electron to be$1.8\times {{10}^{11}}C\text{ }k{{g}^{-1}}$, the value of the stopping potential in volt will be:

A) 2

B) 3

C) 4

D) 6

• question_answer58) Which of the following figures represents the variation of particle momentum and associated de-Broglie wavelength?

A)

B)

C)

D)

• question_answer59) The term liquid crystal refers to a state that is intermediate between:

A) crystalline solid and amorphous liquid

B) crystalline solid and vapour

C) amorphous liquid and its vapour

D) a crystal immersed in a liquid

• question_answer60) If ${{r}_{1}}$and ${{r}_{2}}$are the radii of the atomic nuclei of mass numbers 64 and 125 respectively, then the ratio $\left( {{r}_{1}}/{{r}_{2}} \right)$ is:

A) $\frac{64}{125}$

B) $\sqrt{\frac{64}{125}}$

C) $\frac{5}{4}$

D) $\frac{4}{5}$

• question_answer61) Which of the following is not an ore of magnesium?

A) Carnallite

B) Dolomite

C) Calamine

D) Sea water

• question_answer62) The atomic number of $Ni$ and $Cu$ are 28 and 29 respectively. The electronic configuration. $1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{d}^{10}}$ represents:

A) $C{{u}^{+}}$

B) $C{{u}^{2+}}$

C) $N{{i}^{2+}}$

D) $Ni$

• question_answer63) In the following, the element with the highest ionisation energy is:

A) $\text{ }\!\![\!\!\text{ Ne }\!\!]\!\!\text{ }3{{s}^{2}}3{{p}^{1}}$

B) $\text{ }\!\![\!\!\text{ Ne }\!\!]\!\!\text{ }3{{s}^{2}}3{{p}^{3}}$

C) $\text{ }\!\![\!\!\text{ Ne }\!\!]\!\!\text{ }3{{s}^{2}}3{{p}^{2}}$

D) $\text{ }\!\![\!\!\text{ Ne }\!\!]\!\!\text{ }3{{s}^{2}}3{{p}^{4}}$

• question_answer64) In the conversion of $B{{r}_{2}}$ to $BrO_{3}^{-}$, the oxidation number of $Br$ changes from:

A) zero to $+5$

B) $+1$ to $+5$

C) zero to $-3$

D) $+2$ to $+5$

• question_answer65) Among the alkali metals cesium is the most reactive because:

A) its incomplete shell is nearest to the nucleus

B) it has a single electron in the valence shell

C) it is the heaviest alkali metal

D) the outermost electron is more loosely bound than the outermost electron of the other alkali metals

• question_answer66) Which of the following represents the Lewis structure of ${{N}_{2}}$ molecule?

A)

B)

C)

D)

• question_answer67) Hydrogen bond is strongest in :

A) $S-H...O$

B) $O-H...S$

C) $F-H...F$

D) $O-H...N$

• question_answer68) The decomposition of a certain mass of $CaC{{O}_{3}}$ gave $11.2\text{ }d{{m}^{3}}$of $C{{O}_{2}}$ gas at STP The mass of $KOH$ required to completely neutralise the gas is:

A) $56g$

B) $28g$

C) $42g$

D) $20g$

• question_answer69) The density of a gas is $1.964g\text{ }d{{m}^{-3}}$at $273K$ and 76 cm $Hg$. The gas is:

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

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

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

D) $Xe$

• question_answer70) $0.06mole$of $KN{{O}_{3}}$ solid is added to $100c{{m}^{3}}$of water at 298K. The enthalpy of $KN{{O}_{3}}$aqueous solution is $35.8kJ\text{ m}o{{l}^{-1}}$. After the solute is dissolved the temperature of the solution will be:

A) $293K$

B) $298K$

C) $301K$

D) $304K$

• question_answer71) $4moles$each of $S{{O}_{2}}$ and ${{O}_{2}}$ gases are allowed to react to form $S{{O}_{3}}$ in a closed vessel. At equilibrium 25% of ${{O}_{2}}$ is used up. The total number of moles of all the gases at equilibrium is:

A) $6.5$

B) $7.0$

C) $8.0$

D) $2.0$

• question_answer72) An example for autocatalysis is:

A) oxidation of $NO$ to $N{{O}_{3}}$

B) oxidation of $S{{O}_{2}}$ to $S{{O}_{3}}$

C) decomposition of $KCl{{O}_{3}}$ to $KCl$ and ${{O}_{2}}$

D) oxidation of oxalic acid by acidified $KMn{{O}_{4}}$

• question_answer73) During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into:

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

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

C) $NaCN$

D) $NaNC$

• question_answer74) Identify the product Y in the following reaction sequence:

A) Pentane

B) cyclobutane-

C) Cyclopentane

D) Cyclopentanone

• question_answer75) The reaction ${{C}_{2}}{{H}_{5}}ONa+{{C}_{2}}{{H}_{5}}I\to {{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}$$+NaI$ is known as:

A) Kolbes synthesis

B) Wurtzs synthesis

C) Williamsons synthesis

D) Grignards synthesis

• question_answer76) $\Delta {{G}^{o}}\,vs\,\,\,T$plot in the Ellinghams diagram slopes downwards for the reactions:

A) $Mg+\frac{1}{2}{{O}_{2}}\xrightarrow{{}}MgO$

B) $2Ag+\frac{1}{2}{{O}_{2}}\xrightarrow{{}}A{{g}_{2}}O$

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

D) $CO+\frac{1}{2}{{O}_{2}}\xrightarrow{{}}C{{O}_{2}}$

• question_answer77) Which of the following taking place in the blast furnace is endothermic?

A) $CaC{{O}_{3}}\xrightarrow{{}}CaO+C{{O}_{2}}$

B) $2C+{{O}_{2}}\xrightarrow{{}}2CO$

C) $C+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}}$

D) $F{{e}_{2}}{{O}_{3}}+3CO\xrightarrow{{}}2Fe+3C{{O}_{2}}$

• question_answer78) Liquor ammonia bottles are opened only after cooling. This is because:

A) it is a mild explosive

B) it is a corrosive liquid

C) it is a lachrymatory

D) it generates high vapour pressure

• question_answer79) The formation of $O_{2}^{+}{{[Pt{{F}_{6}}]}^{-}}$ is the basis for the formation of xenon fluorides. This is because:

A) ${{O}_{2}}$ and $Xe$ have comparable sizes

B) Both ${{O}_{2}}$ and $Xe$ are gases

C) ${{O}_{2}}$ and $Xe$ have comparable ionisation energies

D) ${{O}_{2}}$ and $Xe$ have comparable electro- negativities

• question_answer80) The highest magnetic moment is shown by the transition metal ion with the configuration:

A) $3{{d}^{2}}$

B) $3{{d}^{5}}$

C) $3{{d}^{7}}$

D) $3{{d}^{9}}$

• question_answer81) A transition metal ion exists in its highest oxidation state. It is expected to behave as:

A) a chelating agent

B) a central metal in a coordination compound

C) an oxidising agent

D) a reducing agent

• question_answer82) In which of the following complex ion, the central metal ion is in a state of $s{{p}^{3}}{{d}^{2}}$ hybridisation?

A) ${{[Co{{F}_{6}}]}^{3-}}$

B) ${{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}$

C) ${{[Fe{{(CN)}_{6}}]}^{3-}}$

D) ${{[Cr{{(N{{H}_{3}})}_{6}}]}^{3+}}$

A) $NO_{2}^{-}$

B) ${{H}_{2}}\overset{\centerdot \centerdot }{\mathop{N}}\,C{{H}_{2}}C{{H}_{2}}\overset{\centerdot \centerdot }{\mathop{N}}\,{{H}_{2}}$

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

D) $_{\centerdot }^{\centerdot }N{{H}_{3}}$

• question_answer84) Which of the following has the highest bond order?

A) ${{N}_{2}}$

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

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

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

• question_answer85) Which of the following is diamagnetic?

A) $H_{2}^{+}$

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

C) $L{{i}_{2}}$

D) $He_{2}^{+}$

• question_answer86) The concentration of a reactant X decreases from $0.1M$to $0.005M$in 40 minute. If the reaction follows 1 order kinetics, the rate of the reaction when the concentration of X is $0.01M$will be:

A) $1.73\times {{10}^{-4}}\text{ }M\,mi{{n}^{-1}}$

B) $3.47\times {{10}^{-4}}\text{ }M\,mi{{n}^{-1}}$

C) $3.47\times {{10}^{-5}}\text{ }M\,mi{{n}^{-1}}$

D) $7.5\times {{10}^{-4}}\text{ }M\,mi{{n}^{-1}}$

• question_answer87) Chemical reactions with very high ${{E}_{a}}$ values are generally:

A) very fast

B) very slow

C) moderately fast

D) spontaneous

• question_answer88) Which of the following does not conduct electricity?

A) $Fused\text{ }NaCl$

B) $Solid\text{ }NaCl$

C) Brine solution

D) Copper

• question_answer89) When a quantity of electricity is passed through $CuS{{O}_{4}}$solution, $0.16g$of copper gets deposited. If the same quantity of electricity is passed through acidulated water, then the volume of ${{H}_{2}}$ liberated at STP will be: [given: atomic weight of $Cu=64$]

A) $4.0c{{m}^{3}}$

B) $56c{{m}^{3}}$

C) $604c{{m}^{3}}$

D) $8.0c{{m}^{3}}$

• question_answer90) Solubility product of a salt AS is $1\times {{10}^{-8}}\text{ }{{M}^{2}}$in a solution in which the concentration of ${{A}^{+}}$ ions is ${{10}^{-3}}M$. The salt will precipitate when the concentration of ${{B}^{-}}$ ions is kept:

A) between ${{10}^{-8}}M$to ${{10}^{-7}}M$

B) between ${{10}^{-7}}M$ to ${{10}^{-8}}M$

C) $>{{10}^{-5}}M$

D) $<{{10}^{-5}}M$

• question_answer91) Which one of the following condition will increase the voltage of the cell represented by die equation? $Cu(s)+2A{{g}^{+}}(aq)C{{u}^{2+}}(aq)+2Ag(s)$

A) Increase in the dimension of $Cu$ electrode

B) Increase in the dimension of $Ag$ electrode

C) Increase in the concentration of Curious

D) Increase in the concentration of $A{{g}^{+}}$ ions

• question_answer92) The pH of ${{10}^{-8}}M\text{ }HCl$solution is:

A) 8

B) More than 8

C) Between 6 and 7

D) Slightly more than 7

• question_answer93) The mass of glucose that should be dissolved in $50g$of water in order to produce the same lowering of vapour pressure as is produced by dissolving $1g$of urea in the same quantity of water is:

A) $1g$

B) $3g$

C) $6g$

D) $18g$

• question_answer94) Osmotic pressure observed when benzoic acid is dissolved in benzene is less than that expected from theoretical considerations. This is because:

A) benzoic acid is an organic solute

B) benzoic acid has higher molar mass than benzene

C) benzoic acid gets assoicated in benzene

D) benzoic acid gets dissociated in benzene

• question_answer95) For a reaction to be spontaneous at all temperatures:

A) $\Delta G$ and $\Delta H$ should be negative

B) $\Delta G$ and $\Delta H$ should be positive

C) $\Delta G=\Delta S=0$

D) $\Delta H<\Delta G$

• question_answer96) Which of the following electrolyte will have maximum flocculation value for $Fe{{(OH)}^{3}}$sol?

A) $NaCl$

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

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

D) ${{K}_{2}}S{{O}_{4}}$

• question_answer97) For a reversible reaction: $X(g)+3Y(g)2Z(g);$ $\Delta H=-40kJ$ The standard entropies of X, Y and Z are 60, 40 and $50~J{{K}^{-1\text{ }}}mo{{l}^{-1}}$respectively. The temperature at which the above reaction attains equilibrium is about:

A) $400K$

B) $500K$

C) $273K$

D) $373K$

• question_answer98) The radii of $N{{a}^{+}}$ and $C{{l}^{-}}$ ions are 95 pm and 181 pm respectively. The edge length of $NaCl$unit cell is:

A) $276pm$

B) $138pm$

C) $552pm$

D) $415pm$

A) Displacement of $\sigma$-electrons

B) Delocalisation of $\pi$-electrons

C) Delocalisation of $\sigma$-electrons

D) Displacement of $\pi$-electrons

• question_answer100) The basicity of aniline is less than that of cyclohexylamine. This is due to:

A) $+R-effect$of $-N{{H}_{2}}$ group

B) $-I\,effect$ of $-N{{H}_{2}}$ group

C) $-\operatorname{Re}\,effect$of $-N{{H}_{2}}$ group

D) hyper conjugation effect

• question_answer101) Methyl bromide is converted into ethane by heating it in ether medium with:

A) $Al$

B) $Zn$

C) $Na$

D) $Cu$

• question_answer102) Which of the following compound is expected to be optically active?

A) ${{(C{{H}_{3}})}_{2}}CHCHO$

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

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

D) $C{{H}_{3}}C{{H}_{2}}CB{{r}_{2}}CHO$

• question_answer103) Which cycloalkane has the lowest heat of combustion per $C{{H}_{2}}$ group?

A) Cyclopropane

B) Cyclobutane

C) Cyclopentane

D) Cyclohexane

• question_answer104) The catalyst used in the preparation of an alkyl chloride by the action of dry $HCl$ on an alcohol is:

A) anhydrous $AlC{{l}_{3}}$

B) $FeC{{l}_{3}}$

C) anyhydrous $ZnC{{l}_{2}}$

D) $Cu$

• question_answer105) In the reaction, $R-X\xrightarrow{alcoholic\,KCN}A\xrightarrow{dilute\,HCl}B$ The product B is:

A) alkyi chloride

B) aldehyde

C) carboxyiic acid

D) ketone

• question_answer106) Which of the following compound would not evolve $C{{O}_{2}}$ when treated with $NaHC{{O}_{3}}$solution?

A) Salicylic acid

B) Phenol

C) Benzoic acid

D) 4-nitrobenzoic acid

• question_answer107) By heating phenol with chloroform in alkyl, it is converted into:

A) Salicylic acid

B) Salicylaldehyde

C) Anisole

D) Phenyl benzoate

• question_answer108) When a mixture of calcium benzoate and calcium acetate is dry distilled, the resulting compound is:

A) Acetophenone

B) Benzaldehyde

C) Benzophenone

D) Acetaldehyde

• question_answer109) Which of the following does not give benzoic acid on hydrolysis?

A) Phenyl cyanide

B) Benzoyl chloride

C) Benzyl chloride

D) Methyl benzoate

• question_answer110) Which of the following would undergo Hofmann reaction to give a primary amine?

A) $R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-Cl$

B) $RCONHC{{H}_{3}}$

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

D) $RCOOR$

A) one secondary $OH$ and four primary $OH$groups

B) one primary $OH$ and four secondary $OH$groups

C) two primary $OH$ and three secondary $OH$groups

D) three primary $OH$ and two secondary $OH$ groups

• question_answer112) A distinctive and characteristic functional group of fats is

A) apeptide group

B) an ester group

C) an alcoholic group

D) a ketonic group

• question_answer113) At pH = 4, glycine exists as:

A) ${{H}_{3}}N-C{{H}_{2}}-CO{{O}^{-}}$

B) ${{H}_{3}}N-C{{H}_{2}}-COOH$

C) ${{H}_{2}}N-C{{H}_{2}}-COOH$

D) ${{H}_{2}}N-C{{H}_{2}}-CO{{O}^{-}}$

• question_answer114) Insulin regulates the metabolism of:

A) minerals

B) ammo acids

C) glucose

D) vitamins

• question_answer115) The formula mass of Mohrs salt is 392. The iron present in it is oxidised by $KMn{{O}_{4}}$in acid medium. The equivalent mass of Mbhrs salt is:

A) $392$

B) $31.6$

C) $278$

D) $156$

• question_answer116) The brown ring test for nitrates depends on:

A) The reduction of nitrate to nitric oxide

B) oxidation of nitric oxide to nitrogen dioxide

C) reduction of ferrous sulphate to iron

D) oxidising action of sulphuric acid

• question_answer117) Acrolein test is positive for:

A) Polysaccharides

B) proten

C) oils and fats

D) reducing sugars

• question_answer118) An organic compound which produces a bluish green colored flame on heating in presence of copper is:

A) chlorobenzene

B) benzaldenhyde

C) aniline

D) benzoic acid

• question_answer119) For a reaction $A+B\xrightarrow{{}}C+D$ if the concentration of A is doubled without altering the concentration of B, the rate gas doubled. If the concentration of B is increased by nine times without altering the concentration of A, the rate gets tripled. The order of the reaction is:

A) $2$

B) $1$

C) $3/2$

D) $4/3$

• question_answer120) Which of the following solutions will exhibit highest boiling point?

A) $0.01M\,N{{a}_{2}}S{{O}_{4}}(aq)$

B) $0.01M\,KN{{O}_{3}}(aq)$

C) $0.015M$ urea (aq)

D) $0.015M$glucose (aq)

• question_answer121) Which of the following hormones are produced in the hypothalamus and stored in the posterior pituitary?

A) FSH and LH

C) TSH and STH

D) ACTH and MSH

• question_answer122) Two pea plants were subjected cross pollination. Of the 183 plants produced in the next generation, 94 plants were found to be tall and 89 plants were found to be dwarf. The genotypes of the two parental plants are likely to be:

A) TT and tt

B) Tt and Tt

C) Tt and tt

D) TT and TT

• question_answer123) Monoclonal antibodies are produced from hybrid cells, called hybridomas. The cells employed to obtain these hybridoma cells, are:

A) B - lymphocytes and myeloma cells

B) lymphoma cells and bone marrow cells

C) T - lymphocytes and myeloma cells

D) B - lymphocytes and carcinoma cells

• question_answer124) Read the two statements A and B Statement A: Diversity observed in the entire geographical area, is called gamma diversity. Statement B: Biodiversity decreases from high altitude to low altitude. Identify the correct choice from those given below:

A) statement A is correct, B is wrong

B) statement B is correct, A is wrong

C) both the statements A and B are correct

D) both the statements A and B are wrong

• question_answer125) The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is:

A) replication of the genetic material

B) splitting of the chromatids

C) splitting of the centromeres

D) condensation of the chromatin

• question_answer126) In the synthesis of which of the following, the DNA molecule is not directly involved?

A) m-RNA molecule

B) Protein molecule

C) Another DNA molecule

D) t-RNA molecule

• question_answer127) Chloroplasts without grana are known to occur in:

A) bundle sheath cells of ${{C}_{3}}$plants

B) mesophyll cells of ${{C}_{4}}$plants

C) bundle sheath cells of ${{C}_{4}}$ plants

D) mesophyll cells of all plants

• question_answer128) The main function of lacteals in the human small intestine is the absorption of:

A) glucose and vitamins

B) amino acids and glucose

C) water and vitamins

D) fatty acids and glycerol

• question_answer129) The following diagrams show the types of secondary thickenings in the xylem vessels. Identify the types labelled from A to F. Choose the correct option from those given:

A) A = spiral, B = annular, C = reticulate, D = scalariform, E = pitted with border, P = pitted, simple

B) A = annular, B = spiral, C = scalariform, D = reticulate, E = pitted with border, F = pitted, simple

C) A = annular, B = spiral, C = scalariform, D = reticulate, E = pitted, simple, F = pitted with border

D) A = spiral, B = annular, C = scalariform, D = reticulate, E = pitted with border, F = pitted, simple

• question_answer130) About 1000 ml of air is always known to remain inside the human lungs. It is described as.........

A) inspiratory reserve volume

B) expiratory reserve volume

C) residual volume

D) tidal volume

• question_answer131) The chemical nature of gibberellins is that they are:

A) acidic

B) alkaline

C) proteinaceous

D) amines

• question_answer132) The unit of natural selection is:

A) an individual

B) a species

C) a genus

D) a population

• question_answer133) Water is lost in a liquid state in some plants through hydathods. These hydathodes

A) remain closed at night

B) remain closed during day

C) remain always open

D) do not show any specificity in opening and closing

• question_answer134) Which of the following are secretions produced by the spermatozoa at the time of fertilization?

A) Fertilizin and antifertilizin

B) Antifertilizin and spermlysin

C) Fertilizin and spermlysin

D) Only spermlysin

• question_answer135) Cells obtained from an organism were homogenised and centrifuged. A test indicated that the cells contained glycogen. If you were asked to find out as quickly as possible whether the cells were from a plant or an animal, you would:

A) examine the centrifuge for the presence of extracts of chloroplasts

B) answer immediately that the cells were from a plant source

C) examine the centrifuge for the presence of extracts of centrioles

D) answer immediately that the cells were from an animal source

• question_answer136) Which of the following plant parts can respire even in the absence of oxygen?

A) seeds

B) roots

C) stems

D) leaves

• question_answer137) Column I lists some disorder associated with brain. Column II lists the causes for these disorders. Match the two columns and identify the correct option from those given

 Column I Column II A. Epilepsy 1. Degeneration of neurons in the cerebral cortex B. Alzheimers disease 2. Irregular electrical discharge in the neurons C. D. Parkinsons disease Huntingtons chorea 3. 4. Decreased production of acetylcholine Regeneration of dopamine releasing neurons 5. Formation of blood clots in the brain

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

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

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

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

• question_answer138) The world biodiversity day is celebrated annually on:

A) 5th June

B) 29th December

C) 22nd April

D) 16th September

• question_answer139) The sequence of nitrogen bases in a particular region of the non-coding strand of a DNA molecule was found to be CAT GTT TAT CGC. What would be the sequence of nitrogen bases in the mRNA that is synthesized by the corresponding region of the coding strand in that DNA?

A) GUACAAAUAGCC

B) GTACAAATAGCC

C) CAUGUUUAUCGC

D) CAAGAATAUGCC

• question_answer140) Almost all the aquatic animals excrete ammonia as the nitrogenous waste product. Which of the following statement is not in agreement with this situation?

A) Ammonia is easily soluble in water

B) Ammonia is released from the body in a gaseous state

C) Ammonia is highly toxic and needs to be eliminated as and when formed

D) Ammonia gets converted into a less toxic form called urea

• question_answer141) In nature, cleistogamous flowers are:

A) self pollinated

B) insect pollinated

C) wind pollinated

D) bird pollinated

• question_answer142) In the homeostatic control of blood sugar level, which organs function respectively as modulator and effector?

A) Liver and islets of Langerhans

B) Hypothalamus and liver

C) Hypothalamus and islets of langerhans

D) Islets of langerhans and hypothalamus

• question_answer143) Variable number of tandem repeats (VNTRs) in the DNA molecule are highly useful in:

A) recombinant DNA technology

B) DNA finger printing

C) monoclonal antibody production

D) stem cell culture

• question_answer144) Which of the following represents a condition where the motility of the sperms is highly reduced?

A) Oligospermia

B) Athenospermia

C) Azoospermia

D) Polyspermy

• question_answer145) Identify from the following, the only taxonomic category that has a real existence:

A) genus

B) species

C) phylum

D) kingdom

• question_answer146) Which of the following is used as an antitranspirant?

A) Cobalt chloride

B) Naphthol acetic acid

C) Calcium carbonate

D) Phenyl mercuric acetate

• question_answer147) Maximum amount of oxygen is lost from the blood in the:

A) capillaries surrounding the tissue cells

B) arteries of the body

C) capillaries surrounding the alveoli

D) left auricle of the heart

• question_answer148) In which of the following disorders, blood has a defective haemoglobin?

A) Haemophilia

B) Haematuria

C) Haematoma

D) Sickle cell anaemia

• question_answer149) The common point of attachment of all the arms of polytene chromosomes, is known as:

A) chromomere

B) centromere

C) chromocentre

D) centrosome

• question_answer150) The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given:

A) A = amylase, B = maltase, C = lactase, D = invertase

B) A = amylase, B = Maltase, C = invertase, D = lactase

C) A = amylase, B = invertase, C = maltase, D = lactase

D) A = amylase, B = lactase, C = maltase, D = invertase

• question_answer151) As secondary growth proceeds, in a dicot stem, the thickness of:

A) sapwood increases

B) heartwood increases

C) both sapwood and heartwood increases

D) both sapwood and heartwood remains the same

• question_answer152) Which of the following animal can successfully reproduce without utilizing the process of mitosis?

A) Amoeba

B) Hydra

C) Tapeworm

D) Sycon

• question_answer153) The synthesis of one molecule of glucose during Calvin cycle requires

A) 12 molecules of ATP and 18 molecules of $NADP{{H}_{2}}$

B) 6 molecules of ATP and 12 molecules of $NADP{{H}_{2}}$

C) 18 molecules of ATP and 12 molecules of $NADP{{H}_{2}}$

D) 12 molecules each of ATP and $NADP{{H}_{3}}$

• question_answer154) Which of the following was likely to have been absent in a free molecular state, in the primitive atmosphere of the earth?

A) Carbon

B) Oxygen

C) Hydrogen

D) Nitrogen

• question_answer155) In the members of family Malvaceae, anthers are described as:

• question_answer156) In the operon system, the represser protein can bind only with the:

A) structural genes

B) regulator gene

C) operator gene

D) promoter gene

• question_answer157) The following is a diagram of the just spawned frogs egg; with the parts labelled from A to E. Identify the parts and choose the correct option from those given below.

A) A = cytoplasm, B = plasma membrane, C = vitelline membrane, D = yolk, E = jelly coat

B) A = cytoplasm, B = vitelline membrane, C = plasma membrane, D = Yolk, E = Jelly coat

C) A = yolk, B = plasma membrane, C = vitelline membrane, D = cytoplasm, E = jelly coat

D) A = yolk, B = jelly coat, C = vitelline membrane, D = cytoplasm, E = plasma membrane

• question_answer158) The rate of transpiration will be very less in a situation where:

A) ground water is sufficiently available

B) wind is blowing with a very high velocity

C) environment is very hot and dry

D) relative humidity is very high

• question_answer159) Column I lists the components of body defense and column II lists the corresponding descriptions. Match the two columns. Choose the correct option from those given:

 Column - I Column - II A. Active natural immunity 1. Injection of gamma globulins B. First line of defense 2. Complement proteins and interferons C. Passive natural immunity 3. Direct contact with the pathogens that have entered inside D. Second line of defense 4. Surface barriers 5. Antibodies transferred through the placenta

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

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

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

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

• question_answer160) Which of die following is not an influence of auxins?

A) apical dominance

B) parthenocarpy

C) tropic movements

D) bolting

• question_answer161) How many double circulations are normally completed by the human heart, in one minute?

A) eight

B) sixteen

C) seventy two

D) thirty six

• question_answer162) Casparian thickening are found in the cells of:

A) pericycle of the root

B) endodermis of the root

C) pericycle of the stem

D) endodermis of the stem

• question_answer163) Botli photosynthesis and respiration required:

A) mitochondria

B) sunlight

C) chloroplasts

D) cytochromes

• question_answer164) Which of the following regions of our country are known for their rich biodiversity?

A) Western ghats and Eastern Himalayas

B) Western ghats and deccan plateau

C) Eastern himalayas and gangetic plane

D) Trans himalayas and deccan peninsula

• question_answer165) Restriction endonucleases are most widely used in recombinant DNA technology. They are obtained from:

A) bacteriophages

B) bacterial cells

C) plasmids

D) all prokaiyotic cells

• question_answer166) The ${{F}_{2}}$generation offspring in a plant showing incomplete dominance, exhibit:

A) variable genotypic and phenotypic ratio

B) a genotypic ratio of 1 : 1

C) a phenotypic ratio of 3 : 1

D) similar phenotypic and genotypic ratio of 1 : 2 : 1

• question_answer167) Identify the correct statement with reference to transport of respiratory gases by blood?

A) haemoglobin is necessary for transport of carbon dioxide and carbonic anhydrase for transport of oxygen

B) haemoglobin is necessary for transport of oxygen and carbonic anhydrase for transport of carbon dioxide

C) only oxygen is transported by blood

D) only carbon dioxide is transported by blood

• question_answer168) In the angiospenn ovule, central cell of the embryo sac, prior to the entry of pollen tube, contains:

A) a single haploid nucleus

B) one diploid and one haploid nuclie

C) two haploid polar nuclei

D) one diploid secondary nucleus

• question_answer169) Read the two statements A and B Statement A: The number of mitochondria in a cell do not correspond to the function of the cell. Statement B: Mitochondria are common to both plant and animal cells. Choose the correct option from those given

A) statement A is correct, B is wrong

B) statement B is correct, A is wrong

C) both the statement A and B are correct

D) both the statements A and B are wrong

• question_answer170) Which of the following birth control measure can be considered as the safest?

A) The rhythm method

B) The use of physical barriers

C) Termination of unwanted pregnancy

D) Sterilization techniques

• question_answer171) What is the common point of similarity between DNA and RNA?

A) Both are double stranded

B) Both have identical sugar molecules

C) Both have identical pyrimidine bases

D) Both are polymers of nucleotides

• question_answer172) The following is a simplified scheme showing the fate of glucose during aerobic and anaerobic respiration. Identify the end products that are formed at stagtes indicated as A, B, C, and D. Identify the correct option from those given below:

A) A = carbon dioxide and water, B = pyruvic acid, C = ethyl alcohol and carbon dioxide, D = lactic acid

B) A = pyruvic acid, B = carbon dioxide and water, C = lactic acid, D = ethyl alcohol and carbon dioxide

C) A = pyruvic acid, B = carbon dioxide and water, C = ethyl alcohol and carbon dioxide, D = lactic acid

D) A = pyruvic acid, B = ethyl alcohol and carbon dioxide, C = lacdc acid, D = carbon dioxide and water

• question_answer173) Identify the correct relationship with reference to water potential of a plant cell:

A) ${{\psi }_{w}}={{\psi }_{m}}+{{\psi }_{s}}+{{\psi }_{p}}$

B) ${{\psi }_{w}}={{\psi }_{m}}+{{\psi }_{s}}-{{\psi }_{p}}$

C) ${{\psi }_{w}}={{\psi }_{m}}-{{\psi }_{s}}+{{\psi }_{p}}$

D) ${{\psi }_{w}}={{\psi }_{m}}-{{\psi }_{s}}-{{\psi }_{p}}$

• question_answer174) Bioinfonnatics is an interdisciplinary branch which is concerned with the application of:

A) engineering techniques in biological studies

B) chemistry in understanding the biological phenomenon

C) physics in understanding various life processes

D) information science in analysing the biological data

• question_answer175) The highly degraded organic matter rich in nitrogen and potassium in particular resulting from the activity of earthworms, is called:

A) worm castings

B) vermicompost

C) compost bedding

D) humus

• question_answer176) Identify from the following examples, a fungus which is of medicinal importance?

A) Agaricus

B) Saccharomyces

C) Penicillium

D) Cercospora

• question_answer177) Passive absorption of water by the root system is the result of:

A) forces created in the cells of the root

B) increased respiratory activity in root cells

C) tension on the cell sap due to transpiration

D) Osmotic force in the shoot system

• question_answer178) Which of the following character is exclusive to mammals?

A) Presence of a four chambered heart

B) Homeothermic condition

C) Respiration by lungs

D) Presence of a diaphragm

• question_answer179) All the terminator codons begin with the nucleotide of:

B) uracil

C) guanine

D) cytosine

• question_answer180) Column I lists the endocrine structure and column II lists the corresponding hormones. Match the two columns. Identify the correct option from those given:

 Column I Column II A. Hypothalamus 1. Relaxin B. Anterior pituitary 2. Estrogen C. Testis 3. FSH and LH D. Ovary 4. Androgens 5. Gonadotropin releasing hormone

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

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

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

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