Solved papers for JCECE Medical JCECE Medical Solved Paper-2007

done JCECE Medical Solved Paper-2007

  • question_answer1) A simple pendulum is made of a body which a hollow sphere is containing mercury suspended by means of a wire. If a little mercury is drained off, the period of pendulum will

    A) remain unchanged

    B) increase

    C) decrease

    D) become erratic

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  • question_answer2) Two balloons are filled, one with pure He gas and the other by air, respectively. If the pressure and temperature of these balloons are same then the number of molecules per unit volume is

    A) more in the He filled balloon

    B) same in both balloons

    C) more in air filled balloon

    D) in the ratio of 1 : 4

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  • question_answer3) Which of the following logic gates is an universal gate?

    A) OR

    B) NOT

    C) AND

    D) NAND

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  • question_answer4) We consider a thermodynamic system. If \[\text{ }\!\!\Delta\!\!\text{ U}\]represents the increase in its internal energy and W the work done by the system, which of the following statements is true?

    A) \[\Delta U=-W\] in an adiabatic process

    B) \[\Delta U=W\] in an isothermal process

    C) \[\Delta U=-W\]in an isothermal process

    D) \[\Delta U=W\] in an adiabatic process

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  • question_answer5) Aerofils are so designed that the speed of air

    A) on top side is more than on lower side

    B) on fop side is less than on lower side,

    C) is same on both sides

    D) is turbulent

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  • question_answer6) According to Bernoullis equation \[\frac{P}{\rho g}+h+\frac{1}{2}\frac{{{v}^{2}}}{g}=\text{constant}\] The terms A, B and C are generally called respectively:

    A) gravitational head, pressure head and velocity head

    B) gravity, gravitational head and velocity head

    C) pressure head, gravitational head and velocity head

    D) gravity, pressure and velocity head

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  • question_answer7) The time of reverberation of a room A is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room A?

    A) 2

    B) 4

    C) \[\frac{1}{2}\]

    D) 1

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  • question_answer8) For sky wave propagation of 10 MHz signal, what should be the minimum electron density in ionosphere?

    A) \[\tilde{\ }1.2\times {{10}^{12}}{{m}^{-3}}\]

    B) \[\tilde{\ }{{10}^{6}}\,{{m}^{-3}}\]

    C) \[\tilde{\ }{{10}^{14}}\,{{m}^{-3}}\]

    D) \[\tilde{\ }{{10}^{22}}\,{{m}^{-3}}\]

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  • question_answer9) If the mass of moon is \[\frac{\text{M}}{\text{81}}\text{,}\]where M is the mass of earth, find the distance of the point from the moon, where gravitational field due to earth and moon cancel each other. Given that distance between earth and moon is 60R, where R is the radius of earth.

    A) 6R

    B) BR

    C) 2R

    D) 4R

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  • question_answer10) 27 small drops each having charge q and radius r coalesce to from big drop. How many times charge and capacitance will become?

    A) 3, 27

    B) 27, 3

    C) 27, 27

    D) 3, 3

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  • question_answer11) The magnetic moment has dimensions of

    A) \[[LA]\]

    B) \[[{{L}^{2}}A]\]

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

    D) \[[{{L}^{2}}{{T}^{-1}}A]\]

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  • question_answer12) Which of the following circular rods, (given radius r and length\[l\]) each made of the same material and whose ends are maintained at the same temperature will conduct most heat?

    A) \[r=2{{r}_{0}};l=2{{l}_{0}}\]

    B) \[r=2{{r}_{0}};l={{l}_{0}}\]

    C) \[r={{r}_{0}};l={{l}_{0}}\]

    D) \[r={{r}_{0}};l=2{{l}_{0}}\]

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  • question_answer13) For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is

    A) 2

    B) \[\frac{1}{2}\]

    C) \[\frac{1}{\sqrt{2}}\]

    D) \[\sqrt{2}\]

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  • question_answer14) The current in the given circuit is

    A) 0.3 A

    B) 0.1 A

    C) 0.4 A

    D) 0.2 A

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  • question_answer15) Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show

    A) no interference

    B) interference with bright band

    C) interference with dark bands

    D) interference in which breadth of the fringe will be slightly increased

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  • question_answer16) When a charged particle moving with velocity \[\text{\vec{v}}\]is subjected to a magnetic field of induction \[\text{\vec{B},}\] the force on it is non-zero. This implies that

    A) angle between \[\text{\vec{v}}\]and \[\text{\vec{B},}\] is necessarily \[90{}^\circ \]

    B) angle between\[\text{\vec{v}}\]and\[\text{\vec{B},}\]can have any value other than \[\text{9}{{\text{0}}^{o}}\]

    C) angle between\[\text{\vec{v}}\]and \[\text{\vec{B},}\]can have any value other than zero and \[{{180}^{o}}\]

    D) angle between \[\text{\vec{v}}\]and \[\text{\vec{B},}\]is either zero or \[{{180}^{o}}\]

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  • question_answer17) A article moves along a straight line OX. At a time t (in seconds) the distance \[x\](in metres) of the particle from O is given by \[x=40+12t-{{t}^{3}}\] How long would the particle travel before coming to rest?

    A) 24 m

    B) 40 m

    C) 56 m

    D) 16 m

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  • question_answer18) Which one of the following statements is true?

    A) Both light and sound waves in air are transverse

    B) The sound waves in air are longitudinal while the light waves are transverse

    C) Both light and sound waves in air are longitudinal

    D) Both light and sound waves can travel in vacuum

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  • question_answer19) When power is drawn from the secondary coil of the transformer, the dynamic resistance

    A) increases

    B) decreases

    C) remains unchanged

    D) changes erratically

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  • question_answer20) A reference frame attached to the earth

    A) is an inertial frame by definition

    B) cannot be an inertial frame because earth is revolving round the sun

    C) is an inertial frame because Newtons laws are applicable

    D) is an inertial frame because the earth is rotating about its own axis

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  • question_answer21) Pressure of an ideal gas is increased by keeping temperature constant. What is the effect on kinetic energy of molecules?

    A) Increase

    B) Decrease

    C) No change

    D) Cant be determined

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  • question_answer22) What maximum frequency can be reflected from ionosphere?

    A) 5 MHz

    B) 6 GHz

    C) 5 kHz

    D) 500 MHz

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  • question_answer23) A telescope has focal length of objective and eyepiece as 200 cm and 5 cm respectively. What is magnification of telescope?

    A) 40

    B) 80

    C) 50

    D) 0.01

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  • question_answer24) A small disc of .radius 2 cm is cut from a disc of radius 6 cm. If the distance between their centres is 3.2 cm, what is the shift in the centre of mass of the disc?

    A) 0.4 cm

    B) 2.4 cm

    C) 1.8 cm

    D) 1.2 cm

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  • question_answer25) Which of the following is not a process involved in fabrication of 1C?

    A) Polymerization

    B) Diffusion

    C) Photolithography

    D) Metallisation

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  • question_answer26) Permanent magnet has properties retentivity and coercivity respectively

    A) high-high

    B) low-low

    C) . low-high

    D) high-low

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  • question_answer27) Hydrogen bomb is based upon

    A) fission

    B) fusion

    C) chemical reaction

    D) transmutation

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  • question_answer28) What is not true for equipotential surface for uniform electric field?

    A) Equipotential surface is flat

    B) Equipotential surface is spherical

    C) Electric lines are perpendicular to equipotential surface

    D) Work done is zero

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  • question_answer29) A closed organ pipe of length 20 cm is sounded with tuning fork in resonance. What is the frequency of tuning fork? \[(v=332\,m/s)\]

    A) 300 Hz

    B) 350 Hz

    C) 375 Hz

    D) 415 Hz

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  • question_answer30) Two identical springs of spring constant k are connected in series and parallel as shown in figure. A mass M is suspended from them. The ratio of their frequencies of vertical oscillation will be

    A) 2:1

    B) 1.5

    C) 2.1

    D) 2.5

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  • question_answer31) The area of the acceleration-displacement curve of a body gives

    A) impulse

    B) change in momentum per unit mass

    C) change in KE per unit mass

    D) total change in energy

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  • question_answer32) The speed of earths rotation about its axis is \[\omega .\]Its speed is increased to\[x\]times to make the effective acceleration due to gravity equal to zero at the equator. Then \[x\] is

    A) 1

    B) 8.5

    C) 17

    D) 34

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  • question_answer33) Hard X-rays for the study of fractures in bones should have a minimum wavelength of \[{{10}^{-11}}m.\] The accelerating voltage for electrons in X-ray machine should be

    A) \[<\,124\,kV\]

    B) \[>\,124\,kV\]

    C) between 60 kV and 70 kV

    D) = 100 kV

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  • question_answer34) In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum

    A) wavelength

    B) frequency

    C) amplitude

    D) angle of incidence

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  • question_answer35) A capacitor having capacitance \[1\,\mu F\]with air, is filled with two dielectrics as shown. How many times capacitance will increase?

    A) 12

    B) 6

    C) 8/3

    D) 3

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  • question_answer36) A leaf which contains only green pigments, is illuminated by a laser light of wavelength \[\text{0}\text{.6328 }\!\!\mu\!\!\text{ m}\text{.}\]It would appear to be

    A) brown

    B) black

    C) red

    D) green

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  • question_answer37) The operation of a nuclear reactor is said to be critical, if the multiplication factor \[(k)\] has a value

    A) 1

    B) 1.5

    C) 2.1

    D) 2.5

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  • question_answer38) A galvanometer having a resistance of \[8\,\Omega \]is shunted by a wire of resistance \[2\,\Omega .\] If the total current is 1 A, the part of it passing through the shunt will be

    A) 0.25 A

    B) 0.8 A

    C) 0.2 A

    D) 0.5 A

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  • question_answer39) Flash light equipped with a new set of batteries, produces bright white light. As the batteries wear out

    A) the light intensity gets reduced with no change in its colour

    B) light colour changes first to yellow andthen red with no change in intensity

    C) it stops working suddenly while giving white light

    D) colour changes to red and also intensity gets reduced

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  • question_answer40) If alpha, beta and gamma rays carry same momentum, which has the longest wavelength?

    A) Alpha rays

    B) Beta rays

    C) Gamma rays

    D) None, all have same wavelength

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  • question_answer41) An amplifier has a voltage gain \[{{A}_{v}}=1000.\]The voltage gain in dB is

    A) 30 dB

    B) 60 dB

    C) 3 dB

    D) 20 dB

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  • question_answer42) When you make ice cubes, the entropy of water

    A) does not change

    B) increases

    C) decreases

    D) may either increase or decrease depending on the process used

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  • question_answer43) Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is

    A) 1 : 16

    B) 4 : 1

    C) 1:4

    D) 1 : 1

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  • question_answer44) If equation of a sound wave is \[y=0.0015\sin (62.8x+314t)\] then its wavelength will be

    A) 0.1 unit

    B) 2 unit

    C) 0.3 unit

    D) 0.2 unit

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  • question_answer45) A projectile is thrown in the upward direction making an angle of \[{{60}^{0}}\] with the horizontal direction with a velocity of \[147\,m{{s}^{-1}}.\] Then the time after which its inclination with the horizontal is \[{{45}^{o}},\] is

    A) 15s

    B) 10.98 s

    C) 5.49 s

    D) 2.745 s

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  • question_answer46) A motor cycle is going on an overbridge of radius R. The driver maintains a constant speed. As the motor cycle is ascending on the overbridge, the normal force on it

    A) increases

    B) decreases

    C) remains the same

    D) fluctuates erratically

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  • question_answer47) If we throw a body upwards with velocity of \[4\text{ }m/s,\] at what height does its kinetic energy reduce to half of the initial value? (Take\[g=10\,m{{s}^{-2}}\])

    A) 4 m

    B) 2 m

    C) 1 m

    D) 0.4 m

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  • question_answer48) Two glass plates are separated by water. If surface tension of water is 75 dynes/cm and area of each plate wetted by water is \[\text{8}\,\text{c}{{\text{m}}^{\text{2}}}\]and the distance between the plates is 0.12 mm, then the force applied to separate the two plates is

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

    B) \[{{10}^{4}}\] dyne

    C) \[{{10}^{5}}\]dyne

    D) \[{{10}^{6}}\]dyne

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  • question_answer49) Which of the following is true for rays coming from infinity?

    A) Two images are formed

    B) Continuous image is formed between focal points of upper and lower lens

    C) One image is formed

    D) None of the above

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  • question_answer50) The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be

    A) horizontal

    B) vertical

    C) clockwise

    D) anticlockwise

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  • question_answer51) Calcium carbide reacts with \[{{\text{H}}_{\text{2}}}\text{O}\]to produce

    A) ethane

    B) methane

    C) ethylene

    D) acetylene

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  • question_answer52) Propyne and propene can be distinguished by

    A) \[\text{dil}\text{.}\,\text{KMn}{{\text{O}}_{4}}\]

    B) \[\text{conc}\text{.}\,{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

    C) \[\text{AgN}{{\text{O}}_{\text{3}}}\]in ammonia

    D) \[\text{B}{{\text{r}}_{\text{2}}}\]in \[\text{CC}{{\text{l}}_{\text{4}}}\]

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  • question_answer53) Oxidation number of Fe in\[\text{F}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}\] is

    A) \[\frac{1}{2}\]

    B) \[\frac{2}{6}\]

    C) \[\frac{8}{3}\]

    D) \[\frac{3}{2}\]

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  • question_answer54) Bauxite is an ore of

    A) Al

    B) Ca

    C) Cu

    D) Ni

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  • question_answer55) The best source of vitamin A is

    A) beans

    B) pulses

    C) orange

    D) carrot

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  • question_answer56) Plaster of Paris is

    A) \[CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O\]

    B) \[CaS{{O}_{4}}.2{{H}_{2}}O\]

    C) \[CaS{{O}_{4}}.{{H}_{2}}O\]

    D) \[CaS{{O}_{4}}.4{{H}_{2}}O\]

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  • question_answer57) Penicillin is

    A) analgesic

    B) antipyretic

    C) antimalarials

    D) antibiotic

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  • question_answer58) The most stable compound is

    A) \[\text{LiF}\]

    B) \[\text{ }\!\!~\!\!\text{ LiCl}\]

    C) \[\text{ }\!\!~\!\!\text{ LiBr}\]

    D) \[\text{LiI}\]

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  • question_answer59) Heavy water is

    A) \[CaS{{O}_{4}}\]

    B) water contain \[CaS{{O}_{4}},MgS{{O}_{4}}\]

    C) \[{{D}_{2}}O\]

    D) water contain\[CaC{{O}_{3}}\]

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  • question_answer60) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[\text{C}{{\text{u}}_{\text{2}}}\text{O}\] with

    A) \[FeS\]

    B) \[CO\]

    C) \[C{{u}_{2}}S\]

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

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  • question_answer61) \[\text{Ba}{{\text{O}}_{\text{2}}}\]and ozone reacts to produce

    A) \[\text{Ba}\]

    B) \[B{{a}_{2}}{{O}_{3}}\]

    C) \[BaO\]

    D) \[Ba{{(OH)}_{3}}\]

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  • question_answer62) Heisenberg uncertainty principle can be explained as

    A) \[\Delta x\ge \frac{\Delta p\times h}{4\pi }\]

    B) \[\Delta x\,\times \,\Delta p\ge \frac{h}{4\pi }\]

    C) \[\Delta x\,\times \,\Delta p\ge \frac{h}{\pi }\]

    D) \[\,\Delta p\ge \frac{\pi h}{\,\Delta x}\]

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  • question_answer63) For decolourisation of 1 mole of \[\text{KMn}{{\text{O}}_{\text{4}}}\text{,}\]the moles of \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]required is

    A) \[\frac{1}{2}\]

    B) \[\frac{3}{2}\]

    C) \[\frac{5}{2}\]

    D) \[\frac{7}{2}\]

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  • question_answer64) Bleaching powder is obtained by treating \[\text{C}{{\text{l}}_{\text{2}}}\] with

    A) \[Ca{{(OH)}_{2}}\]

    B) \[CaO\]

    C) \[CaC{{O}_{3}}\]

    D) \[CaC{{l}_{2}}\]

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  • question_answer65) Magnalium contains

    A) \[\text{Mg}\,\text{+}\,\text{Al}\]

    B) \[\text{ }\!\!~\!\!\text{ Mg}\,\text{+}\,\text{Cu}\]

    C) \[\text{Mg}\,\text{+}\,\text{Fe}\]

    D) \[\text{ }\!\!~\!\!\text{ Mg}\,\text{+ Mn}\]

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  • question_answer66) The de-Broglie wavelenght of a particle with mass 1 kg and velocity 100 m/s is

    A) \[6.6\,\,\times \,\,{{10}^{-33}}\,m\]

    B) \[6.6\,\,\times \,\,{{10}^{-36}}\,m\]

    C) \[6.6\,\,\times \,\,{{10}^{33}}\,m\]

    D) \[3.3\,\,\times \,\,{{10}^{-36}}\,m\]

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  • question_answer67) The volume of a gas measured at \[\text{27}{{\,}^{\text{o}}}\text{C}\]and 1 atm pressure is 10 L. To reduce the volume to 2L at 1 atm. pressure, the temperature required is

    A) 60 K

    B) 75 K

    C) 150 K

    D) 225 K

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  • question_answer68) Isotonic solutions have

    A) same vapour pressure

    B) same osmotic pressure

    C) same boiling point

    D) same temperature

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  • question_answer69) Epsom salt is

    A) \[BaS{{O}_{4}}.2{{H}_{2}}O\]

    B) \[CaS{{O}_{4}}.{{H}_{2}}O\]

    C) \[MgS{{O}_{4}}.2{{H}_{2}}O\]

    D) \[MgS{{O}_{4}}.7{{H}_{2}}O\]

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  • question_answer70) Paracetamol is an

    A) analgesic

    B) antipyretic

    C) both [a] and [b]

    D) none of the above

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  • question_answer71) The number of moles of oxygen obtained by the electrolytic decomposition of 108 g water is

    A) 2.5

    B) 3

    C) 5

    D) 7.5

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  • question_answer72) The change in entropy for the fusion of 1 mole of ice is [\[\text{mp}\,\text{of}\,\text{ice}\,\,\text{=}\,\,\text{273}\,\text{K,}\], molar enthalpy of fusion for ice\[=\,\,6.0\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\]]

    A) \[11.73\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    B) \[18.84\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    C) \[21.97\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

    D) \[24.47\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

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  • question_answer73) Which does not give a precipitate with \[\text{AgN}{{\text{O}}_{\text{3}}}\]solution?

    A) \[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]

    B) \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]

    C) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\]

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

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  • question_answer74) Total volume of atoms present in a face centred cubic unit cell of a metal is (r is atomic radius)

    A) \[\frac{16}{3}\pi {{r}^{3}}\]

    B) \[\frac{20}{3}\pi {{r}^{3}}\]

    C) \[\frac{24}{3}\pi {{r}^{3}}\]

    D) \[\frac{12}{3}\pi {{r}^{3}}\]

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  • question_answer75) Pure silicon doped with phosphorus is a

    A) metallic conductor

    B) insulator

    C) n-type semiconductor

    D) p-type semiconductor

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  • question_answer76) Which of the following is a biodegradable polymer?

    A) Cellulose

    B) Polythene

    C) Polyvinyl chloride

    D) Nylon 6

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  • question_answer77) What is X in the following nuclear reaction? \[{{\,}_{7}}N{{\,}^{14}}+{{\,}_{1}}N{{\,}^{1}}\xrightarrow[{}]{{}}{{\,}_{8}}{{O}^{15}}+X\]

    A) \[{{\,}_{0}}{{n}^{1}}\]

    B) \[{{\,}_{-1}}{{e}^{0}}\]

    C) \[{{\,}_{+\,1}}{{e}^{0}}\]

    D) \[\gamma \]

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  • question_answer78) Solubility product of \[\text{PbC}{{\text{l}}_{\text{2}}}\]at \[298\,K\]is \[1\times {{10}^{-6}}.\] At this temperature solubility of \[\text{PbC}{{\text{l}}_{\text{2}}}\]in mol/L is

    A) \[{{(1\,\times \,{{10}^{-6}})}^{1/2}}\]

    B) \[{{(1\,\times \,{{10}^{-6}})}^{1/3}}\]

    C) \[{{(0.25\,\times \,{{10}^{-6}})}^{1/3}}\]

    D) \[{{(0.25\,\times \,{{10}^{-6}})}^{1/2}}\]

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  • question_answer79) The pH of a 0.001 M solution of \[\text{HCl}\]is

    A) 0

    B) 3

    C) 5

    D) 10

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  • question_answer80) Gold number is associated with

    A) amount of gold

    B) protective colloids

    C) purple of cassius

    D) electrophoresis

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  • question_answer81) Noble gases are used in discharge tubes to give different colours. Reddish-orange glow is due to

    A) Ar

    B) Ne

    C) Xe

    D) Kr

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  • question_answer82) The set representing the correct order for first ionisation potential is

    A) \[\text{ }\!\!~\!\!\text{ K}\,\text{}\,\text{Na}\,\text{}\,\text{Li}\]

    B) \[\text{ }\!\!~\!\!\text{ Be Mg Ca}\]

    C) \[\text{ }\!\!~\!\!\text{ B C N}\]

    D) \[Ge>Si>C\]

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  • question_answer83) Dry ice is

    A) solid\[\text{C}{{\text{O}}_{\text{2}}}\]

    B) solid camphor

    C) solid\[\text{S}{{\text{O}}_{\text{2}}}\]

    D) solid\[\text{N}{{\text{O}}_{\text{2}}}\]

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  • question_answer84) Methanol and ethanol are miscible in water due to

    A) covalent character

    B) hydrogen bonding character

    C) oxygen bonding character

    D) none of the above

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  • question_answer85) Which of the following does not have optical isomer?

    A) \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]

    B) \[[Co{{(e{{n}_{3}})}_{3}}]C{{l}_{2}}\]

    C) \[[Co(e{{n}_{2}})C{{l}_{2}}]Cl\]

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

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  • question_answer86) IUPAC name of the following compound

    A) \[\text{N,}\,\text{N}-\] dimethyl cyclopropaneear box amide

    B) N-methyl cyclopropan amide

    C) cyclopropion amide

    D) none of the above

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  • question_answer87) The product of following reaction is \[2C{{H}_{3}}MgBr+C{{H}_{2}}O\xrightarrow{{}}\]

    A) \[C{{H}_{3}}OH\]

    B) \[{{C}_{2}}{{H}_{5}}OH\]

    C) \[C{{H}_{4}}\]

    D) \[{{C}_{2}}{{H}_{6}}\]

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  • question_answer88) Freon used as refrigerant is

    A) \[C{{F}_{2}}=C{{F}_{2}}\]

    B) \[C{{H}_{2}}{{F}_{2}}\]

    C) \[CC{{l}_{2}}{{F}_{2}}\]

    D) \[C{{F}_{4}}\]

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  • question_answer89) Lucas reagent is

    A) anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{N}{{\text{H}}_{\text{3}}}\]

    B) anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{CaC}{{\text{l}}_{\text{2}}}\]

    C) anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and cone. \[\text{HCl}\]

    D) anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{HCl}\] gas

    View Answer play_arrow
  • question_answer90) The enzyme which can catalyse the conversion of glucose to ethanol is

    A) zymase

    B) invertase

    C) maltase

    D) diastase

    View Answer play_arrow
  • question_answer91) When dihydroxy acetone reacts with HI04, the product is/are

    A) HCHO

    B) HCOOH

    C) HCHO and HCOOH

    D) HCHO and \[\text{C}{{\text{O}}_{2}}\]

    View Answer play_arrow
  • question_answer92) Which of the following does not reduce Fehlings solution?

    A) Benzaldehyde

    B) Formic acid

    C) Glucose

    D) Fructose

    View Answer play_arrow
  • question_answer93) Sodium formate on heating gives

    A) oxalic acid and \[{{\text{H}}_{\text{2}}}\]

    B) sodium oxalate and \[{{\text{H}}_{\text{2}}}\]

    C) sodium oxalate

    D) \[\text{C}{{\text{O}}_{\text{2}}}\]and caustic soda

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  • question_answer94) Reaction of ethyl formate with excess of \[\text{C}{{\text{H}}_{\text{3}}}\text{Mgl}\] followed by hydrolysis gives

    A) \[n-\]propyl alcohol

    B) isopropyl alcohol

    C) acetaldehyde

    D) acetone

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  • question_answer95) Hydrolysis ofphenyl isocyanide forms

    A) benzoicacid

    B) formic acid

    C) acetic acid

    D) none of these

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  • question_answer96) Styrene can be purified by

    A) simple distillation

    B) fractional distillation

    C) steam distillation

    D) vacuum distillation

    View Answer play_arrow
  • question_answer97) Which of the following is not reducing sugar?

    A) Glucose

    B) Fructose

    C) Lactose

    D) Sucrose

    View Answer play_arrow
  • question_answer98) The monomer of teflon is:

    A) \[CHF=C{{H}_{2}}\]

    B) \[C{{F}_{2}}=C{{F}_{2}}\]

    C) \[CHCl=CHCl\]

    D) \[CHF=CHCl\]

    View Answer play_arrow
  • question_answer99) The hybridisation state of carbon in fullerene is

    A) \[sp\]

    B) \[s{{p}^{2}}\]

    C) \[s{{p}^{3}}\]

    D) \[s{{p}^{3}}d\]

    View Answer play_arrow
  • question_answer100) A fruity smell is produced by the reaction of \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{OH}\,\]with

    A) \[C{{H}_{3}}COC{{H}_{3}}\]

    B) \[C{{H}_{3}}COOH\]

    C) \[PC{{l}_{5}}\]

    D) \[C{{H}_{3}}CHO\]

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  • question_answer101) Five kingdom classification was proposed by

    A) Linnaeus

    B) Aristotle

    C) Whittaker

    D) Copeland

    View Answer play_arrow
  • question_answer102) According to the Neo-Darwinian theory which of the following is responsible for the origin of new species?

    A) Mutations

    B) Useful variations

    C) Mutations together with natural selection

    D) Hybridization

    View Answer play_arrow
  • question_answer103) Enzymes found attached to inner membrane of mitochondria instead of matrix is/are

    A) succinic dehydrogenase

    B) cytochrome oxidase

    C) both [a] and [b]

    D) malic dehydrogenase

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  • question_answer104) Chlorosis is caused due to deficiency of

    A) Mg

    B) Ca

    C) B

    D) Mn

    View Answer play_arrow
  • question_answer105) Part of the plant which is cultured to obtain virus free clones is

    A) Leaf

    B) root tip

    C) shoot tip

    D) embryo

    View Answer play_arrow
  • question_answer106) The first stable compound of \[{{\text{C}}_{\text{3}}}\] plants during photosynthesis is

    A) PGA

    B) RuBP

    C) Oxaloacetate

    D) Pyruvic acid

    View Answer play_arrow
  • question_answer107) Double fertilization is fusion of

    A) two eggs

    B) two eggs and polar nuclei

    C) one male gamete with egg and other with synergid

    D) one male gamete with egg and other with secondary nucleus

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  • question_answer108) Inheritence of ABO blood group shows

    A) polyploidy

    B) incomplete dominance

    C) multiple allelism

    D) polygeny

    View Answer play_arrow
  • question_answer109) Photosynthetic enhancement with flashing light was first observed by

    A) Benson and Calvin

    B) Hill and Calvin

    C) Hatch and Slack

    D) Emerson and Arnold

    View Answer play_arrow
  • question_answer110) Gibberellin was first extracted from

    A) Gibberella fujikuroi

    B) Gelidium

    C) Gracelaria

    D) Aspergillus

    View Answer play_arrow
  • question_answer111) In E. coli. an operator gene combine with

    A) inducer gene to switch on structural gene action

    B) inducer gene to switch off structural gene action

    C) regulator protein (represser) to switch off structural gene action

    D) regulator protein to switch on gene action

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  • question_answer112) Exarch and polyarch xylem strands are found in

    A) monocot stem

    B) dicotstem

    C) monocot root

    D) dicot root

    View Answer play_arrow
  • question_answer113) The stage of Omithine cycle at which arginase enzyme is used

    A) Omithine\[\to \] citruUine

    B) arginine \[\to \]Omithine

    C) citrulline \[\to \] arginosuccinic acid

    D) Omithine \[\to \] urea

    View Answer play_arrow
  • question_answer114) Photosynthetic food material is transported in the form of

    A) glucose

    B) sucrose

    C) starch

    D) glycogen

    View Answer play_arrow
  • question_answer115) At retrogressive metamorphosis the uro chordate larva

    A) loss notochord

    B) loss tail

    C) experience reduction of nervous system to a visceral ganglion

    D) all of the above

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  • question_answer116) A species inhabiting different geographical area is known as

    A) Allopatric

    B) Sympatric

    C) Biospecies

    D) Sibling species

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  • question_answer117) Castor oil is yielded from which of the following?

    A) Brassica compestris

    B) Sesamum indicum

    C) Ricinus communis

    D) Cocos nucifera

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  • question_answer118) Which type of respiratory organs are present in spiders and scropions?

    A) Book lungs

    B) Gills

    C) Gill books

    D) Lungs

    View Answer play_arrow
  • question_answer119) Energy storage at consumer level is called

    A) gross primary productivity

    B) secondry productivity .

    C) net primary productivity

    D) net productivity

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  • question_answer120) After examining the blood groups of husband and wife, the doctor advised them not to have more than one child, the blood group of the couple are likely to be

    A) male \[R{{h}^{-}}\]and female \[R{{h}^{+}}\]

    B) female \[R{{h}^{-}}\]and male \[R{{h}^{+}}\]

    C) male \[R{{h}^{+}}\]and female\[R{{h}^{+}}\]

    D) male \[R{{h}^{-}}\]and female\[R{{h}^{-}}\]

    View Answer play_arrow
  • question_answer121) Main component of ribosome are

    A) DNA and RNA

    B) RNA and protein

    C) DNA and protein

    D) protein and lipids

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  • question_answer122) How many hearts are found in earthworm?

    A) 8 (four pairs)

    B) 2 (one pair)

    C) 6 (three pairs)

    D) 12 (six pairs)

    View Answer play_arrow
  • question_answer123) Schizocoelomates and entero coelomates are

    A) acoelomates

    B) true coelomates

    C) invertebrates

    D) echinoderms only

    View Answer play_arrow
  • question_answer124) \[\text{C}{{\text{O}}_{\text{2}}}\]is transported as

    A) dissolved in blood plasma

    B) as carbonic acid

    C) in carbammo haemoglobin

    D) as carbamino haemoglobin and carbonic acid

    View Answer play_arrow
  • question_answer125) Which of the damaged cells can not be repaired?

    A) Liver cells

    B) Brain cells

    C) Bone cells

    D) Epidermal cells

    View Answer play_arrow
  • question_answer126) Superficial meroblastic cleavage occurs in

    A) reptiles

    B) birds

    C) mammals

    D) insects

    View Answer play_arrow
  • question_answer127) One strand of DNA (non-template) has base sequence CAG, TCG GAT. What will be the sequence of bases in mRNA?

    A) AGC CTA CTA

    B) GTC AGC CTC

    C) CAG UCG GAU

    D) GAC TAG CTA

    View Answer play_arrow
  • question_answer128) Krebs cycle was discovered by Krebs in pigeon muscles in 1940. Which step is called gateway step/link reaction/transition reaction in respiration?

    A) Glycoiysis

    B) Formation of acetyl-coA

    C) citric acid formation

    D) ETS terminal oxidation

    View Answer play_arrow
  • question_answer129) When released from ovary, human egg contain

    A) one Y chromosome

    B) two X chromosome

    C) one X chromosome

    D) XY chromosome

    View Answer play_arrow
  • question_answer130) In the body, the membrane surrounding the bone is known as

    A) periosteum

    B) endosteum

    C) perichondrium

    D) chondrocytes

    View Answer play_arrow
  • question_answer131) Polygonum type of embryosac is

    A) 7-celled, 8-nucleate

    B) 8-celled, 7-nucleate

    C) 9-nucleate

    D) 16-nucleate

    View Answer play_arrow
  • question_answer132) Some organisms resemble other organisms and thus escape from enemies. This phenomenon is known as

    A) homology

    B) variation

    C) analogy

    D) mimicry

    View Answer play_arrow
  • question_answer133) Recent reports of acid rains in big industrial cities are due to the effect of atmospheric pollution by

    A) more relase of \[\text{N}{{\text{O}}_{\text{2}}}\] and \[\text{S}{{\text{O}}_{\text{2}}}\]by burning of fossil fuels

    B) more relase of \[\text{C}{{\text{O}}_{2}}\]by burning of coal/wood cutting of forests and increasing popultions

    C) excessive release of \[\text{N}{{\text{H}}_{\text{3}}}\]by coal gas/industries

    D) excessive release of CO by incomplete combustion of carbonaceous fuels

    View Answer play_arrow
  • question_answer134) There is more competition for survival between

    A) different animals of same niche

    B) same animals of same niche

    C) different animals of different niche

    D) same animals of different niche

    View Answer play_arrow
  • question_answer135) Which set includes pathogenic Arthropods?

    A) Tse-tse fly, mosquito, flea-plague

    B) Crab, \[Culex,\]spider

    C) Anopheles, \[Culex,\]cray fish

    D) Silver fish, house fly, sandfly

    View Answer play_arrow
  • question_answer136) Ozone layer is being destroyed by

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

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

    C) \[CFCs\]

    D) Photochemical smog

    View Answer play_arrow
  • question_answer137) In the blind spot where the optic nerves leaves the eyes

    A) rods and cones are absent

    B) only cones are present

    C) only rods are present

    D) special neurons are present

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  • question_answer138) Which of the following blood vessels in the circulatory system of frog has more oxygenated blood?

    A) Pulmocutaneous artery

    B) Pulmocutaneous vein

    C) Pulmonary artery

    D) Precaval veins

    View Answer play_arrow
  • question_answer139) The enzyme, which helps to cut one strand of DNA duplex to release tension of coiling of two strands is

    A) DNA ligase

    B) DNA pblymerase

    C) topo-isomerase

    D) swielases (helicase or unwindases)

    View Answer play_arrow
  • question_answer140) Blood vascular system in hemichordata is

    A) open

    B) reduced

    C) closed

    D) absent

    View Answer play_arrow
  • question_answer141) In eukaryotes basic structural unit made of histone and DNA is

    A) nucleosome

    B) nucleolus

    C) chromosome

    D) lysosome

    View Answer play_arrow
  • question_answer142) Anaemia is due to deficiency of

    A) Ca

    B) Fe

    C) Mg

    D) P

    View Answer play_arrow
  • question_answer143) Mechanical support, enzyme circulation, protein synthesis and detoxification of drugs are function of

    A) ER

    B) ribosomes

    C) dictyosomes

    D) chloroplast

    View Answer play_arrow
  • question_answer144) Characteristic of mammalian liver is

    A) Kupffers cells and leucocytes

    B) Leucocytes and canaliculae

    C) Glissons capsules and Kupffer cells

    D) Glissons capsules and leucocytes

    View Answer play_arrow
  • question_answer145) Which of the following required both during photosynthesis and respiration?

    A) Phytochrome

    B) Cytochrome

    C) Chlorophyll

    D) Glucose

    View Answer play_arrow
  • question_answer146) One-gene one enzyme hypothesis was proposed by

    A) Beadle and Tatum

    B) Jacob and Monod

    C) Lederberg

    D) Watson and Crick

    View Answer play_arrow
  • question_answer147) Phytohormone commonly called stress hormone is

    A) auxin

    B) abscisic acid

    C) gibberellin

    D) cytokinins

    View Answer play_arrow
  • question_answer148) Saccharomyces is commonly used in the production of

    A) ethyl alcohol

    B) curd

    C) citric acid

    D) acetic acid

    View Answer play_arrow
  • question_answer149) Food chain is a series of population which starts with producers. It is concerning with

    A) biotic components only

    B) energy flow and transfer of nutrients

    C) both [a] and [b]

    D) biotic and decomposers

    View Answer play_arrow
  • question_answer150) Myxoedema is a disorder of

    A) parathyroid gland

    B) adrenal gland

    C) pituitary gland

    D) thyroid gland

    View Answer play_arrow

   

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