# Solved papers for AMU Medical AMU Solved Paper-1997

### done AMU Solved Paper-1997

• question_answer1) A uniform circular disc of mass 12 kg is held by two identical springs as shown in the figure. When the disc is pressed down slightly and released, it executes SHM with a time period of 2 s. The force constant of each spring is A) $236.6\text{ }N{{m}^{-1}}$

B) $118.3\text{ }N{{m}^{-1}}$

C) $59.15N{{m}^{-1}}$

D) none of the above

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• question_answer2) A cyclist bends, while taking turn, to

A) reduce friction

B) generate required centrifugal force

C) reduce apparent weight

D) reduce speed

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• question_answer3) Consider two unequal masses${{m}_{2}}>{{m}_{1}}$connected by a string which passes over a frictionless and massless pulley. The tension T in the string is

A) $T=2\frac{m_{1}^{2}+m_{2}^{2}}{{{m}_{1}}+{{m}_{2}}}g$

B) $T=\frac{2{{m}_{1}}{{m}_{2}}}{{{m}_{1}}+{{m}_{2}}}g$

C) $T=\frac{2m_{2}^{2}+m_{1}^{2}}{{{m}_{1}}+{{m}_{2}}}g$

D) $T=2({{m}_{1}}+{{m}_{2}})g$

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• question_answer4) For motion in a plane with constant acceleration a initial velocity ${{\overrightarrow{v}}_{0}}$ and final velocity$\overrightarrow{v}$after time$t$we have

A) $\overrightarrow{v}.(\overrightarrow{v}.\overrightarrow{a}t)={{\overrightarrow{v}}_{0}}({{\overrightarrow{v}}_{0}}+\overrightarrow{a}t)$

B) $\overrightarrow{v}.{{\overrightarrow{v}}_{0}}={{a}^{2}}{{t}^{2}}$

C) $\overrightarrow{v}.{{\overrightarrow{v}}_{0}}=\overrightarrow{a}.{{\overrightarrow{v}}_{0}}t$

D) ${{\overrightarrow{v}}_{0}}.{{\overrightarrow{v}}_{0}}=\overrightarrow{a}.{{\overrightarrow{v}}_{0}}$

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• question_answer5) A torch is switched on and dropped on a reflecting surface g/2 meters below. Initial light beam reaches the torch after getting reflected from the polished surface and is reflected back by the torch, and so on. If speed of light is c then total distance covered by the initial beam of light is

A) g

B) g/2

C) c

D) c/2

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• question_answer6) The potential energy function of a particle executing linear simple harmonic motion is given by $U(x)=\frac{1}{2}k{{x}^{2}},$where k the force constant of the oscillator is equal to$0.5\text{ }N{{m}^{-1}}$. The amplitude of the particle when its total energy is 1 J is equal to

A) $2\sqrt{2}m$

B) 2m

C) $\sqrt{2}m$

D) none of the above

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• question_answer7) A man mass 60 kg records his weight on a weighing machine placed inside a lift. The ratio of the weights of the man recorded when the lift is ascending up with a uniform speed of $2\text{ }m{{s}^{-1}}$to when it is descending down with a uniform speed of$\text{4 }m{{s}^{-1}}$will be

A) 0.5

B) $-1$

C) 2

D) none of the above

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• question_answer8) The speed time graph of a particle moving in a fixed direction is as shown in the figure. The distance traversed by the particle between$t=0$to$t=5\text{ }s$is A) 24 m

B) 30 m

C) 36 m

D) 40 m

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• question_answer9) Units of electric flux are

A) $weber/metr{{e}^{2}}$

B) $newton-metr{{e}^{2}}/coulomb$

C) $joule\times coulomb/metre$

D) tesla

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• question_answer10) The S.I. unit of pole strength is

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

B) $A-m$.

C) $A-{{m}^{-1}}$

D) $A-{{m}^{-2}}$

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• question_answer11) In a streamlined flow if the gravitational head is h, the kinetic and pressure heads are

A) $\frac{1}{2}{{v}^{2}}$and$\frac{P}{\rho }$

B) $\frac{1}{2}\frac{{{v}^{2}}}{g}$and$\frac{P}{\rho g}$

C) $\frac{1}{2}{{v}^{2}}$and$\frac{P}{\rho g}$

D) $\frac{1}{2}\frac{{{v}^{2}}}{g}$and$\frac{P}{\rho }$

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• question_answer12) Which one of the following graphs represents correctly the variation of the intensity of gravitational field$(I)$with the distance (r) from the centre of a spherical shell of mass M and radius a

A) B) C) D) View Answer play_arrow
• question_answer13) A quantity X is defined by the equation $X=3C{{B}^{2}}$where C is capacitance in farad and B represents magnetic field in tesla. The dimensions of$X$are

A) $M{{L}^{-2}}$

B) $M{{L}^{-2}}{{T}^{-1}}A$

C) $M{{L}^{-1}}{{T}^{-2}}{{A}^{2}}$

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

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• question_answer14) Bernouillis equation for steady, non-viscous, incompressible flow expresses the

A) conservation of angular momentum

B) conservation of density

C) conservation of momentum

D) conservation of energy

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• question_answer15) Velocity of sound in air is$320\text{ }m{{s}^{-1}}$. A pipe closed at one end has a length of 1m. (Neglecting ends corrections). The air column in the pipe cannot resonate for sound of frequency

A) 80 Hz

B) 240 Hz

C) 320 Hz

D) 400 Hz

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• question_answer16) A particle in S.H.M. is described by the displacement function $x(t)=A\cos (\omega t+\phi ),\omega =\frac{2\pi }{T}$ If the initial$(t=0)$position of the particle is 1 cm, its initial velocity is n$cm\text{ }{{s}^{-1}}$and its angular frequency is$n\text{ }{{s}^{-1}},$then the amplitude of its motion is

A) $\pi \,cm$

B) $2\,cm$

C) $\sqrt{2}\,cm$

D) $1\,cm$

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• question_answer17) Equation$y={{y}_{m}}\sin (kx+\omega t)$represents a wave

A) travelling in$y-$direction

B) travelling in negative$y-$direction

C) travelling in$y-$direction

D) travelling in negative$y-$direction

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• question_answer18) To double the translational kinetic energy of the molecules of a gas one has to

A) double the absolute temperature

B) reduce the absolute temperature to half

C) increase the absolute temperature fourfold

D) increase the absolute temperature by a factor of $\sqrt{2}$

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• question_answer19) The first law of thermodynamics, which accounts for the conservation of energy, is valid

A) only for reversible processes

B) only for irreversible processes

C) for both of the above two processes

D) for none of the above processes

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• question_answer20) A comet orbits the sun in highly elliptical orbit. Which of the following quantities remains unchanged throughout its orbit? (Neglect any mass loss of the comet when it comes very close to the sun)

A) torque

B) potential energy

C) kinetic energy

D) areal speed

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• question_answer21) Two bulbs when connected in parallel to a source take 60 W each. The total power consumed when they are connected in series with the same source is

A) 15 W

B) 30 W

C) 60 W

D) 120 W

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• question_answer22) A rectangular loop carrying a current$i$is situated near a long straight wire, such that the wire is parallel to one of he sides of the loop and is in the plane of the loop. If a steady current$I$is established in the wire as shown in the diagram, the loop will A) move away from the wire

B) rotate about an axis parallel to wire

C) remain stationary

D) move towards the wire

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• question_answer23) In a voltameter the conduction takes place due to

A) electrons only

B) electrons and holes

C) holes only

D) electrons and ions

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• question_answer24) A constant voltage is applied between two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if

A) both the length and the radius of the wire are doubled

B) both the length and the radius of the wire are halved

C) the radius of the wire is doubled

D) the length of the wire is doubled

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• question_answer25) A magnetic needle placed in a non-uniform magnetic field experiences

A) a force and a torque

B) a torque but not a force

C) a force but not a torque

D) neither a force not a torque

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• question_answer26) In a region of space, the variation of the electric potential$\phi$with distance from the origin is shown in the figure. The electric field strength is zero at A) Point A

B) Point B

C) Point C

D) Point D

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• question_answer27) The instantaneous magnetic flux$\phi$in a circuit is $\phi =4{{t}^{2}}-4t+1$The total resistance of the circuit is $10\,\Omega$. At$t=\frac{1}{2}s,$the induced current in the circuit is

A) 0

B) 0.2 A

C) 0.4 A

D) 0.8 A

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• question_answer28) A circle of radius R is drawn in a uniform electric field E as shown in the figure${{V}_{A}},$${{V}_{B}},{{V}_{C}}$and${{V}_{D}}$are respectively the potentials of points A, B, C and D at the periphery of the circle A) ${{V}_{A}}={{V}_{C}};{{V}_{B}}={{V}_{D}}$

B) ${{V}_{A}}={{V}_{C}};{{V}_{B}}<{{V}_{D}}$

C) ${{V}_{A}}>{{V}_{C}};{{V}_{B}}={{V}_{D}}$

D) ${{V}_{A}}<{{V}_{C}};{{V}_{B}}={{V}_{D}}$

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• question_answer29) If the distance of separation between two charges is increased, the electrical potential energy of the system will

A) increase

B) decrease

C) may increase or decrease

D) remain the same

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• question_answer30) Let Q represent the charge on a parallel plate capacitor and E the electric field between the plates, then each plate of the capacitor experiences a force of magnitude

A) zero

B) $QE$

C) $\frac{1}{2}QE$

D) $2QE$

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• question_answer31) In the Youngs double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width is

A) halved

B) unchanged

C) doubled

D) quadrupled

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• question_answer32) When the light is incident on polarising angle which of the following is completely polarised

A) reflected light

B) both reflected and refracted light

C) refracted light

D) neither reflected nor refracted light

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• question_answer33) Signal from a remote control to the device operated by it travels with the speed of

A) sound

B) light

C) ultrasonics

D) supersonics

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• question_answer34) In spectral radiancy curve for cavity radiation the wavelength of the maximum spectral radiancy

A) increases with temperature increasing

B) decreases with temperature increasing

C) sometimes increases sometimes decreases with increasing temperature

D) remains unaffected by temperature variation

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• question_answer35) For the normal setting of a telescope

A) only the object is at infinity

B) only the final image is at infinity

C) both the object and the final image are at infinity

D) neither the object nor the final image has to be at infinity

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• question_answer36) A beam of light incident on a plane mirror forms a real image on reflection. The incident beam is

A) parallel

B) convergent

C) divergent

D) any of the above type

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• question_answer37) If${{\varepsilon }_{0}}$and${{\mu }_{0}}$are respectively, the electric permittivity and magnetic permeability of free space,$\varepsilon$and$\mu$are the corresponding quantities in a medium the refractive index of the medium is

A) $\sqrt{\frac{\mu \varepsilon }{{{\mu }_{0}}{{\varepsilon }_{0}}}}$

B) $\sqrt{\frac{{{\mu }_{0}}{{\varepsilon }_{0}}}{{{\varepsilon }_{0}}}}$

C) $\frac{\mu \varepsilon }{{{\mu }_{0}}{{\varepsilon }_{0}}}$

D) ${{\left( \frac{\mu \varepsilon }{{{\mu }_{0}}{{\varepsilon }_{0}}} \right)}^{2}}$

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• question_answer38) In the given circuit, the rms value of e is 5V and the rms value of votage drop across L is 3 V. The rms value of the voltage across R will be A) 2V

B) 3 V

C) 4 V

D) 0 V

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• question_answer39) The figure shows the connections of a rheostat with an external battery. A is an ammeter and is a voltmeter. The sliding contact R starts from point P and moves towards the end Q. Which of the following statements is correct? A) both ammeter and voltmeter show constant reading

B) the reading of ammeter remains constant but that of voltmeter increases

C) the reading of ammeter remains constant but that of voltmeter decreases

D) both ammeter and voltmeter reading increases

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• question_answer40) A conducting wire is drawn to double its length. Final resistivity of the material will be

A) double of the original one

B) half of the original one.

C) one-fourth of the original one

D) same as original one

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• question_answer41) A$p-$type semiconductor is

A) positively charged

B) uncharged

C) negatively charged

D) none of the above

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• question_answer42) For the given combination of gates, if the logic states of input A, B, C are as follows$A=B=C=0$and$A=B=1,C=0$then the logic states of output$D$are A) 0, 0

B) 0, 1

C) 1, 0

D) 1, 1

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• question_answer43) A material with overlapping conduction and valence bands will be

A) an insulator

B) a semiconductor

C) a metal

D) a superconductor

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• question_answer44) Assuming that the junction diode is ideal, in the circuit shown here, the current through the diode is

A) zero

B) 1 mA

C) 10 mA

D) 30 Ma

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• question_answer45) When a beta$(\beta )$negative particle is emitted from a radioactive nucleus, the ratio of the number of neutrons to the number of protons in the resulting nucleus

A) decreases

B) remains same

C) increases

D) none of the above

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• question_answer46) An electron starts from rest in an electric field and acquires a speed u in reaching a point A. The potential difference between the starting point and the point A is${{V}_{A}}$

A) $u\propto V_{A}^{2}$

B) $u\propto {{V}_{A}}$

C) $u\propto \sqrt{{{V}_{A}}}$

D) $u\propto V_{A}^{2/3}$

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• question_answer47) The binding energy per nucleon for deuteron$(_{1}^{2}H)$and helium$(_{2}^{4}He)$are 1.1 MeV and 7.0 MeV and 7.0 MeV respectively. The energy released when two deuterons fuse to form a helium nucleus is

A) 2.2 MeV

B) 28 MeV

C) 23.6 V

D) 30.2 MeV

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• question_answer48) The de Broglie wavelength of a particle of mass 1 mg moving with a velocity$1\text{ }m{{s}^{-1}}$will be

A) ${{10}^{3}}h$ metre

B) ${{10}^{5}}h$metre

C) ${{10}^{-3}}h$metre

D) ${{10}^{-5}}h$metre

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• question_answer49) Sodium surface is subjected to ultraviolet and infrared radiations separately and the stopping potential of photoelectrons determined. Then the stopping potential

A) is equal in both cases

B) more when ultraviolet is used

C) more when infrared used

D) may be more or less for ultraviolet depending upon its intensity as compared to the intensity of infrared light

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• question_answer50) An$\alpha$particle and a proton having same momentum enter into a region of uniform magnetic field and move in circular paths. The ratio of the radii of curvature of their paths,$\frac{{{r}_{\alpha }}}{{{r}_{p}}}$, in the field is

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

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

C) 1

D) 4

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• question_answer51) Which of the following is not a transition metal?

A) $Cr$

B) $Mn$

C) $Sn$

D) $Cu~$

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• question_answer52) Copper reacts with hot cone.${{H}_{2}}S{{O}_{4}}$to give

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

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

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

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

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• question_answer53) What is the approximate percentage of${{H}_{2}}{{O}_{2}}$ in a sample labelled as 10 vol?

A) 10%

B) 9%

C) 3%

D) 1%

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• question_answer54) Addition of$HgC{{l}_{2}}$to$SnC{{l}_{2}}$gives a brown black colour which is due to the

A) formation of amalgam

B) oxidation of tin

C) oxidation of mercury

D) reduction of mercury

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• question_answer55) Name the compound${{O}_{2}}Pt{{F}_{6}}$.

A) oxygenyl fluoroplatinate (IV)

B) dioxygenyl fluoroplatinate (V)

C) dioxygenyl hexafluoroplatinate (IV)

D) dioxygenyl hexafluoroplatinate (V)

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• question_answer56) A gas has a volume of 15 ml at 300 K and 740 mm of Hg. Find the temperature if volume becomes 10 ml at 760 mm pressure of Hg.

A) 205 K

B) 209 K

C) 275 K

D) $-200\text{ }K$

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• question_answer57) Which one of the following is the strongest acid?

A) $Cl{{O}_{3}}(OH)$

B) $Cl{{O}_{2}}(OH)$

C) $HCl$

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

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• question_answer58) Phosphorus on reaction with cone$HN{{O}_{3}}$yields

A) $HP{{O}_{3}}$

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

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

D) ${{N}_{2}}{{O}_{5}}$

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• question_answer59) Malachite is a mineral of

A) $Mg$

B) $Cu$

C) $Al$

D) $Fe$

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• question_answer60) Which is the correct decreasing order of bond angle in the following series?

A) $N{{H}_{3}}>{{H}_{2}}O>{{H}_{2}}S$

B) ${{H}_{2}}S>N{{H}_{3}}>{{H}_{2}}O$

C) ${{H}_{2}}S>{{H}_{2}}O>N{{H}_{3}}$

D) ${{H}_{2}}O>N{{H}_{3}}>{{H}_{2}}S$

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• question_answer61) Which profile is a true representation of chemosorption?

A) B) C) D) View Answer play_arrow
• question_answer62) A process for converting a precipitate into a colloidal solution is known as

A) coagulation

B) peptization

C) dialysis

D) ozonolysis

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• question_answer63) When river water meets sea water delta formation takes place. This is due to the phenomenon of

A) electrophoresis

B) dialysis

C) coagulation

D) adsorption

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• question_answer64) 1.5 g of a substance when dissolved in 60 g water lowered the freezing point by$0.136{}^\circ C$. Calculate the molecular weight of the substance when depression constant of water is 1.86.

A) 329.1

B) 439.5

C) 341.9

D) 335.9

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• question_answer65) Consider the modes of transformations of a gas from state A to state B as shown in the following P-V diagram Which one of the following is true? A) $\Delta H=q$along$A\to C$

B) $\Delta S$is same along both$A\to B$and $A\to C\to B$

C) $w$is same along both$A\to B$and$A\to C\to B$

D) $w>0$along both$A\to B$and$A\to C$

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• question_answer66) Sulphur tetrafluoride molecule is

A) square planar

B) octahedral

C) tetrahedral

D) trigonal bipyramidal with a lone pair in the equatorial position

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• question_answer67) The types of bonds present in$CuS{{O}_{4}}.5{{H}_{2}}O$ are only

A) electrovalent and covalent

B) electrovalent and coordinate-covalent

C) electrovalent, covalent and coordinate covalent

D) electrovalent, covalent and hydrogen

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• question_answer68) The ionisation potential for hydrogen atom is 13.6 eV, the ionisation potential for the$H{{e}^{+}}$is

A) 54.4 eV

B) 6.8 eV

C) 13.6eV

D) 24.5 eV

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• question_answer69) Molecular shape of$P{{F}_{5}}$is

A) square planar

B) trigonal bipyramidal

C) tetrahedral three-dimensional

D) octahedral three-dimensional

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• question_answer70) Which is not formed in a reaction of potassium permanganate with${{H}_{2}}S{{O}_{4}}$?

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

B) $MnS{{O}_{4}}$

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

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

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• question_answer71) Consider the following half cell reactions: $C{{u}^{2+}}+2{{e}^{-}}=Cu$ $E_{C{{u}^{2+}}/Cu}^{o}=0.34\,V$ $A{{g}^{+}}+{{e}^{-}}=Ag$ $E_{A{{g}^{+}}/Ag}^{o}=0.80\,V$ Which one of the following is true?

A) copper can displace silver from$AgN{{O}_{3}}$solution

B) silver can displace copper from$Cu{{(N{{O}_{3}})}_{2}}$solution

C) silver is more reactive than copper

D) $C{{u}^{2+}}/Cu$and$A{{g}^{+}}/Ag$with positive$E{}^\circ$values cannot be coupled to form a Galvanic cell

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• question_answer72) The maximum work which a system can perform at constant temperature and pressure equals

A) $q-\Delta E$

B) $\Delta H-\Delta E$

C) $P\Delta V-\Delta G$

D) $(-\Delta G)$

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• question_answer73) The equation$\Delta G=\Delta H-T\Delta S$is for

A) open system

B) closed system

C) isolated system

D) for all the above

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• question_answer74) If the melting point of ice is$0{}^\circ C$and latent heat of fusion is$5.46\text{ }KJ\text{ }mo{{l}^{-1}},$ the entropy change for the conversion of 18 g of ice to water at 1 atm is

A) zero

B) $20\text{ }J{{K}^{-1}}$

C) $50\text{ }J{{K}^{-1}}$

D) $\text{360 }J{{K}^{-1}}$

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• question_answer75) During the crystallization of a solid from the aqueous solution, the following statement is correct$(\Delta H=-ve)$

A) $\Delta H=T\Delta S$

B) $\Delta H>T\Delta S$

C) $\Delta H<T\Delta S$

D) none of the above

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• question_answer76) The$p{{K}_{a}}$of acetyl salicylic acid (aspirin) is 3.5. The pH of gastric juice in human stomach is around 2 and the pH in small intestine is around 8. Aspirin will be

A) unionized in stomach as well as in intestine

B) ionized in stomach as well as in intestine

C) unionized in stomach but ionized in intestine

D) ionized in stomach but unionized in intestine

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• question_answer77) In the reaction$A+B\rightleftharpoons 2C,$the initial concentrations of A and B are 1.0 and 2.0 mol $li{{t}^{-1}}$respectively. If at equilibrium the concentration of C is 0.4 mol$li{{t}^{-1}}$, the value of equilibrium constant is

A) 0.028

B) 0.111

C) 0.166

D) 0.200

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• question_answer78) If a 0.00001 molar solution of$HCl$is diluted thousand folds the pH of the resulting solution will be

A) 5

B) 7

C) 8

D) 6.98

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• question_answer79) The conjugate acid of${{(C{{H}_{3}})}_{2}}NH$is

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

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

C) ${{(C{{H}_{3}})}_{2}}{{N}^{+}}$

D) ${{(C{{H}_{3}})}_{2}}NH_{2}^{+}$

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• question_answer80) Which of the following solution has the highest osmotic pressure?

A) $0.1\text{ }M\text{ }HCl$

B) 0.1 M urea

C) $0.1\,M\,BaC{{l}_{2}}$

D) 0.1 M glucose

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• question_answer81) Which one of the following is a trihydric alcohol containing only secondary hydroxyl groups?

A) $\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,$

B) $C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}$

C) $C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ HO \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}-OH$

D) $\underset{\begin{smallmatrix} | \\ HO \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix} | \\ HO \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}$

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• question_answer82) Which one of the following compounds is likely to be optically active?

A) $C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}$

B) C) $C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}$

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• question_answer83) Carbon carbon length is the shortest in

A) ethane

B) ethene

C) ethyne

D) benzene

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• question_answer84) Nitrogen in an organic compound can be estimated by

A) Kjeldahl method

B) Carius method

C) Victor Meyers method

D) Lassaignes method

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• question_answer85) Which one has a chiral centre?

A) 2-methylpentane

B) 3-methylpentane

C) 2, 3-dimethylpentane

D) 2, 3, 4-trimethylpentane

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• question_answer86) How much copper is supposed to be deposited when a current of 0.75 amperes passes through a copper sulphate solution for 25 minutes?

A) 0.34 g

B) 0.33 g

C) 0.35 g

D) ( d) 0.37 g

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• question_answer87) Which of the following metals will not react with solution of$CuS{{O}_{4}}$?

A) $Fe$

B) $Zn$

C) $Mg$

D) $Ag$

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• question_answer88) The decay from$_{92}^{235}U$to$_{82}^{211}Pb$involves the emission of

A) $2\alpha$ and$6\beta$particles

B) $5\alpha$ and$6\beta$particles

C) $6\alpha$ and$2\beta$particles

D) $10\alpha$ and$6\beta$particles

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• question_answer89) In the reaction$_{1}^{2}H+_{1}^{2}H\to _{2}^{4}He,5.5\times {{10}^{8}}$K cal/mole of energy is produced. Calculate the energy per gram of He

A) $5.50\times {{10}^{8}}K.cal$

B) $1.10\times {{10}^{8}}K.cal$

C) $2.75\times {{10}^{8}}K.cal$

D) $1.37\times {{10}^{8}}K.cal$

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• question_answer90) The missing particle in the radioactive decay is$_{15}^{30}P\xrightarrow[{}]{{}}\,_{14}^{30}Si+?$

A) electron

B) hydrogen atom

C) positron

D) neutron

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• question_answer91) $R\,C{{H}_{2}}\,C{{H}_{2}}\,CN$can be easily obtained by which of the following reaction?

A) $RCH=C{{H}_{2}}+HCN$

B) $R\,C{{H}_{2}}C{{H}_{3}}+HCN$

C) $R\,C{{H}_{2}}C{{H}_{2}}-Br+KCN$

D) $R\,C{{H}_{2}}-CON{{H}_{2}}+{{P}_{2}}{{O}_{5}}$

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• question_answer92) Which one of the following chemicals can be used in the preparation of paracetamol?

A) B) C) D) View Answer play_arrow
• question_answer93) Ethyne can be oxidised to oxalic acid by using

A) chromic acid

B) alkaline$KMn{{O}_{4}}$

C) hypochlorous acid

D) all reagents

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• question_answer94) Enzymes are essential as bio-catalysts. They function well in

A) aqueous medium, temp$\simeq 30-35{}^\circ C;pH\simeq 7$

B) organic medium (solvent)

C) aqueous medium in extreme pH conditions

D) none of them

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• question_answer95) Which compound/set of compounds is used in the manufacture of Nylon 6?

A) $HOOC(C{{H}_{2}})COOH+N{{H}_{2}}{{(C{{H}_{2}})}_{6}}N{{H}_{2}}$

B) C) D) $C{{H}_{2}}=CH-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}$

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• question_answer96) In the reaction This reactive species (most likely) is

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

B) $NO_{2}^{+}$

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

D) None of these

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• question_answer97) Identify the compound which has a nitro group in it

A) $C{{H}_{3}}-O-N=O$

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

D) View Answer play_arrow
• question_answer98) Which reagent is effective in direct conversion of a carboxylic group with a$1{}^\circ -$ alcoholic group? $(-COOH\to -C{{H}_{2}}OH)$

A) Na-Ethanol

B) $NaB{{H}_{4}}$

C) Catalytic hydrogenation

D) $LiAl{{H}_{4}}$

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• question_answer99) For the preparation of t-butyl methyl ether which one of the following methods should be recommended?

A) $C{{H}_{3}}Br+\overset{+}{\mathop{Na}}\,\overline{O}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}$

B) $C{{H}_{3}}\overline{O}\overset{+}{\mathop{Na}}\,+C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}}\,-Br$

C) $C{{H}_{3}}OH+HO-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}\xrightarrow[{}]{conc/{{H}_{2}}S{{O}_{4}}}$

D) $C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}}\,-Br+C{{H}_{3}}OH\xrightarrow[{}]{\overset{-}{\mathop{HO}}\,\overset{+}{\mathop{Na}}\,}$

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• question_answer100) Reaction of phenol with$CC{{l}_{4}}$and$NaOH$ followed by hydrolysis is likely to give

A) B) C) D) View Answer play_arrow
• question_answer101) Municipal waste, containing human and animal excreta, food residues, detergents etc. and rich in bacteria and organic substances, is called

A) sewage

B) sewer

C) sewerage

D) none of these.

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• question_answer102) BOD stand for

A) bacterial overgrowth database

B) biological oxygen demand

C) biological and organic diversity

D) none of the above.

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• question_answer103) The pulling strength of community waste water is usually characterized by its

A) BOD

B) CFC

C) MIC

D) ABS.

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• question_answer104) When the pollutant flow is conveyed in well defined channels as municipal or industrial waste it is called

A) diffuse source

B) non-point source

C) point source

D) all of these.

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• question_answer105) Water comes polluted due to the presence or addition of

A) inorganic substances

B) organic substances

C) biological agents

D) all of these.

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• question_answer106) Photochemical combination of hydrocarbons and nitrogen oxides emitted by automobiles produces health threatening

A) acid rains

B) CFC

C) fly ash

D) smog.

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• question_answer107) The removal of lead and its products from petrol used in automobiles is necessary because lead

A) causes cancer of skin

B) impairs respiration

C) hampers haemoglobin formation

D) all of the above.

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• question_answer108) Large quantities of carbon monoxide, produced by gas heaters, charcoal stoves, coal mines etc., usually prove fatal as the pollutant

A) is carcinogenic

B) impairs respiration

C) is combustible

D) none of these.

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• question_answer109) Air pollution is caused by excess of

A) dinitrogen

B) hydrogen

C) water vapour

D) none of these.

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• question_answer110) The indiscriminate use of chemical fertilizers and pesticides may cause pollution of

A) air

B) soil

C) water

D) all of these.

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• question_answer111) Spadix is an inflorescence found only in

A) monocots

B) dicots

C) poaceae

D) asteraceae.

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• question_answer112) The agency responsible for seed dispersal in cotton, poppy and orchids is

A) bird

B) water

C) man

D) wind.

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• question_answer113) Among the following sets of fruits, those that belong to the same category, from the point of view of classification, are

A) coconut, chestnut and cashewnut

B) coconut, mango and almond

C) coconut, butternut and chestnut

D) coconut, orange and tomato.

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• question_answer114) In general, the feature common to the flowers of spadix, cyathium and hypanthodium is that they are

A) monandrous

B) synandrous

C) diclinous

D) achlamydeous.

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• question_answer115) Floral diagram fails to indicate

A) epiphylly and epipetaly

B) aestivation and placentation

C) position of ovary on the thalamus

D) cohesion of carpels and stamens.

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• question_answer116) Porous dehiscence of capsular fruits is seen in

A) okra

B) poppy

C) cotton

D) datura

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• question_answer117) Explosive fruits are a characteristic of

A) balsam

B) poppy

C) castor

D) none of these.

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• question_answer118) Cladode is a characteristic morphological feature of

A) Asparagus and Riiscus

B) Casuarina and Opuntia

C) Cladophora and Cactus

D) Citrus and Euphorbia

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• question_answer119) Nuclear reactor malfunction in any country is a cause of concern for

A) the reactors employees and neighbours

B) the entire human population

C) some enlightened persons world-wide

D) some developed and developing countries.

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• question_answer120) Eutrophication of water bodies is associated with water

A) hole

B) hyacinth

C) lily

D) none of these.

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• question_answer121) Cork cambium is also called

A) phellem

B) phellogen

C) phelloderm

D) none of these.

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• question_answer122) The division of an individual vascular cambial cell results in the formation of

A) two xylem mother cells

B) two phloem mother cells

C) one xylem and one phloem mother cell

D) one xylem or one phloem mother cell and one cambium cell.

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• question_answer123) The vascular bundles of dicot roots are

A) endarch and polyarch

B) exarch and polyarch

C) exarch and radial

D) endarch and collateral.

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• question_answer124) The difference between alburnum and duramen is the presence in the former of

A) companion cell

B) living cells

C) raw cells

D) lignified cells.

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• question_answer125) Fascicular, interfascicuiar and extra stelar cambium together constitute

A) lateral meristems

B) apical meristems

C) intercalary meristems

D) ground meristems.

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• question_answer126) A monocot root is characterized by vascular bundles that are closed as well as

A) endarch, collateral and tri-to pentarch

B) exarch, polyarch and radial

C) endarch, polyarch and radial

D) collateral, exarch and polyarch.

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• question_answer127) The protective tissue in the plant body consists of

A) xylem, phloem and cambium

B) epidermis, cork and bark

C) sclerenchyma, prosenchyma and collenchyma

D) all of the above.

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• question_answer128) The difference between shoot and root apex lies in lateral appendages being

A) present in the former

B) absent in the former

C) present in the latter

D) none of these.

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• question_answer129) The most highly evolved and perfect type of inflorescence is

A) hypanthodium

B) spadix

C) capitulum

D) polychasial cyme.

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• question_answer130) The flowers in a cyathium resemble the ray florets of sunflower in being

A) sessile

B) imperfect

C) neuter

D) bisexual.

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• question_answer131) Microsporogenesis is the

A) development of megaspore

B) development of pollen grain

C) development of male gametophyte

D) development of female gametophyte.

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• question_answer132) In a mature fertilized angiosperm ovule$n,2n$and 3n condition is found respectively in

A) antipodals, synergids and integuments

B) egg, antipodals and nucellus

C) antipodals, egg and endosperm

D) endosperm, nucellus and egg.

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• question_answer133) Pollination brought about by different flowers of the same individual plant is called

A) allogamy

B) autogamy

C) cleistogamy

D) geitonogamy.

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• question_answer134) The highly resistant biological material of which the exine of a pollen grain is made up is called

A) cutin

B) lignin

C) suberin

D) none of these.

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• question_answer135) The functional megaspore develops after three successive mitotic division into

A) embryo

B) embryo sac

C) ovule

D) zygote.

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• question_answer136) Most plant cells are surrounded by a cell wall. There are some exceptions, for example

A) bacteria

B) gametes

C) stem hairs

D) root hairs.

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• question_answer137) The similarity between palisade and spongy parenchyma of dorsiventral leaf lies in their

A) arrangement

B) function

C) shape

D) size.

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• question_answer138) Some common commercial fibres, like jute and flax, are obtained from

A) collenchyma

B) chlorenchyma

C) sclerenchyma

D) sclereids.

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• question_answer139) Collenchyma resembles parenchyma in being

A) potentially meristematic

B) partially cutinised

C) provided with air spaces

D) devoid of chloroplasts.

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• question_answer140) The nature of sieve elements in the phloem are

A) dead

B) enucleate

C) thick-walled

D) living but non-functional.

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• question_answer141) Maintenance of ecosystems depends upon

A) food-chains and webs

B) energy flow

C) materials cycles

D) viruses.

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• question_answer142) Metabolism, replication and homeostasis are the main characteristics of

A) eukaryotes

B) prokaryotes

C) organisms

D) viruses.

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• question_answer143) The first organisms to appear on earth were

A) photoautotrophs

B) chemoautotrophs

C) chemoheterotrophs

D) coacervates.

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• question_answer144) From the point of view of early chemical evolution that preceded the origin of life on earth, the most important simple organic molecules formed were

A) sugars and amino-acids

B) glycerol and fatty acids

C) purines and pyrimidines

D) all of the above.

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• question_answer145) Whereas todays atmosphere contains gases like$C{{O}_{2}}$and${{H}_{2}}O$vapour, but at the time of the origin of life was made up mainly of

A) $N{{H}_{3}},C{{H}_{4}}$and${{H}_{2}}O$vapour

B) $NO,N{{O}_{2}}$and$C{{O}_{2}}$

C) $N{{H}_{3}},N{{O}_{2}}$and${{H}_{2}}O$vapour

D) $C{{H}_{4}},NO$and$C{{O}_{2}}$.

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• question_answer146) The long gap of 300 million years between the origin of earth and of life on it was due to lack of

A) oxygen

B) water

C) DNA

D) suitable temperature.

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• question_answer147) Whereas the earth is believed to be 4,500 million years old, life on this planet is estimated to have originated not earlier than

A) 4,200 million years ago

B) 3,500 million years ago

C) 1, 600 million years ago

D) 459 million years ago.

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• question_answer148) Pollination by bats is called

A) anemophily

B) hydrophily

C) ornithophily

D) none of these.

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• question_answer149) In nature, allogamy is met within

A) unisexual flowers only

B) neuter flowers only

C) underground flowers only

D) none of the above.

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• question_answer150) Anther culture may be used as a technique for producing haploid plants. However, some diploid plants may also be obtained in the process due to

A) fusion of male and vegetative cells

B) development of exine and entine

C) development of another wall cells

D) fusion of male cells.

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• question_answer151) The theory of continental drift was originally proposed by

A) Alfred Wegener

B) Robert I Bowman

C) Charles Darwin

D) Alfred Bailey.

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• question_answer152) Splint bone is a vestigial structure in

A) man

B) whale

C) horse

D) Rhea.

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• question_answer153) The primitive mammals originated during

A) triassic period

B) Jurassic period

C) cretaceous period

D) none of these.

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• question_answer154) Author of the book Historia Generalis Plantarum is

A) Caroleus Linnaeus

B) George Bentham

C) John Ray

D) Dalton Hooker.

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• question_answer155) Most petroleum bearing regions shows the presence of fossil states of

A) Tetrahymena

B) Radiolaria

C) Paramecium

D) Trichonympha.

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• question_answer156) Sea cucumbers belong to class

A) echinoidea

B) holothuroidea

C) ophiuroidea

D) asteroidea.

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• question_answer157) Skull is dicondylic in

A) reptilia

B) aves

C) mammalia

D) both [b] and [c].

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• question_answer158) Botryoidal tissue is found in

A) hirudina

B) polychaeta

C) oligochaeta

D) all of these.

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• question_answer159) The larva of Petromyzon is known as

A) redia

B) spat

C) ammocoete

D) tornaria.

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• question_answer160) The theory of chemical evolution of life was experimentally proved by

A) Miller

B) Haldane

C) Redi

D) Spallanzani.

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• question_answer161) In presence of vasopressin, the greatest fraction of filtered water is absorbed in the

A) loop of Henie

B) proximal tubule

C) distal tubule

D) collecting duct.

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• question_answer162) Which of the following is not primarily a function of blood plasma?

A) transport of${{O}_{2}}$

B) transport of hormones

C) transport of antibodies

D) maintenance of RBC size.

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• question_answer163) In an ECG, the QRS stands for

A) arterial depolarization

B) ventricular depolarization

C) arterial repolarization

D) ventricular repolarization.

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• question_answer164) Thrombin indirectly deactivates factor VIII and V via

A) antithrombin II

B) protein C

C) tissue factor, pathway inhibtor

D) plasmin.

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• question_answer165) Which one of the following is an example of a conjugated protein?

A) casein

B) albumin

C) globulin

D) globin.

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• question_answer166) Which of the following minerals needed for the activity of enzymes required for the synthesis of oligosaccharides and glycoproteins?

A) $Mn$

B) $Mg$

C) $Cu$

D) $Mo$

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• question_answer167) The major fibrous proteins that provide external protection to vertebrates are

A) collagen

B) elastin

C) $\alpha -$keratins

D) none of these.

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• question_answer168) Desmosomes are

A) a special type of chromosomes

B) a cell organelle

C) cell junction of connective tissue

D) cell junction of epithelial tissue.

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• question_answer169) The secretory epithelium of sebaceous glands is

A) cuboidal

B) stratified squamous

C) columnar

D) stratified columnar.

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• question_answer170) Argyrophilic fibre is another name for

A) collagen fibre

B) reticular fibre

C) elastic fibre

D) none of these.

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• question_answer171) Diagrammatic representation of the chromosomes of an organism arranged according to their size is called

A) karyotype

B) genotype

C) ecotype

D) idiogram.

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• question_answer172) Glucagon is not normally found in the

A) pancreas

B) gastro intestinal tract

C) adrenal

D) all of these.

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• question_answer173) All hypophysiotropic hormones are peptides except

A) corticotropin releasing hormone

B) growth hormone

C) somatostatin

D) prolactin release inhibiting hormone.

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• question_answer174) Which of the following is not synthesized in both the brain arid endocrine glands?

A) ACTH

B) cortisol

C) oxytocin

D) somatostatin.

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• question_answer175) Cumulus proligerus cells are found around

A) oviducal funnel

B) corpus albicans

C) ovum

D) ovary.

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• question_answer176) Which of the following hormones does not have a particular target organ in the body?

A) growth hormone

B) thyroxine

C) oxytocin

D) FSH.

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• question_answer177) Which one of the following acts as a transmitter at the neuromuscular junction?

A) gamma aminobutyric acid

B) acetylcholine

C) thyroxine

D) melatonin.

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• question_answer178) Refractory period comes in between

A) resting potential and depolarization

B) depolarization and repolarization

C) action potential and depolarization

D) two cycles of impulse conduction.

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• question_answer179) The helicotrema is the communicating link between the

A) sacculus and cochlea

B) tympanic and vestibular canals

C) vestibular and median canals

D) sacculus and utriculus.

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• question_answer180) Trimethylamine oxide is an excretory product in

A) fresh water teleosts

B) marine teleosts

C) marine invertebrate

D) none of these.

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• question_answer181) Among HIV viruses which one is more virulent causing AIDS in 90% of the cases?

A) HIV-I

B) HIV-II

C) HIV-III

D) all of these.

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• question_answer182) Which zone of a lake has no photosynthetic organism?

A) profundal zone

B) littoral zone.

C) limnetic zone

D) both [b] and [c].

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• question_answer183) Terai forest is

A) tropical forest

B) coniferous forest

C) both [a] & [b]

D) temperate deciduous forest.

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• question_answer184) The Wildlife Protection Act was enacted by the Indian Parliament in

A) 1962

B) 1972

C) 1983

D) 1989.

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• question_answer185) During which stages (or prophase I substages) of meiosis do you expect to find the bivalents and DNA replication respectively?

A) pachytene and interphase (between two meiotic divisions)

B) pachytene and interphase Gust prior to prophase I)

C) pachytene and S phase (of interphase just prior to prophase I)

D) zygotene and S phase (of interphase prior to prophase I).

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• question_answer186) From a diploid condition of 2N, which condition can arise due to non-disjunction of chromosomes?

A) 3N

B) 5N

C) $2N+1$

D) N.

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• question_answer187) Which is not X-linked?

A) Duchenne muscular dystrophy

B) protanopea

C) G6PD

D) congenital adrenal hyperplasia.

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• question_answer188) Human chromosome number was determined correctly by

A) Landsteiner

B) Moorehead

C) Tijo and Levan

D) J.L. Hamerton.

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• question_answer189) Nucleic acids have multiple negative charges due to

A) sugars

B) phosphoryl groups

C) associated protein

D) purine and pyrimidines.

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• question_answer190) At the end of prophase, nucleolus disappears because of

A) its enzymatic dissolution into its macromolecules

B) its dispersion into cytoplasm

C) its dispersion into nucleoplasm

D) its poor stainability.

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• question_answer191) Waggle dance in honey bees tells about

A) direction of food source

B) distance of food source

C) both [a] and [b]

D) none of the above.

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• question_answer192) Normal functioning of sex glands is regulated by

A) tocopherol

B) calciferol

C) phylloquinone

D) pyridoxine.

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• question_answer193) Riboflavin contains the nucleotides

A) FMN

B) FAD

C) both FMN and FAD

D) none of these.

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• question_answer194) Which of the following has the highest pH?

A) gastric juice

B) bile

C) pancreatic juice

D) secretion of the intestinal glands.

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• question_answer195) The activity of the enzyme threonine deaminase is inhibited by

A) malonic acid

B) sulphur drugs

C) glucose-6-phosphate

D) isoleucine.

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• question_answer196) Which is not a correct situation?

A) $ATP\xrightarrow[{}]{~ATPase}$3, 5, cyclic AMP

B) $ATP~\xrightarrow[{}]{Adenylate\,cyclase}$ 3, 5 cyclic AMP

C) $ATP~\to ADP+Pi$

D) $ADP~\to AMP+Pi$

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• question_answer197) Sporozoites are

A) uninucleate

B) binucleate

C) multinucleate

D) none-of these.

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• question_answer198) Interferon$\beta$is also termed as

A) immune interferon

B) fibroblast interferon

C) leucocyte interferon

D) anti-immune interferon..

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• question_answer199) The causative agent of Hansens disease is

A) Myobacterium tuberculosis

B) Myobacterium leprae

C) Cornybacterium diphtheriae

D) Clostridium tetani.

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• question_answer200) A pure cell line of human cancer cells used for cultivation of viruses are called

A) malignant cells

B) myeloma

C) HeLa cells

D) none of these.

View Answer play_arrow

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