Solved papers for BCECE Medical BCECE Medical Solved Papers-2012

done BCECE Medical Solved Papers-2012

  • question_answer1) The dimensional formula of wave number is

    A) \[[{{M}^{0}}{{L}^{0}}{{T}^{0}}]\]

    B) \[[{{M}^{0}}{{L}^{-1}}{{T}^{0}}]\]

    C) \[[{{M}^{0}}{{L}^{0}}{{T}^{-1}}]\]

    D) \[[{{M}^{-1}}{{L}^{-1}}{{T}^{0}}]\]

    View Answer play_arrow
  • question_answer2) A body of mass m is moving in a circle of radius r with a constant speed \[\upsilon \]. If a force \[\frac{m{{v}^{2}}}{r}\] is acting on the body towards the centre, then what will be the work done by this force in moving the body over half the circumference of the circle?

    A) Zero

    B) \[\frac{m{{v}^{2}}}{{{r}^{2}}}\]

    C) \[\frac{m{{v}^{2}}}{r}\times \pi r\]

    D) \[\frac{\pi {{r}^{2}}}{m{{v}^{2}}}\]

    View Answer play_arrow
  • question_answer3) If under the action of a force \[(4i+j+3k)\,N\], a particle moves from position \[{{r}_{1}}=3i+2j-6k\] to position \[{{r}_{2}}=14i+13j+9k\], then the work done will be

    A) 50 J

    B) 75 J

    C) 300 J

    D) 175 J

    View Answer play_arrow
  • question_answer4) A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m. They are in contact for a short time T. Their force of interaction increases from zero to \[{{F}_{0}}\] linearly in time \[\frac{T}{2}\] and decreases linearly to zero in further time \[\frac{T}{2}\] (shown in figure). The magnitude of \[{{F}_{0}}\] is

    A) \[mu/2T\]

    B) mu/T

    C) 2mu/T

    D) None of these

    View Answer play_arrow
  • question_answer5) Two planets revolves around the sun with frequencies \[{{N}_{1}}\] and \[{{N}_{2}}\] revolutions per year. If their average radii (orbital) be \[{{R}_{1}}\] and \[{{R}_{2}}\] respectively, then \[{{R}_{1}}/{{R}_{2}}\] is equal to

    A) \[{{({{N}_{1}}/{{N}_{2}})}^{2/3}}\]

    B) \[{{({{N}_{1}}/{{N}_{2}})}^{3/2}}\]

    C) \[{{({{N}_{2}}/{{N}_{1}})}^{2/3}}\]

    D) \[{{({{N}_{2}}/{{N}_{1}})}^{3/2}}\]

    View Answer play_arrow
  • question_answer6) To what height water should be filled in a container of height 21 cm, so that it appears as half filled when viewed from the top \[\left( Tak{{e}_{a}}{{\mu }_{w}}=\frac{4}{3} \right)\]

    A) 12 cm

    B) 15 cm

    C) 10.5 cm

    D) 7 cm

    View Answer play_arrow
  • question_answer7) A progressive wave is represented as \[y=0.2\cos \pi \left( 0.04+0.2x-\frac{\pi }{6} \right)\] where distance is expressed in cm and time in second. What will be the minimum distance between two particles having the phase difference of \[\frac{\pi }{2}\]?

    A) 4 cm

    B) 8 cm

    C) 25 cm

    D) 12.5 cm

    View Answer play_arrow
  • question_answer8) When the temperature increases, then the frequency of the sound produced by the organ pipe will

    A) unchanged

    B) increases

    C) decreases

    D) Not definite

    View Answer play_arrow
  • question_answer9) The distance between the poles of a horse shoe magnet is 0.1 m and its pole strength is 0.01 A-m. The induction of magnetic field at a point mid way between the poles will be

    A) Zero

    B) \[2\times {{10}^{-5}}T\]

    C) \[4\times {{10}^{-6}}T\]

    D) \[8\times {{10}^{-7}}T\]

    View Answer play_arrow
  • question_answer10) Which logic gate is represented by the following combination of logic gates?

    A) OR

    B) NAND

    C) XOR

    D) None of these

    View Answer play_arrow
  • question_answer11) For the transistor circuit shown in figure, if\[\beta =100\], voltage drop across emitter and base is 0.7 V, then the value of \[{{V}_{CE}}\] will be

    A) Zero

    B) 5 V

    C) 10 V

    D) 13 V

    View Answer play_arrow
  • question_answer12) If a uniform solid sphere and a disc of same mass and same radius rolls down on an inclined smooth plane from rest to the same distance, then the ratio of the time taken by them will be

    A) 15 : 14

    B) \[\sqrt{14}\,:\,\sqrt{15}\]

    C) 14 : 15

    D) \[{{15}^{2}}\,:\,{{14}^{2}}\]

    View Answer play_arrow
  • question_answer13) If a stone is projected from ground with a velocity \[50\,m{{s}^{-1}}\] and at an angle of \[{{30}^{o}}\], it takes 3 s to cross a wall. How far beyond the wall the stone will strike the ground? (Take \[g=10\,\,m{{s}^{-2}}\])

    A) 50.5 m

    B) 91.5 m

    C) 86.6 m

    D) 100 m

    View Answer play_arrow
  • question_answer14) For a body starting from rest, what will be the ratio of the distance travelled by the body during the 4th and 3rd second during its journey?

    A) \[\frac{7}{5}\]

    B) \[\frac{7}{3}\]

    C) \[\frac{5}{7}\]

    D) \[\frac{3}{7}\]

    View Answer play_arrow
  • question_answer15) If the compressibility of water is a (sigma) per unit atmospheric pressure, then the decrease in volume V due to p, atmospheric pressure will be

    A) \[\sigma V/p\]

    B) \[\sigma pV\]

    C) \[\sigma /pV\]

    D) \[\sigma p/V\]

    View Answer play_arrow
  • question_answer16) A soap film of surface tension \[3\times {{10}^{-2}}N{{m}^{-1}}\] formed in a rectangular frame, can support a straw. If the length of the film is 10 cm, then the mass of the straw that film can support is

    A) 0.06 g

    B) 0.6 g

    C) 6g

    D) 60g

    View Answer play_arrow
  • question_answer17) There are two identical small holes of area of cross section a on the either sides of a tank containing a liquid of density \[\rho \] (shown in figure). The difference in height between the holes is ft. Tank is resting on a smooth horizontal surface. Horizontal force which will has to be applied on the tank to keep it in equilibrium is

    A) \[\frac{2gh}{\rho a}\]

    B) \[\frac{\rho gh}{a}\]

    C) \[gh\rho a\]

    D) \[2\rho agh\]

    View Answer play_arrow
  • question_answer18) Certain amount of an ideal gas of molecular mass M is contained in a closed vessel. If the vessel is moving with a constant velocity v, then the rise in temperature of the gas when the vessel is suddenly stopped will be \[\left( Take\,\,\gamma =\frac{{{C}_{p}}}{{{C}_{V}}} \right)\]

    A) \[\frac{M{{v}^{2}}}{2\,R(\gamma +1)}\]

    B) \[\frac{M{{v}^{2}}}{2\,R(\gamma -1)}\]

    C) \[\frac{M{{v}^{2}}(\gamma -1)}{2\,R}\]

    D) \[\frac{M{{v}^{2}}(\gamma +1)}{2\,R}\]

    View Answer play_arrow
  • question_answer19) Water and turpentine oil (specific heat less than that of water) are both heated to same temperature. Equal amounts of both are then placed in identical calorimeters and then left in air

    A) A and B will represent cooling curves of water and oil respectively

    B) B and A will represent cooling curves of water and oil respectively

    C) their cooling curves will be identical

    D) None of the above

    View Answer play_arrow
  • question_answer20) By suspending a mass of 0.50 kg a spring is stretched by 8.20 m. If a mass of 0.25 kg is suspended, then its period of oscillation will be (Take \[g=10\,\,m{{s}^{-2}}\])

    A) 0.137 s

    B) 0.328 s

    C) 0.628 s

    D) 1.00 s

    View Answer play_arrow
  • question_answer21) If the period of revolution of a nearest satellite around a planet of radius R is T then its period of revolution around another planet, having radius 3JR and same density will be

    A) T

    B) 3T

    C) 3V3T

    D) 9T

    View Answer play_arrow
  • question_answer22) A body of mass m is suspended from a string of length \[l\]. What is the minimum horizontal velocity that should be given to the body at its lowest position so that it may complete one full revolution in the vertical plane with the point of suspension as the centre of the circle?

    A) \[v=\sqrt{2lg}\]

    B) \[v=\sqrt{3lg}\]

    C) \[v=\sqrt{4lg}\]

    D) \[v=\sqrt{5lg}\]

    View Answer play_arrow
  • question_answer23) Rest mass energy of an electron is 0.54 MeV. If velocity of the electron is 0.8 C, then its kinetic energy will be

    A) 0.36 MeV

    B) 0.41 MeV

    C) 0.48 MeV

    D) 1.32 MeV

    View Answer play_arrow
  • question_answer24) Which one of the following graphs represents the graph between the instantaneous concentration (N) of a radioactive element and time (t)?





    View Answer play_arrow
  • question_answer25) In the circuit given below the value of current is

    A) 0

    B) \[{{10}^{-2}}A\]

    C) \[{{10}^{2}}A\]

    D) \[{{10}^{-3}}A\]

    View Answer play_arrow
  • question_answer26) In a diode AM detector, the output circuit consists of \[R=1\,k\Omega \] and \[C=10\,pF\]. A carrier signal of 100 k Hz is to be detected. Is it good?

    A) Yes

    B) No

    C) Information is not sufficient

    D) None of the above

    View Answer play_arrow
  • question_answer27) Let a straight wire of length I carries a current\[i\]. The magnitude of magnetic field produced by the current at point P (as shown in figure) is

    A) \[\frac{{{\mu }_{0}}i}{2\sqrt{2}\pi l}\]

    B) \[\frac{\sqrt{2}{{\mu }_{0}}i}{8\pi l}\]

    C) \[\frac{{{\mu }_{0}}i}{4\pi l}\]

    D) \[\frac{\sqrt{2}{{\mu }_{0}}i}{\pi l}\]

    View Answer play_arrow
  • question_answer28) 0.8 J work is done in rotating a magnet by \[{{60}^{o}}\], placed parallel to a uniform magnetic field. How much work is done in rotating it \[{{30}^{o}}\]further?

    A) \[0.8\times {{10}^{7}}\,erg\]

    B) 0.8 erg

    C) 8J

    D) 0.4 J

    View Answer play_arrow
  • question_answer29) The magnetic moment produced in a substance of 1 g is \[6\times {{10}^{-7}}\,\,A-{{m}^{2}}\]. If its density is \[5\,g\,c{{m}^{-3}}\], then the intensity of magnetisation in A/m will be

    A) 3.0

    B) \[3\times {{10}^{-6}}\]

    C) \[8.3\times {{10}^{6}}\]

    D) \[1.2\times {{10}^{-7}}\]

    View Answer play_arrow
  • question_answer30) In which of the following circuit is the current maximum just after the switch S is closed?

    A) (i)

    B) (ii)

    C) (iii)

    D) Both (ii) and (iii)

    View Answer play_arrow
  • question_answer31) Let ABC is a right angled triangle in which AB = 3 cm and BC = 4 cm and \[\angle ABC={{90}^{o}}\]. The three charges +15, +12 and -20 esu are placed on 4, B and C respectively. The force acting on B will be

    A) Zero

    B) 25 dyne

    C) 30 dyne

    D) 150 dyne

    View Answer play_arrow
  • question_answer32) Four plates of same area of cross-section are joined as shown in figure. The distance between each plate is d. The equivalent capacity between A and B will be

    A) \[\frac{2\,{{\varepsilon }_{0}}\,A}{d}\]

    B) \[\frac{{{\varepsilon }_{0}}\,A}{d}\]

    C) \[\frac{3{{\varepsilon }_{0}}\,A}{d}\]

    D) \[\frac{3{{\varepsilon }_{0}}\,A}{2\,d}\]

    View Answer play_arrow
  • question_answer33) If a voltmeter of resistance 1000 \[\Omega \] is connected across a resistance of 500 \[\Omega \] in the given circuit, then the reading of voltmeter will be

    A) 1 V

    B) 2 V

    C) 6 V

    D) 4 V

    View Answer play_arrow
  • question_answer34) In the grid circuit of a triode a signal \[E=2\sqrt{2}\cos \,\omega t\] is applied. If \[\mu =14\] and\[{{r}_{p}}=10\,\,k\Omega \], then rms current flowing through \[{{R}_{L}}=12\,k\Omega \] will be

    A) 1.5 mA

    B) 1.27 mA

    C) 10 mA

    D) 12.4 mA

    View Answer play_arrow
  • question_answer35) A rigid body of mass m rotates with angular velocity g) about an axis at a distance a from the centre of mass C. The radius of gyration about C is K. Then, kinetic energy of rotation of the body about new parallel axis is

    A) \[\frac{1}{2}m{{K}^{2}}{{\omega }^{2}}\]

    B) \[\frac{1}{2}m{{a}^{2}}{{\omega }^{2}}\]

    C) \[\frac{1}{2}m(a+{{K}^{2}}){{\omega }^{2}}\]

    D) \[\frac{1}{2}m({{a}^{2}}+{{K}^{2}}){{\omega }^{2}}\]

    View Answer play_arrow
  • question_answer36) The angle of contact between glass and water is \[{{0}^{o}}\] and it rises in a capillary upto 6 cm when its surface tension is 70 dyne/cm. Another liquid of surface tension 140 dyne/cm, angle of contact \[{{60}^{o}}\] and relative density 2 will rise in the same capillary by

    A) 3 cm

    B) 16 cm

    C) 12 cm

    D) 24 cm

    View Answer play_arrow
  • question_answer37) If the height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill and the ratio of density of mercury to that of air is \[{{10}^{4}}\] then the height of the hill is

    A) 1.25 km

    B) 2.5 km

    C) 250 m

    D) 750 m

    View Answer play_arrow
  • question_answer38) If the displacement equation of a particle from its mean position is given as \[y=0.2\sin \,(10\pi t+1.5\pi )cos(10\pi t+1.5\pi )\] then, the motion of particle is

    A) anon-periodic

    B) periodic but not SHM

    C) SHM with period 0.2 s

    D) SHM with period 0.1 s

    View Answer play_arrow
  • question_answer39) Let PQR is a right angled prism with other angles as \[{{60}^{o}}\] and \[{{30}^{o}}\]. PQ has a thin layer of liquid and light falls normally oh the face PR as shown in figure. If the refractive index of prism is 1.5, then for total internal reflection, maximum refractive index of liquid will be

    A) 1.2

    B) 1.3

    C) 1.4

    D) 1.5

    View Answer play_arrow
  • question_answer40) According to corpuscular theory of light, the different colours of light are due to

    A) different size of the corpuscules

    B) different electromagnetic waves

    C) different force of attraction among the corpuscles

    D) None of the above

    View Answer play_arrow
  • question_answer41) An antenna is a device

    A) that converts radio frequency signal into electromagnetic theory

    B) that converts electromagnetic energy into radio frequency signal

    C) that converts guided electromagnetic waves into free space electromagnetic waves and vice-versa

    D) None of the above

    View Answer play_arrow
  • question_answer42) A resistor R, inductor L and a capacitor C are connected in series to an oscillator of frequency v. If the resonant frequency is \[{{v}_{r}}\], theft the current lags behind the voltage, when

    A) \[v=0\]

    B) \[v<{{v}_{r}}\]

    C) \[v>{{v}_{r}}\]

    D) \[v={{v}_{r}}\]

    View Answer play_arrow
  • question_answer43) The instantaneous values of current and voltage in an AC circuit are \[i=100\sin 314t\] amp and \[e=200\sin \left( 314t+\frac{\pi }{3} \right)V\] respectively. If the resistance is \[1\,\Omega \], then the reactance of the circuit will be

    A) \[\sqrt{3}\,\Omega \]

    B) \[100\sqrt{3}\,\Omega \]

    C) \[-200\sqrt{3}\,\Omega \]

    D) \[-200/\sqrt{3}\,\Omega \]

    View Answer play_arrow
  • question_answer44) When green light is incident on the surface of a metal. It emits photo electrons but there is no such emission with yellow colour light. Which one of the colour can produce emission of photo electrons?

    A) Red

    B) Indigo

    C) Orange

    D) None of these

    View Answer play_arrow
  • question_answer45) If an electron jumps from the 4th orbit to the 2nd orbit of hydrogen atom, then the frequency of emitted radiation in the hertz will be (Take Rydbergs constant, \[R={{10}^{5}}\,c{{m}^{-1}}\])

    A) \[\frac{3}{4}\times {{10}^{15}}\]

    B) \[\frac{3}{16}\times {{10}^{15}}\]

    C) \[\frac{3}{16}\times {{10}^{15}}\]

    D) \[\frac{9}{16}\times {{10}^{15}}\]

    View Answer play_arrow
  • question_answer46) If the ratio of radii of nuclei \[_{13}^{27}\]Al and \[_{52}^{A}X\] is 3 : 5, then the number of neutrons in the nuclei of X will be

    A) 13

    B) 52

    C) 100

    D) 73

    View Answer play_arrow
  • question_answer47) Number of nuclei of a radioactive substance at time t = 0 are 1000 and 900 at time t = 2 s. What will be the number of nuclei at time t = 4 s?

    A) 810

    B) 800

    C) 790

    D) 700

    View Answer play_arrow
  • question_answer48) A bar magnet has coercivity \[4\times {{10}^{3}}A{{m}^{-1}}\]. It is desired to demagnetise it by inserting it inside a solenoid 12 cm long and having 60 turns. The current that should be sent through the solenoid is

    A) 8 A

    B) 10A

    C) 12 A

    D) 14 A

    View Answer play_arrow
  • question_answer49) A potentiometer is an ideal device of measuring potential difference because

    A) it uses a sensitive galvanometer

    B) it is an elaborate arrangement

    C) it has a long wire hence heat developed is quickly radiated

    D) it does not disturb the potential difference it measures

    View Answer play_arrow
  • question_answer50) If the momentum of a body is increased by n times, then its kinetic energy increases

    A) n times

    B) \[{{n}^{2}}\] times

    C) \[2n\] times

    D) \[\sqrt{n}\] times

    View Answer play_arrow
  • question_answer51) When 1 mole gas is heated at constant volume, temperature is raised from 298 K to 308K. Heat supplied to the gas is 500 J. Then which statement is correct?

    A) \[q=w=500\,J,\,\,\Delta U=0\]

    B) \[q=\Delta U=500\,J,w=0\]

    C) \[q=W=500\,J,\Delta U=0\]

    D) \[\Delta U=0,\,\,q=W=-500\,J\]

    View Answer play_arrow
  • question_answer52) For the reaction, \[2{{N}_{2}}{{O}_{5}}\to 4N{{O}_{2}}+{{O}_{2}}\] rate and rate constant are \[1.02\times {{10}^{-4}}\] and\[3.4\times {{10}^{-5}}{{s}^{-1}}\] respectively, then concentration of \[{{N}_{2}}{{O}_{5}}\] at that time will be

    A) 1.732

    B) 3

    C) \[1.02\times {{10}^{-4}}\]

    D) \[3.4\times {{10}^{5}}\]

    View Answer play_arrow
  • question_answer53) A human body required the 0.01 M activity of radioactive substance after 24 h. Half-life of radioactive substanu is 6 h. Then injection of maximum activity of radioactive substance that can be injected

    A) 0.08

    B) 0.04

    C) 0.16

    D) 0.32

    View Answer play_arrow
  • question_answer54) Molarity of liquid \[HCl\] if density of solution is 1.17 g/cc

    A) 36.5

    B) 18.25

    C) 32.05

    D) 42.10

    View Answer play_arrow
  • question_answer55) Which one of the following is not paramagnetic?

    A) NO

    B) \[N_{2}^{+}\]

    C) CO

    D) \[O_{2}^{-}\]

    View Answer play_arrow
  • question_answer56) Among the following ions the \[p\pi -d\pi \] overlap could be present in

    A) \[NO_{2}^{-}\]

    B) \[NO_{3}^{-}\]

    C) \[PO_{4}^{3-}\]

    D) \[CO_{3}^{2-}\]

    View Answer play_arrow
  • question_answer57) A compound formed by elements A and B crystallises in the cubic structure where A atoms are at the corners of a cube and B atoms are at the face centres. The formula of the compound is

    A) \[{{A}_{2}}{{B}_{2}}\]

    B) \[A{{B}_{3}}\]

    C) AB

    D) \[{{A}_{3}}B\]

    View Answer play_arrow
  • question_answer58) Assuming fully decomposed, the volume of\[C{{O}_{2}}\] released at STP on heating 9.85 g of \[BaC{{O}_{3}}\] (atomic mass, Ba = 137) will be

    A) 1.12L

    B) 0.84 L

    C) 2.24 L

    D) 4.06 L

    View Answer play_arrow
  • question_answer59) The correct structure of \[Fe{{(CO)}_{5}}\] is

    A) trigonal bipyramidal

    B) octahedral

    C) tetrahedral

    D) square pyramidal

    View Answer play_arrow
  • question_answer60) Which one of the following forms a colourless solution in aqueous medium? (Atomic number\[Sc=21,\,\,Ti=22,\,V=23,Cr=24\])

    A) \[{{V}^{3+}}\]

    B) \[C{{r}^{3+}}\]

    C) \[T{{i}^{3+}}\]

    D) \[S{{c}^{3+}}\]

    View Answer play_arrow
  • question_answer61) \[_{92}{{U}^{235}}\] nucleus absorbs a neutron and disintegrate in \[_{54}X{{e}^{139}},\,{{\,}_{38}}S{{r}^{94}}\] and X so, what will be product X?

    A) 3-neutrons

    B) 2-neutrons

    C) \[\alpha \]-particle

    D) \[\beta \]-particle

    View Answer play_arrow
  • question_answer62) In hydrogen atom, energy of first excited state is -3.4 eV. Then KE of same orbit of hydrogen atom

    A) + 3.4 eV

    B) + 6.8 eV

    C) - 13.6eV

    D) + 13.6 eV

    View Answer play_arrow
  • question_answer63) Reaction, \[Ba{{O}_{2}}(s)BaO(s)+{{O}_{2}}(g);\,\Delta H=+ve\]. In equilibrium condition, pressure of \[{{O}_{2}}\]depends on

    A) increased mass of \[Ba{{O}_{2}}\]

    B) increased mass of BaO

    C) increased temperature of equilibrium

    D) increased mass of \[Ba{{O}_{2}}\] and BaO both

    View Answer play_arrow
  • question_answer64) Solution of \[0.1\,N\,N{{H}_{4}}OH\] and \[0.1\,N\,N{{H}_{4}}Cl\] has \[pH\,9.25\], then find out \[p{{K}_{b}}\] of \[N{{H}_{4}}OH\].

    A) 9.25

    B) 4.75

    C) 3.75

    D) 8.25

    View Answer play_arrow
  • question_answer65) van der Waals real gas, acts as an ideal gas at which condition?

    A) High temperature, low pressure

    B) Low temperature, high pressure

    C) High temperature, high pressure

    D) Low temperature, low pressure

    View Answer play_arrow
  • question_answer66) Unit of entropy is

    A) \[J{{K}^{-1}}mo{{l}^{-1}}\]

    B) \[J\,\,mo{{l}^{-1}}\]

    C) \[{{J}^{-1}}{{K}^{-1}}mo{{l}^{-1}}\]

    D) \[JK\,\,mo{{l}^{-1}}\]

    View Answer play_arrow
  • question_answer67) \[3A\xrightarrow{{}}B+C\] It would be a zero order reaction when

    A) the rate of reaction is proportional to square of concentration of A

    B) the rate of reaction remains the same at any concentration of A

    C) the rate remains unchanged at any concentration of B and C

    D) the rate of reaction doubles if concentration of B is increased to double

    View Answer play_arrow
  • question_answer68) In electrolysis of \[NaCl\] when Pt electrode is taken then \[{{H}_{2}}\] is liberated at cathode while with Hg cathode it forms sodium amalgam because

    A) Hg is more inert than Pt

    B) more voltage is required to reduce H+ at Hg than at Pt

    C) Na is dissolved in Hg while it does not dissolved in Pt

    D) concentration of \[{{H}^{+}}\] ions is larger when Pt electrode is taken

    View Answer play_arrow
  • question_answer69) Which of the following statement is true?

    A) Silicon exhibits 4 coordination number in its compounds

    B) Bond energy of \[{{F}_{2}}\] is less than \[C{{l}_{2}}\]

    C) Mn(III) oxidation state is more stable than Mn(II) in aqueous state

    D) Elements of 15th group shows only +3 and +5 oxidation states

    View Answer play_arrow
  • question_answer70) An atom has electronic configuration\[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{3}},4{{s}^{2}}\]. You will place it in

    A) fifth group

    B) fifteenth group

    C) second group

    D) third group

    View Answer play_arrow
  • question_answer71) The hypothetical complex chloro diaquatriammine cobalt (III) chloride can be represented as

    A) \[[CoCl{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}]C{{l}_{2}}\]

    B) \[[Co{{(N{{H}_{3}})}_{3}}({{H}_{2}}O)C{{l}_{3}}]\]

    C) \[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{2}}Cl]\]

    D) \[[Co{{(N{{H}_{3}})}_{3}}{{({{H}_{2}}O)}_{3}}]C{{l}_{3}}\]

    View Answer play_arrow
  • question_answer72) In the silver plating of copper, \[K[Ag{{(CN)}_{2}}]\] is used instead of \[AgN{{O}_{3}}\]. The reason is

    A) a thin layer of Ag is formed on Cu

    B) more voltage is required

    C) \[A{{g}^{+}}\] ions are completely removed from solution

    D) less availability of \[A{{g}^{+}}\] ions, as Cu cannot displace Ag from \[[Ag{{(CN)}_{2}}]\] ion

    View Answer play_arrow
  • question_answer73) \[CuS{{O}_{4}}\] when reacts with KCN forms CuCN which is insoluble in water. It is soluble in excess of KCN due to the formation of the following complex

    A) \[{{K}_{2}}[Cu{{(CN)}_{4}}]\]

    B) \[{{K}_{3}}[Cu{{(CN)}_{4}}]\]

    C) \[CuC{{N}_{2}}\]

    D) \[Cu\,[K\,Cu{{(CN)}_{4}}]\]

    View Answer play_arrow
  • question_answer74) Zn gives \[{{H}_{2}}\] gas with \[{{H}_{2}}S{{O}_{4}}\] and \[HCl\] but not with \[HN{{O}_{3}}\]

    A) Zn act as oxidising agent when react with \[HN{{O}_{3}}\]

    B) \[HN{{O}_{3}}\] is weaker acid than \[{{H}_{2}}S{{O}_{4}}\] and \[HCl\]

    C) in electrochemical series Zn is above hydrogen

    D) \[NO_{3}^{-}\] is reduced in preference to hydronium ion

    View Answer play_arrow
  • question_answer75) IUPAC name of the following is \[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{2}}-C\equiv CH\]

    A) 1, 5-hexenyne

    B) l-hexene-5-yne

    C) 1-hexyne-5-ene

    D) 1, 5-hexynene

    View Answer play_arrow
  • question_answer76) Product P in the above reaction is





    View Answer play_arrow
  • question_answer77) n-propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?

    A) PCIs

    B) Reduction.

    C) Oxidation with potassium dichromate

    D) Ozonolysis

    View Answer play_arrow
  • question_answer78) In the following reaction, product P is \[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-Cl\xrightarrow[Pd-BaS{{O}_{4}}]{{{H}_{2}}}P\]

    A) \[RC{{H}_{2}}OH\]

    B) RCOOH

    C) RCHO

    D) \[RC{{H}_{3}}\]

    View Answer play_arrow
  • question_answer79) Enzymes are made up of

    A) edible proteins

    B) proteins with specific structure

    C) nitrogen containing carbohydrates

    D) carbohydrates

    View Answer play_arrow
  • question_answer80) Geometrical isomers differ in

    A) position of functional group

    B) position of atoms

    C) spatial arrangement of atoms

    D) length of carbon chain

    View Answer play_arrow
  • question_answer81) Monomer of \[{{\left[ -\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}- \right]}_{n}}\] is

    A) 2-methylpropene

    B) styrene

    C) propylene

    D) ethane

    View Answer play_arrow
  • question_answer82) Which one of the following will have largest number of atoms?

    A) 1 g Au

    B) 1 g Na

    C) 1 g Li

    D) \[1\,g\,C{{l}_{2}}\]

    View Answer play_arrow
  • question_answer83) The size of isoelectronic species ; \[{{F}^{-}},Ne,\,N{{a}^{+}}\] is affected by

    A) nuclear charge (Z)

    B) valence principal quantum number (n)

    C) electron-electron interaction in the outer orbitals

    D) None of the factors because their size is the same

    View Answer play_arrow
  • question_answer84) \[\Delta {{U}^{o}}\] of combustion of methane is\[-X\,k\,J\,mo{{l}^{-1}}\]. The value of \[\Delta {{H}^{o}}\] is

    A) \[=\Delta {{U}^{o}}\]

    B) \[>\Delta {{U}^{o}}\]

    C) \[<\Delta {{U}^{o}}\]

    D) = 0

    View Answer play_arrow
  • question_answer85) In the sample of soft drink, the concentration of \[{{H}^{+}}\] ion is \[3.8\times {{10}^{-3}}M\]. Its pH is

    A) 2

    B) 2.42

    C) 3

    D) 3.42

    View Answer play_arrow
  • question_answer86) Which one of the following alkali metals gives hydrated salts?

    A) Li

    B) Na

    C) K

    D) Cs

    View Answer play_arrow
  • question_answer87) Boric acid is polymeric due to

    A) its acidic nature

    B) the presence of hydrogen bonds

    C) its monobasic nature

    D) its geometry

    View Answer play_arrow
  • question_answer88) Which one of the following carbocation is most stable?

    A) \[{{(C{{H}_{3}})}_{3}}C\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    B) \[{{(C{{H}_{3}})}_{3}}\overset{+}{\mathop{C}}\,\]

    C) \[C{{H}_{3}}C{{H}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    D) \[C{{H}_{3}}\overset{+}{\mathop{C}}\,HC{{H}_{2}}C{{H}_{3}}\]

    View Answer play_arrow
  • question_answer89) The best and latest technique for isolation, purification and separation of organic compounds is

    A) crystallisation

    B) distillation

    C) sublimation

    D) chromatography

    View Answer play_arrow
  • question_answer90) Which one of the following vitamins is water soluble?

    A) Vitamin B

    B) Vitamin E

    C) Vitamin K

    D) Vitamin A

    View Answer play_arrow
  • question_answer91) Which one of the following on reduction with lithium aluminium hydride yield a secondary amine?

    A) Nitroethane

    B) Methyl isocyanide

    C) Acetamide

    D) Methyl cyanide

    View Answer play_arrow
  • question_answer92) Which one of the following ionic species has the greatest proton affinity to form stable compound?

    A) \[H{{S}^{-}}\]

    B) \[NH_{2}^{-}\]

    C) \[{{F}^{-}}\]

    D) \[{{I}^{-}}\]

    View Answer play_arrow
  • question_answer93) The reaction, \[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-O-C{{H}_{2}}C{{H}_{3}}\] \[+HI\xrightarrow{\Delta }\]? Which of the following compound will be formed?

    A) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-I+C{{H}_{3}}C{{H}_{2}}OH\]

    B) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}+C{{H}_{3}}C{{H}_{2}}OH\]

    C) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}OH+C{{H}_{3}}C{{H}_{3}}\]

    D) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}OH+C{{H}_{3}}C{{H}_{2}}I\]

    View Answer play_arrow
  • question_answer94) Predict the product C obtained in the following reaction of butyne -1. \[C{{H}_{3}}C{{H}_{2}}-C\equiv CH+HCl\xrightarrow{{}}B\xrightarrow{HI}C\]

    A) \[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}-C{{H}_{2}}I\]

    B) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-\overset{\begin{smallmatrix} I \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}}\,}}\,-H\]

    C) \[C{{H}_{3}}C{{H}_{2}}CH-\overset{\begin{smallmatrix} I \\ | \end{smallmatrix}}{\mathop{C}}\,{{H}_{2}}Cl\]

    D) \[C{{H}_{3}}C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix} I \\ | \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}\]

    View Answer play_arrow
  • question_answer95) Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?

    A) Argentite

    B) Galena

    C) Copper pyrite

    D) Sphalerite

    View Answer play_arrow
  • question_answer96) The equilibrium constant of the reaction; \[Cu(s)+2A{{g}^{+}}(aq)\xrightarrow{{}}C{{u}^{2+}}(aq)+2Ag(s)\]\[{{E}^{o}}=0.46\,V\]at 298 K

    A) \[2.4\times {{10}^{10}}\]

    B) \[2.0\times {{10}^{10}}\]

    C) \[4.0\times {{10}^{10}}\]

    D) \[4.0\times {{10}^{15}}\]

    View Answer play_arrow
  • question_answer97) In the preparation of alkene from alcohol using \[A{{l}_{2}}{{O}_{3}}\] which is effective factor?

    A) Porosity of \[A{{l}_{2}}{{O}_{3}}\]

    B) Temperature

    C) Concentration

    D) Surface area of Al 20 3

    View Answer play_arrow
  • question_answer98) Which one of the following is correct?

    A) On reduction any aldehyde gives secondary alcohol

    B) Reaction of vegetable oil with \[{{H}_{2}}S{{O}_{4}}\] gives glycerine

    C) Alcoholic iodine with \[NaOH\] gives iodoform

    D) Sucrose on reaction with \[NaCl\] gives invert sugar

    View Answer play_arrow
  • question_answer99) Which one of the following is correct about H-bonding in nucleofide?

    A) A-T,G-C

    B) A-G, T-C

    C) G-T/A-C

    D) A-A, T-T

    View Answer play_arrow
  • question_answer100) Change in enthalpy for the reaction, \[2{{H}_{2}}{{O}_{2}}(l)\xrightarrow{{}}2{{H}_{2}}O(l)+{{O}_{2}}(g)\] if heat of formation of \[{{H}_{2}}{{O}_{2}}(l)\] and \[{{H}_{2}}O(l)\]are - 188 and -286 kJ/mol respectively is

    A) -196 kJ/mol

    B) +196 kJ/mol

    C) +948 kJ/mol

    D) -948 kJ/mol

    View Answer play_arrow
  • question_answer101) The biological definition of a species depends on

    A) the geographical distribution of two groups of organisms

    B) reproductive isolation of two groups of organisms

    C) anatomical and development differences between the two groups of organisms

    D) difference in the adoptation of two groups of organisms

    View Answer play_arrow
  • question_answer102) Binomial nomenclature of plants was given by

    A) Engler

    B) Linnaeus

    C) Prantl

    D) Both [a] and [b]

    View Answer play_arrow
  • question_answer103) Which of the following is not characteristic of Gram positive bacteria?

    A) Cell wall is smooth

    B) Mesosomes are distinctive prominent

    C) Basal body of flagellum contains two rings

    D) Murein content of cell wall is 70-80%.

    View Answer play_arrow
  • question_answer104) During conjugation in Paramecium

    A) out of the four micronuclei formed, three degenerate

    B) out of six macronuclei formed, four degenerate

    C) zygote nucleus undergoes eight successive division in each conjugant

    D) out of 16 nuclei; only four degenerate

    View Answer play_arrow
  • question_answer105) Which one of the following viruses contains both DNA and RNA?

    A) Cyanophage

    B) Herpes virus

    C) Leuko virus

    D) Polio virus

    View Answer play_arrow
  • question_answer106) Oil is reserve food in

    A) Chlamydomonas

    B) Oedogonium

    C) Vaucheria

    D) Chara

    View Answer play_arrow
  • question_answer107) In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result

    A) there is no change in success rate of fertilization

    B) there is high degree of sterility

    C) one can conclude that the plant is apomictic

    D) self-fertilization is prevented

    View Answer play_arrow
  • question_answer108) In Pinus, male cone bears a large number of

    A) ligules

    B) anthers

    C) microsporophylls

    D) megasporophylls

    View Answer play_arrow
  • question_answer109) The canal system is characteristic feature of

    A) helminthes

    B) coelenterates

    C) sponges

    D) echinoderms

    View Answer play_arrow
  • question_answer110) The excretory cells,-that are found in Platyhelminthes are

    A) protonephridia

    B) flame cells

    C) solenocytes

    D) All of the above

    View Answer play_arrow
  • question_answer111) The pseudocoelomate among these is

    A) Porifera

    B) Annelida

    C) Aschelminthes

    D) Mollusca

    View Answer play_arrow
  • question_answer112) Radula is found in

    A) Pila sp

    B) Chiton sp

    C) Lamellidens sp

    D) Pinctada sp

    View Answer play_arrow
  • question_answer113) In a plant, the peduncle is elongated and it bears pedicillate flowers. The older flowerslie towards the base and the younger ones near the apex. The growth of the peduncle continues and more flowers are added. The inflorescence is

    A) raceme

    B) corymb

    C) umbel

    D) head

    View Answer play_arrow
  • question_answer114) Which of these is an example for zygomorhic flower with imbricate aestivation?

    A) Calotropis

    B) Mustard

    C) Canna

    D) Cassia

    View Answer play_arrow
  • question_answer115) Maize grain is

    A) seed

    B) embryo

    C) ovule

    D) fruit

    View Answer play_arrow
  • question_answer116) At maturity, the sieve plates become impregnated with

    A) cellulose

    B) pectin

    C) suberin

    D) callose

    View Answer play_arrow
  • question_answer117) Duramen is present in

    A) inner region of secondary wood

    B) part of sapwood

    C) outer region of secondary wood

    D) region of pericycle

    View Answer play_arrow
  • question_answer118) The type of epithelial cells, which line the Inner surface of fallopian tubes, bronchioles and small bronchi are known as

    A) squamous epithelium

    B) columnar epithelium

    C) ciliated epithelium

    D) cubical epithelium

    View Answer play_arrow
  • question_answer119) Largest single mass of lymphatic tissue in the body is

    A) lung

    B) spleen

    C) liver

    D) kidney

    View Answer play_arrow
  • question_answer120) The plasmamembrane consists mainly of

    A) phospholipids embedded in a protein bilayer

    B) proteins embedded in a phospholipid bilayer

    C) proteins embedded in a polymer of glucose molecules

    D) proteins embedded in a carbohydrate bilayer

    View Answer play_arrow
  • question_answer121) Fluidity of bio-membranes can be shown by

    A) electron microscope

    B) tissue culture

    C) phase-contrast microscope

    D) fluorescence microscope

    View Answer play_arrow
  • question_answer122) Synaptonemal complex is formed during

    A) pachytene

    B) zygotene

    C) leptotene

    D) diplotene

    View Answer play_arrow
  • question_answer123) Ascent of sap in plants was demonstrated by

    A) Girdling experiment

    B) Ganongs experiment

    C) Went experiment

    D) Lever auxanometer

    View Answer play_arrow
  • question_answer124) Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?

    A) Casuarina equisetifolia

    B) Crotalariajuncea

    C) Cycasrevoluta

    D) Cicer arietinum

    View Answer play_arrow
  • question_answer125) Choose the correct statement.

    A) The \[{{C}_{4}}\]-plants do not have RUBISCO

    B) Carboxylation of RuBP leads to the formation of PGA and phosphoglycolate

    C) Carboxylation of phosphoenol pyruvate results in the formation of \[{{C}_{4}}\]-acids

    D) Decarboxylation of \[{{C}_{4}}\]-acids occur in the mesophyll cells

    View Answer play_arrow
  • question_answer126) Which one is not correct about Krebs cycle?

    A) It is also called citric acid cycle

    B) The intermediate compound, which links glycolysis with Krebs cycle is malic acid

    C) It occurs in mitochondria

    D) It starts with six carbon compound

    View Answer play_arrow
  • question_answer127) Response of plants due to reversible turgor change in pulvinus is

    A) nyctinastic

    B) seismonastic

    C) heptonastic

    D) photonastic

    View Answer play_arrow
  • question_answer128) The bioassay of auxin is

    A) Avena curvature test

    B) callus formation

    C) culture of fungus

    D) seed dormancy

    View Answer play_arrow
  • question_answer129) In intestine, food materials are absorbed through

    A) villi

    B) sub-tentacular cells

    C) sub-mucosa

    D) gastric glands

    View Answer play_arrow
  • question_answer130) The essential vitamin for blood coagulation is

    A) vitamin-\[{{B}_{6}}\]

    B) vitamin-A

    C) vitamin-K

    D) vitamin-E

    View Answer play_arrow
  • question_answer131) Severe Acute Respiratory Syndrome (SARS)

    A) is caused by a variant of Pneumococcus pneumoniae

    B) is caused by a variant of the common cold virus (corona virus)

    C) is an acute form of asthma

    D) affects non-vegetarians much faster than vegetarians

    View Answer play_arrow
  • question_answer132) 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

    View Answer play_arrow
  • question_answer133) A person who is on a long hunger strike and is surviving only on water, will have

    A) more sodium in his urine

    B) less amino acids in his urine

    C) more glucose in his blood

    D) less urea in his urine

    View Answer play_arrow
  • question_answer134) Bones become fragile in

    A) osteoporosis

    B) gout

    C) arthritis

    D) None of these

    View Answer play_arrow
  • question_answer135) Injury to vagus nerve in human is not likely to affect

    A) tongue movements

    B) gastrointestinal movements

    C) pancreatic secretion

    D) cardiac movements

    View Answer play_arrow
  • question_answer136) Congenital removal of thyroid will cause

    A) myxoedema

    B) cretinism

    C) Both [a] and [b]

    D) exophthalmic goiter

    View Answer play_arrow
  • question_answer137) Which of the following hormones is not a secretory product of human placenta?

    A) Human chorionic gonadotropin

    B) Prolactin

    C) Oestrogen

    D) Progesterone

    View Answer play_arrow
  • question_answer138) What does the filiform apparatus do at the entrance into ovule?

    A) It helps in the entry of pollen tube into a synergid

    B) It prevents entry of more than one pollen tube into the embryo sac

    C) It brings about opening of the pollen tube

    D) It guides pollen tube from a synergid to egg

    View Answer play_arrow
  • question_answer139) Graafian follicle contains

    A) oogonial cells

    B) corpus luteum

    C) theca externa and theca interna

    D) corpus albicans

    View Answer play_arrow
  • question_answer140) Which one of the following statements about morula in humans is correct?

    A) It has almost equal quantity of cytoplasm as an uncleaved zygote but much more DNA

    B) It has far less cytoplasm as well as less DNA than in an uncleaved zygote

    C) It has more or less equal quantity of cytoplasm and DNA as in uncleaved zygote

    D) lt has more cytoplasm and more DNA than an uncleaved zygote

    View Answer play_arrow
  • question_answer141) Incomplete dominance is shown by

    A) primrose

    B) Mirabilis

    C) Helianthus

    D) China rose

    View Answer play_arrow
  • question_answer142) During translation initiation in prokaryotes, a GTP molecule is needed in

    A) association of 30 S, mRNA with formyl-met-tRNA

    B) association of 50 S sub-unit of ribosome with initiation complex

    C) formation of formyl-met-tRNA

    D) binding of 30 sub-units of ribosome with mRNA

    View Answer play_arrow
  • question_answer143) Thorns of Baugainvillea and tendrils of Cucurbita are examples of

    A) analogous organs

    B) homologous organs

    C) vestigial organs

    D) retrogressive evolution

    View Answer play_arrow
  • question_answer144) A good example for organic fertilizer, which improves phosphorus uptake, is

    A) VAM fungi

    B) Rhizobium

    C) Azospirillum

    D) None of these

    View Answer play_arrow
  • question_answer145) What is a keystone species?

    A) A species which adds up to only a small proportion of the total biomass of a community, yet has a huge impact on the communitys organization and survival

    B) A common species that has plenty of biomass, yet has a fairly low impact on the communitys organization

    C) A rare species that has minimal impact on the biomass and on other species in the community

    D) A dominant species that constitutes a large proportion of the biomass and which affects many other species

    View Answer play_arrow
  • question_answer146) The 10% energy transfer law of food chain was given by

    A) Lederberg

    B) Lindemann

    C) Weismann

    D) Lindley

    View Answer play_arrow
  • question_answer147) Soil formed after leaching and rich in Al and Fe is

    A) alluvial

    B) podsol

    C) laterite

    D) None of these

    View Answer play_arrow
  • question_answer148) Chipko movement is related to

    A) Swaminathan

    B) Bahuguna

    C) Odum

    D) Misra

    View Answer play_arrow
  • question_answer149) Ozone layer is being destroyed by

    A) \[S{{O}_{2}}\]

    B) \[N{{O}_{2}}\]

    C) CFCs

    D) photochemical smog

    View Answer play_arrow
  • question_answer150) The protein products of the following Bt toxin genes cry I Ac and cry II Ab are responsible for controlling

    A) Bollworm

    B) roundworm

    C) Moth

    D) fruit fly

    View Answer play_arrow



You need to login to perform this action.
You will be redirected in 3 sec spinner