Solved papers for JCECE Medical JCECE Medical Solved Paper-2004

done JCECE Medical Solved Paper-2004

  • question_answer1) The direction of vector \[\overset{\to }{\mathop{\text{A}}}\,\] is reversed. What are the values \[\Delta \overset{\to }{\mathop{\text{A}}}\,\] and \[\Delta |\overset{\to }{\mathop{\text{A}}}\,|\] ?

    A)  \[+\,2\vec{A},0\]

    B) \[+\,\vec{A},0\]

    C)  \[-\,\vec{A},0\]

    D)  \[-2\,\vec{A},0\]

    View Answer play_arrow
  • question_answer2) The velocity of a body moving with uniform acceleration at a given instant of time t is 10 m/s. After 5 s its velocity is 20 m/s. Distance travelled in that time is:

    A) 300m

    B) 400m

    C) 150m

    D) 75m

    View Answer play_arrow
  • question_answer3) A stone falls freely such that the distance covered by It in the last second of its motion is equal to the distance covered by it in the first 5 s. It is in air for:

    A) 26s

    B) 25s

    C) 13s

    D) 12s

    View Answer play_arrow
  • question_answer4) A child is swinging a swing. Minimum and maximum heights of swing from earths surface are 0.75 m and 2m respectively. The maximum velocity of this swing is:

    A) 5 m/s

    B) 10 m/s

    C) 15 m/s

    D) 20 m/s

    View Answer play_arrow
  • question_answer5) An object is thrown along a direction making an angle \[{{45}^{o}}\] with the horizontal direction. The horizontal range of the object is equal to:

    A) twice the vertical height

    B) vertical height

    C) four times the vertical height

    D) three times the vertical height

    View Answer play_arrow
  • question_answer6) A fireman wants to slide down a rope. The breaking load for the rope is\[\frac{\text{3}}{\text{4}}\text{th}\] of the weight of the man. With what acceleration should the fireman slide down? (Acceleration due to gravity is g)

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

    B) \[\frac{g}{4}\]

    C) \[\frac{3g}{4}\]

    D) zero

    View Answer play_arrow
  • question_answer7) A body of mass 1 kg is rotating in a vertical circle of radius 1m. What will be (he difference in kinetic energy at the top and at the bottom of the circle? (Take\[g=10\,m/{{s}^{2}}\])

    A) 50 J

    B) 30 J

    C) 20 J

    D) 10 J

    View Answer play_arrow
  • question_answer8) A circular ring of mass m and radius r is rolling on a smooth horizontal surface with speed v. Its kinetic energy is:

    A) \[\frac{1}{8}m{{v}^{2}}\]

    B) \[\frac{1}{4}m{{v}^{2}}\]

    C) \[\frac{1}{3}m{{v}^{2}}\]

    D) \[m{{v}^{2}}\]

    View Answer play_arrow
  • question_answer9) A satellite is revolving around the earth in a circular orbit of radius 4 times that of the parking orbit. The time period of the .satellite

    A) 16 days

    B) 2 days

    C) 4 days

    D) 8 days

    View Answer play_arrow
  • question_answer10) As shown in figure, a planet revolves in elliptical orbit around the sun. Where is KE of the planet maximum?

    A) \[At\,{{P}_{4}}\]

    B) \[At\,{{P}_{1}}\]

    C) \[At\,{{P}_{2}}\]

    D) \[At\,{{P}_{3}}\]

    View Answer play_arrow
  • question_answer11) If the condenser shown in the circuit is charged to 5 V and left in the circuit, in 12 s the charge on the condenser will become:

    A) \[\frac{10}{e}\text{coulomb}\]

    B) \[\frac{{{e}^{2}}}{10}\text{coulomb}\]

    C) \[\frac{10}{{{e}^{2}}}\text{coulomb}\]

    D) \[\frac{e}{10}\text{coulomb}\]

    View Answer play_arrow
  • question_answer12) A sings with a frequency \[(n)\]and B sings with a frequency 1/8 that of A. If the energy remains the same and the amplitude of A is a, the amplitude of B will be:

    A) 2a

    B) 8 a

    C) 4a

    D) a

    View Answer play_arrow
  • question_answer13) Reactance of a capacitor of capacitance \[C\,\mu F\]for AC frequency \[\frac{\text{400}}{\text{ }\!\!\pi\!\!\text{ }}\text{Hz}\]is \[25\,\Omega ,\] the value of C is:

    A) \[75\,\mu F\]

    B) \[100\,\mu F\]

    C) \[25\,\mu F\]

    D) \[50\,\mu F\]

    View Answer play_arrow
  • question_answer14) An electron and a proton have same de-Broglie wavelength, then kinetic energy of the electron is:

    A) greater than KE of proton

    B) zero

    C) equal to KE of proton

    D) infinite

    View Answer play_arrow
  • question_answer15) Relative permeability of iron is 5500. Its magnetic susceptibility is:

    A) 5499

    B) \[5500\times {{10}^{7}}\]

    C) \[5500\times {{10}^{-7}}\]

    D) 5501

    View Answer play_arrow
  • question_answer16) A force of \[7\hat{i}+6\hat{k}\]makes a body to move on a plane with the velocity \[3\hat{i}+4\hat{k}.\] The power developed is:

    A) \[\sqrt{45}\]

    B) 45

    C) 24

    D) \[\sqrt{24}\]

    View Answer play_arrow
  • question_answer17) The variation of PV with V of a fixed mass of an ideal gas at constant temperature is graphically represented by as shown in figure:

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer18) The number of oxygen molecules in a cylinder of volume \[\text{1}{{\text{m}}^{\text{3}}}\]at a temperature of \[\text{27}{{\,}^{\text{o}}}\text{C}\]and pressure of 13.8 Pa is: (Boltzmanns constant\[k=1.38\times {{10}^{-23}}\,J{{K}^{-1}}\])

    A) \[6.23\times {{10}^{26}}\]

    B) \[0.33\times {{10}^{28}}\]

    C) \[3.3\times {{10}^{21}}\]

    D) none of these

    View Answer play_arrow
  • question_answer19) The minimum magnifying power of a telescope is M. If the focal length of the eye lens is halved, the magnifying power will become:

    A) \[\frac{M}{4}\]

    B) \[3M\]

    C) \[2M\]

    D) \[4M\]

    View Answer play_arrow
  • question_answer20) The surface temperature is maximum for:

    A) blue star

    B) yellow star

    C) green star

    D) red star

    View Answer play_arrow
  • question_answer21) A convergent doublet of separated lens, corrected for spherical aberration, are separated by 2 cm and has an equivalent focal length of 10 cm. The focal length of its component lenses are:

    A) \[{{f}_{1}}=18\,cm,\,{{f}_{2}}=10\,cm\]

    B) \[{{f}_{1}}=20\,cm,\,{{f}_{2}}=28\,cm\]

    C) \[{{f}_{1}}=20\,cm,\,{{f}_{2}}=18\,cm\]

    D) \[{{f}_{1}}=24\,cm,\,{{f}_{2}}=18\,cm\]

    View Answer play_arrow
  • question_answer22) In Youngs experiment using light of wavelength \[6000\overset{\text{o}}{\mathop{\text{A}}}\,,\] fringe width obtained at distance 2.5 m is 0.8 mm. If the entire apparatus is immersed in a liquid of refractive. index 1.6, the fringe width Will be:

    A) 0.2 mm

    B) 0.4 mm

    C) 0.5mm

    D) 0.6 mm

    View Answer play_arrow
  • question_answer23) In double slit experiment, the angular width of interference fringes with sodium light \[(\lambda =5890\,\overset{\text{o}}{\mathop{\text{A}}}\,)\]is \[\text{0}\text{.2}{{\text{0}}^{\text{o}}}\text{.}\] The change in wavelength required to increase the angular width by 10% will be:

    A) zero

    B) increased by \[6479\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) increased by \[589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) decreased by \[589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

    View Answer play_arrow
  • question_answer24) SHM is executed by a particle of mass \[m.\]The displacement of the particle is \[\left( \frac{1}{\sqrt{2}} \right)\]times the amplitude. What fraction of the total energy is kinetic at this displacement?

    A) \[\frac{\sqrt{3}}{2}\]

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

    C) \[\frac{3}{4}\]

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

    View Answer play_arrow
  • question_answer25) The period of SHM of a particle is 12 s. The phase difference between the positions at \[t=3\,s\]and \[t=4s\]will be:

    A) \[\pi /4\]

    B) \[3\pi /5\]

    C) \[\pi /6\]

    D) \[\pi /=2\]

    View Answer play_arrow
  • question_answer26) The volume of a metal sphere increases by \[\text{0}\text{.15 }\!\!%\!\!\text{ }\]when its temperature is raised by\[\text{24}{{\,}^{\text{o}}}\text{C}\text{.}\]The coefficient of linear expansion of metal is:

    A) \[2.5\times {{10}^{-5}}/{{\,}^{o}}C\]

    B) \[2.0\times {{10}^{-5}}/{{\,}^{o}}C\]

    C) \[1.5\times {{10}^{-5}}/{{\,}^{o}}C\,\]

    D) \[1.2\times {{10}^{-5}}/{{\,}^{o}}C\,\]

    View Answer play_arrow
  • question_answer27) The radii of two soap bubbles are \[{{r}_{1}}\]and\[{{r}_{2}}\]\[({{r}_{2}}>{{r}_{1}}).\]When they come into contact, the radius of their common interface is:

    A) \[{{r}_{2}}-{{r}_{1}}\]

    B) \[\sqrt{r_{1}^{2}-r_{2}^{2}}\]

    C) \[\frac{{{r}_{1}}+{{r}_{2}}}{2}\]

    D) \[\frac{{{r}_{1}}{{r}_{2}}}{{{r}_{1}}-{{r}_{2}}}\]

    View Answer play_arrow
  • question_answer28) A ray of light is incident on the surface of a glass slab at \[\text{6}{{\text{0}}^{\text{o}}}\text{.}\] The refractive index of glass, if the reflected and refracted rays are mutually perpendicular to each other, will be:

    A) 1.5

    B) 4.16

    C) 2.25

    D) 1.73

    View Answer play_arrow
  • question_answer29) A stretched string is 1 m long. Its mass per unit length is 0.5 g/m. It is stretched with a force of 20 N. It is plucked at a distance of 25 cm from one end. The frequency of note emitted by it will be:

    A) 400 m

    B) 300 Hz

    C) 200 Hz

    D) 100 Hz

    View Answer play_arrow
  • question_answer30) A transverse wave is given by \[y=A\,\sin 2\pi (ft-x/\lambda ).\]The maximum particle velocity is 4 times the wave velocity when:

    A) \[\lambda =2\,\pi A\]

    B) \[\lambda =\pi A\]

    C) \[\lambda =\pi A/2\]

    D) \[\lambda =\pi A/4\]

    View Answer play_arrow
  • question_answer31) The energy in eV of red light of wavelength \[\lambda =6560\overset{\text{o}}{\mathop{\text{A}}}\,\] is:

    A) 1.89 eV

    B) 2.89 eV

    C) 3.89 eV

    D) 4.89 Ev

    View Answer play_arrow
  • question_answer32) The wavelength of first member of Lyman series is \[1215\overset{\text{o}}{\mathop{\text{A}}}\,.\] The wavelength of \[{{\text{H}}_{\text{ }\!\!\alpha\!\!\text{ }}}\]line is:

    A) \[6561\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[5464\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[800\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[4840\overset{\text{o}}{\mathop{\text{A}}}\,\]

    View Answer play_arrow
  • question_answer33) When silver is irradiated by ultraviolet light of \[1000\overset{\text{o}}{\mathop{\text{A}}}\,,\]potential of 7.7 V is required to stop the photo electrons. The work function of silver will be:

    A) 3.72 eV

    B) 6.72 eV

    C) 5.72 eV

    D) 4.67eV

    View Answer play_arrow
  • question_answer34) Maximum kinetic energy\[{{E}_{k}}\]of a photoelectron varies with the frequency\[v\]of the incident radiation as:

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer35) A radioactive element has half-life period 1600 yr. After 6400 yr, what part of element will remain?

    A) \[\frac{1}{4}\]

    B) \[\frac{1}{8}\]

    C) \[\frac{1}{16}\]

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

    View Answer play_arrow
  • question_answer36) For a transistor\[{{I}_{E}}=25\,mA\] and \[{{I}_{B}}=1\,mA,\]the value of current gain \[\alpha \] will be:

    A) \[\frac{25}{24}\]

    B) \[\frac{24}{25}\]

    C) \[\frac{25}{26}\]

    D) \[\frac{26}{25}\]

    View Answer play_arrow
  • question_answer37) When two semiconductors of p and n type are brought into contact, they form a \[p-n\]junction which acts like a:

    A) rectifier

    B) amplifier

    C) oscillator

    D) conductor

    View Answer play_arrow
  • question_answer38) The de-Broglie wavelength of 1 kg mass moving with a velocity of 10 m/s, will be]:

    A) \[6.626\times {{10}^{-35}}m\]

    B) \[6.626\times {{10}^{-34}}m\]

    C) \[6.626\times {{10}^{-33}}m\]

    D) none of these

    View Answer play_arrow
  • question_answer39) Radioactive nuclei that are injected into a patient collected at certain sites within its body, undergoing radioactive decay and emitting electromagnetic radiation. These radiations can then be recorded by a detector. This procedure provides an important diagnostic tools called:

    A) gamma camera

    B) CAT scan

    C) radiotracer technique

    D) gamma ray spectroscopy

    View Answer play_arrow
  • question_answer40) If R, C and L denote resistance, capacitance and inductance. Which of the following will not have the dimensions of frequency?

    A) \[R{{L}^{-1}}\]

    B) \[{{R}^{-1}}{{C}^{-1}}\]

    C) \[{{L}^{-1/2}}{{C}^{-1/2}}\]

    D) \[RCL\]

    View Answer play_arrow
  • question_answer41) A \[10\,\mu F\]capacitor is connected across a 200 V, 50 Hz AC supply. The peak current through the circuit is:

    A) \[0.6\sqrt{2}A\]

    B) \[0.6\,A\]

    C) \[\frac{0.6\pi }{2}A\]

    D) \[\frac{0.6}{\sqrt{2}}A\]

    View Answer play_arrow
  • question_answer42) What is the energy stored in a 50 mH inductor carrying a current of 4A?

    A) 0.2 J

    B) 0.4 J

    C) 0.05 J

    D) 0.1 J

    View Answer play_arrow
  • question_answer43) In an ammeter, 4% of the main current is passing through galvanometer. If the galvanometer is shunted with a \[5\Omega \]resistance, the resistance of the galvanometer is:

    A) \[120\,\Omega \]

    B) \[20\,\Omega \]

    C) \[5\,\Omega \]

    D) \[4\,\Omega \]

    View Answer play_arrow
  • question_answer44) If 100 kWh of energy is consumed at 33 V in a copper voltameter, what is the mass of copper liberated? (Electrochemical equivalent of copper is\[0.33\times {{10}^{-6}}kg/C\])

    A) \[1\,mg\]

    B) \[3.6\,kg\]

    C) \[3.3\,kg\]

    D) \[1\,kg\]

    View Answer play_arrow
  • question_answer45) Four identical resistors when connected in series dissipate 5 W power. If they are connected in parallel, the power dissipated will be:

    A) 80 W

    B) 60 W

    C) 40 W

    D) 20 W

    View Answer play_arrow
  • question_answer46) What is the magnitude of the point charge due to which the electric field 30 cm away has the magnitude of 2N/C? \[\left( \frac{1}{4\pi {{\varepsilon }_{0}}}=9\times {{10}^{9}}N{{M}^{2}}/{{C}^{2}} \right)\]

    A) \[4\times {{10}^{-11}}C\]

    B) \[2\times {{10}^{-11}}C\]

    C) \[5.4\times {{10}^{-11}}C\]

    D) \[7.5\times {{10}^{-11}}C\]

    View Answer play_arrow
  • question_answer47) A parallel plate capacitor is immersed in an oil of dielectric constant 2. The field between the plates is:

    A) decreased, by a factor of\[\frac{1}{\sqrt{2}}\]

    B) increased, by a factor of \[\sqrt{2}\]

    C) increased, by a factor of\[\frac{1}{2}\]

    D) decreased, by a factor of 2

    View Answer play_arrow
  • question_answer48) A triode valve has an amplification factor of 20 and its plate is given a potential of 300 V. The grid-voltage to reduce the plate current to zero, is :

    A) 25V

    B) 15V

    C) 12V

    D) 10 V

    View Answer play_arrow
  • question_answer49) In an ideal parallel LC circuit, the capacitor is charged by connecting it to a DC source which is then disconnected. -The current in the circuit:

    A) becomes zero instantaneously

    B) grows monotonically,

    C) decays monotonically

    D) oscillates instantaneously

    View Answer play_arrow
  • question_answer50) For a satellite moving in an orbit around the earth, the ratio of kinetic to potential energy is:

    A) 1 : 2

    B) 2 : 1

    C) 1:1

    D) 4:1

    View Answer play_arrow
  • question_answer51) Which of the following Statements, about zero order reaction is not true?

    A) Its rate constant unit is \[{{s}^{-1}}\]

    B) The graph between time and rate of reaction is a straight line

    C) Rate of reaction is independent of concentration of reactants

    D) None of the above

    View Answer play_arrow
  • question_answer52) The amount of\[{{\text{H}}_{\text{2}}}\text{S}\text{.}\]required to precipitate \[\text{1}\text{.69 g BaS}\]from\[\text{BaC}{{\text{l}}_{\text{2}}}\]solution is:

    A) 3.4 g

    B) 0.034 g

    C) 0.34 g

    D) 0.17g

    View Answer play_arrow
  • question_answer53) Which of the following is not a protein?

    A) Testosterone

    B) Lipase

    C) Keratin

    D) Haemoglobin

    View Answer play_arrow
  • question_answer54) The reaction, \[C{{H}_{3}}COC{{H}_{3}}\xrightarrow[(ii)\,\text{KOH},\text{glcol}]{(i)\,N{{H}_{2}}N{{H}_{2}}}C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}\] is known as:

    A) Clemmensens reduction

    B) Blancs reduction

    C) Birch reduction

    D) Wolff-Kishner reduction

    View Answer play_arrow
  • question_answer55) pH-scale was proposed by:

    A) Arrhenius

    B) Sorenson

    C) Pierre de Coubertin

    D) none of the above

    View Answer play_arrow
  • question_answer56) Thomas slag is:

    A) \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.2{{H}_{2}}O\]

    B) \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.CaSi{{O}_{3}}\]

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

    D) \[CaSi{{O}_{3}}\]

    View Answer play_arrow
  • question_answer57) Mohrs salt is

    A) \[N{{a}_{2}}S{{O}_{4}}.A{{l}_{2}}(S{{O}_{4}}).24{{H}_{2}}O\]

    B) \[CuS{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]

    C) \[FeS{{O}_{4}}.{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.6{{H}_{2}}O\]

    D) \[{{K}_{2}}S{{O}_{4}}.F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer58) Which of the following has maximum ionisation energy?

    A) Caesium

    B) Fluorine

    C) Xenon

    D) Nitrogen

    View Answer play_arrow
  • question_answer59) Which of the following give ammonia, on heating with NaOH?

    A) Ethyl amine

    B) Ethane nitrile

    C) Nitroethane

    D) Ethanamide

    View Answer play_arrow
  • question_answer60) Which of the following is poisonous?

    A) Methanol

    B) Ethanol

    C) Glycerol

    D) Castor oil

    View Answer play_arrow
  • question_answer61) Which of the following fraction of coal tar distillation is obtained at \[{{270}^{o}}-{{360}^{o}}C\]?

    A) Light oil

    B) Middle oil

    C) Green oil

    D) Heavy oil

    View Answer play_arrow
  • question_answer62) The amount of oxalic acid, required to prepare 300 mL 2.5 M solution, is:

    A) 67.5 g

    B) 9.45 g

    C) 6.75 g

    D) 94.5 g

    View Answer play_arrow
  • question_answer63) The carbon di-oxide gas does not follow gaseous laws at all ranges of pressure and temperature because:

    A) it is triatpmic gas

    B) its internal energy is quite high

    C) there is attraction between its, molecules

    D) it solidify at low temperature

    View Answer play_arrow
  • question_answer64) The bond-angle in \[\text{As}{{\text{H}}_{\text{3}}}\]is greater than that in:

    A) \[N{{H}_{3}}\]

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

    C) \[BC{{l}_{3}}\]

    D) none of these

    View Answer play_arrow
  • question_answer65) Which of the following gas, diffuse most slowly?

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

    B) \[{{C}_{2}}{{H}_{4}}\]

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

    D) All of these diffuse at equal rate

    View Answer play_arrow
  • question_answer66) Oxidation number of fluorine is+1 in:

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

    B) \[N{{F}_{3}}\]

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer67) Which radioisotope is used in the treatment of Leukeamia?

    A) \[P-32\]

    B) \[Na-24\]

    C) \[1-128\]

    D) \[Co-59\]

    View Answer play_arrow
  • question_answer68) A metal having higher value of \[{{\text{E}}^{\text{o}}}\text{,}\]can:

    A) replace hydrogen from dilute \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

    B) replace hydrogen from concentrate \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

    C) act as oxidising agent

    D) all of the above

    View Answer play_arrow
  • question_answer69) The method, which is used to purify colloidal solution is:

    A) electrophoresis

    B) dialysis

    C) chromatography

    D) peptisation

    View Answer play_arrow
  • question_answer70) Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal \[\text{AgN}{{\text{O}}_{3}}\]solution. Which gas will come out of wolf bottle?

    A) Only ethyne

    B) Ethane and ethyne

    C) Ethane and ethene

    D) Ethane, ethene and propene

    View Answer play_arrow
  • question_answer71) How many conformers are known of ethane?

    A) Two

    B) Three

    C) \[>3\]

    D) Ethane cannot show conformation

    View Answer play_arrow
  • question_answer72) Interfering radicals interfere in the usual test of:

    A) acid radicals

    B) basic radicals

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer73) Flux in the smelting process is added to:

    A) decrease the solubility of impurities

    B) increase the fusion temperature of roasted ore

    C) convert impurities into slag

    D) all of the above

    View Answer play_arrow
  • question_answer74) The heat of formation of \[\text{MgO,A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]and \[\text{Si}{{\text{O}}_{2}}\]are \[-692,\,-1676,-911,\,\text{kJ}\text{mo}{{\text{l}}^{-1}}.\] Most stable oxide is:

    A) \[MgO\]

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

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

    D) cannot be predicted

    View Answer play_arrow
  • question_answer75) Which of the following reaction, will be favoured by low pressure?

    A) \[PC{{l}_{5}}PC{{l}_{3}}+C{{l}_{2}}\]

    B) \[{{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}\]

    C) \[{{H}_{2}}+\frac{1}{2}{{O}_{2}}{{H}_{2}}O\]

    D) \[2NO+{{O}_{2}}2N{{O}_{2}}\]

    View Answer play_arrow
  • question_answer76) In III group of basic radical analysis, \[N{{H}_{4}}Cl\]is added before group reagent \[N{{H}_{4}}OH.\]This is done to:

    A) increase the solubility product of III group salts

    B) decrease the solubility product of III group salts

    C) increase the ionic product of \[\text{O}{{\text{H}}^{-}}\]and III group radicals

    D) decrease the degree of ionisation of group reagent

    View Answer play_arrow
  • question_answer77) Representative elements are:

    A) \[s-\]block elements

    B) p-block elements

    C) both [a] and [b]

    D) none of these

    View Answer play_arrow
  • question_answer78) Which of the following equation is used in Paulings scale of electronegativity?

    A) \[{{x}_{A}}=0.187(IE+EA)+0.17\]

    B) \[{{x}_{A}}-{{x}_{B}}=0.182\]

    C) \[{{[{{E}_{A-B}}-\sqrt{({{E}_{A-A}}\times {{E}_{B-B}})}]}^{1/2}}\]

    D) None of the above

    View Answer play_arrow
  • question_answer79) Which hybridisation has sulphur in \[S{{O}_{2}}\]?

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

    B) \[s{{p}^{3}}{{d}^{2}}\]

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

    D) \[sp\]

    View Answer play_arrow
  • question_answer80) The energy of last electron of Li will be:

    A) \[-30.6\text{ }eV\]

    B) \[~-13.6\text{ }eV\]

    C) \[-24.6\text{ }eV\]

    D) \[~-28.6\text{ }eV\]

    View Answer play_arrow
  • question_answer81) Benzaldehyde, in presence of dil. NaOH, changes into benzyl alcohol and sodium benzoate. This reaction is an example of:

    A) rearrangement

    B) oxidation

    C) disproportionation

    D) none of the above

    View Answer play_arrow
  • question_answer82) Which of the following is the strongest acid?

    A) o-nitro benzoic acid

    B) \[m-\]nitro benzoic acid

    C) \[m-\] chloro benzoic acid

    D) \[m-\] cyano benzoic acid

    View Answer play_arrow
  • question_answer83) What is the product X in the reaction, \[C{{H}_{3}}COCl\xrightarrow{C{{H}_{3}}COONa}X?\]

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

    B) \[{{(C{{H}_{3}}CO)}_{2}}O\]

    C) \[C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]

    D) \[C{{H}_{3}}COC{{H}_{2}}COOH\]

    View Answer play_arrow
  • question_answer84) A 0.5 g/L solution of glucose is found to be isotonic with a 2.5 g/L solution of an organic compound. What will be the molecular weight of that organic compound?

    A) 300

    B) 600

    C) 925

    D) 1200

    View Answer play_arrow
  • question_answer85) Which of the following ion does not follow EAN rule?

    A) \[{{[Fe{{(CN)}_{6}}]}^{4-}}\]

    B) \[{{[Ag{{(CN)}_{2}}]}^{-}}\]

    C) \[{{[PtC{{l}_{6}}]}^{2-}}\]

    D) None of these

    View Answer play_arrow
  • question_answer86) Potassium, on burning in oxygen atmosphere, gives:

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

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

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

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

    View Answer play_arrow
  • question_answer87) Which method is employed to prepare copper sol?

    A) Peptisation

    B) Bredigs arc method

    C) Double decomposition

    D) Reduction of \[\text{CuC}{{\text{l}}_{\text{2}}}\]

    View Answer play_arrow
  • question_answer88) How much copper will be deposited at cathode, on passing 4 coulomb charge in 15 min?

    A) 0.0195 g

    B) 0.0013 g

    C) 0.020 g

    D) 0.0020 g

    View Answer play_arrow
  • question_answer89) If 50 % of a radioactive substance dissociates in 15 min, then the time taken by substance to dissociate 99% will be:

    A) 50 min

    B) 100 min

    C) 99 min

    D) 150 min

    View Answer play_arrow
  • question_answer90) Which of the following alcohol give positive iodoform test?

    A) Methanol

    B) Ethyl carbinol

    C) Pentanol-3

    D) Methyl carbinol

    View Answer play_arrow
  • question_answer91) Human body is an example of:

    A) open system

    B) closed system

    C) isolated system

    D) none of these

    View Answer play_arrow
  • question_answer92) The atomic size of cerium and promethium is quite close, due to:

    A) they are in same period in periodic table

    B) their electronic configuration is same

    C) \[f-\] electrons have poor shielding effect

    D) nuclear charge is higher oil cerium than promethium

    View Answer play_arrow
  • question_answer93) Brown glass and cement have/ which element common in them?

    A) \[Fe\]

    B) \[Al\]

    C) \[Na\]

    D) All of these

    View Answer play_arrow
  • question_answer94) The most common isomerism found in ethers, is:

    A) chain isomerism

    B) tautomerism

    C) metamerism

    D) optical isomerism

    View Answer play_arrow
  • question_answer95) \[t-\]butyl chloride preferrably undergo hydrolysis by:

    A) \[{{S}_{N}}1\] mechanism

    B) \[{{S}_{N}}2\] mechanism

    C) any of [a] and [b]

    D) none of the above

    View Answer play_arrow
  • question_answer96) Which of the following has lowest boiling point?

    A) \[NaCl\]

    B) \[CuCl\]

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

    D) \[CsCl\]

    View Answer play_arrow
  • question_answer97) Which of the following is true for the reaction \[CO(g)+\frac{1}{2}{{O}_{2}}(g)C{{O}_{2}}(g)\]

    A) \[{{K}_{p}}>{{k}_{c}}\]

    B) \[{{K}_{p}}<{{k}_{c}}\]

    C) \[{{K}_{p}}={{k}_{c}}\]

    D) \[{{K}_{p}}\ge {{k}_{c}}\]

    View Answer play_arrow
  • question_answer98) Which of the following is not a buffer solution?

    A) \[C{{H}_{3}}COOH+C{{H}_{3}}COONa\]

    B) \[{{H}_{3}}B{{O}_{3}}+N{{a}_{3}}B{{O}_{3}}\]

    C) \[HCl{{O}_{4}}+NaCl{{O}_{4}}\]

    D) \[N{{H}_{4}}OH+{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]

    View Answer play_arrow
  • question_answer99) Which of the following ore is concentrated by both, magnetic and gravimetric separation?

    A) Dolomite

    B) Tinstone

    C) Galena

    D) Bauxite

    View Answer play_arrow
  • question_answer100) Which of the following is not a polymer?

    A) RNA

    B) Oxytocin

    C) Cholesterol

    D) Amylose

    View Answer play_arrow
  • question_answer101) The first codon discovered by Nirenberg and Mathaei was:

    A) CCC

    B) GGG

    C) UUU

    D) AAA

    View Answer play_arrow
  • question_answer102) Maximum amount of energy/ATP is liberated on oxidation of:

    A) fats

    B) proteins

    C) starch

    D) vitamins

    View Answer play_arrow
  • question_answer103) The thermoregulatory centre in the body is:

    A) spinal cord

    B) hypothalamus

    C) cerebellum

    D) pituitary

    View Answer play_arrow
  • question_answer104) Which is not cancer?

    A) Leukemia

    B) Trachoma

    C) Carcinoma

    D) Sarcoma

    View Answer play_arrow
  • question_answer105) Bio gas production from waste bio mass with the help of methanogenic bacteria is:

    A) multi step process

    B) one step process

    C) two step process

    D) three step process

    View Answer play_arrow
  • question_answer106) Pace-maker in heart is situated:

    A) in the wall of left atrium

    B) in the wall of right atrium

    C) on inter-auricular septum

    D) on inter-ventricular septum

    View Answer play_arrow
  • question_answer107) In the animal body blood bank is:

    A) heart

    B) spleen

    C) lungs

    D) liver

    View Answer play_arrow
  • question_answer108) Addisons disease results from:

    A) hypertrophy of gonads

    B) hypo-secretion of adrenal cortex

    C) hyperactivity of cells of Leydig

    D) none of the above

    View Answer play_arrow
  • question_answer109) LSD is obtained from:

    A) Claviceps purpurea

    B) Rauwolffia serpentina

    C) Pdpayer somniferum

    D) Cannabis sativa

    View Answer play_arrow
  • question_answer110) Australopithecus existed in:

    A) Pliocene

    B) Miocene

    C) Pleistocene

    D) Both [a] and [b]

    View Answer play_arrow
  • question_answer111) who proved that oxygen evolved in photosynthesis comes from water?

    A) Calvin

    B) Mayer

    C) Blackman

    D) Ruben, Hassid and Kamen

    View Answer play_arrow
  • question_answer112) The process in which water is split during photosynthesis is:

    A) plasmolysis

    B) photolysis

    C) hydrolysis

    D) haemolysis

    View Answer play_arrow
  • question_answer113) Heroin is obtained from plant of family:

    A) Papaveraceae

    B) Leguminosae

    C) Cruciferae

    D) Liliaceae

    View Answer play_arrow
  • question_answer114) HIV has a protein coat and a genetic material which is:

    A) ss-RNA

    B) ds-RNA

    C) ds-DNA

    D) ss-DNA

    View Answer play_arrow
  • question_answer115) More\[\text{C}{{\text{O}}_{\text{2}}}\]is evolved than the volume of oxygen consumed. when the respiratory substrate is:

    A) fat

    B) sucrose

    C) glucose

    D) organic acid

    View Answer play_arrow
  • question_answer116) Immunoglobin found abundantly in serum is:

    A) IgM

    B) IgA

    C) IgN

    D) IgG

    View Answer play_arrow
  • question_answer117) During the process of blood coagulation vitamin-K helps in the:

    A) formation of thromboplastin

    B) formation of prothrombin

    C) conversion of prothrombin to thrombin

    D) conversion of fibrinogen to fibrin

    View Answer play_arrow
  • question_answer118) Krebs cycle begins with the reaction:

    A) citric acid+ acetyl Co-A

    B) oxaloacetic acid + pyruvic acid

    C) oxaloacetic acid + Citric acid

    D) oxaloacetic + acetyl Co-A

    View Answer play_arrow
  • question_answer119) Contraction of gall bladder is carried by:

    A) rennin

    B) gastrin

    C) cholecystokinin

    D) none of the above

    View Answer play_arrow
  • question_answer120) Foetal sex is determined by examining cells from amniotic fluid looking for:

    A) chiasmata

    B) Ban-bodies

    C) sex-chromosomes

    D) drumsticks

    View Answer play_arrow
  • question_answer121) Theory of inheritance of acquired characters was given by:

    A) Darwin

    B) Wallace

    C) Lamarck

    D) de Vries

    View Answer play_arrow
  • question_answer122) Removal of anthers of, some flowers during plant breeding is:

    A) emasculation

    B) anthesis

    C) pollination

    D) for collection of pollen

    View Answer play_arrow
  • question_answer123) Transgenic crops are modified through genetic engineering to develop natural resistance to insect pests. Which one is a transgenic plant?

    A) Tobacco and cotton

    B) Tomato and rice

    C) Maize and sugarcane

    D) Tomato and wheat

    View Answer play_arrow
  • question_answer124) Neo-Darwinism believes that new species develops through:

    A) mutations

    B) hybridization

    C) mutations with natural selection

    D) continuous variations with natural selection

    View Answer play_arrow
  • question_answer125) Most hazardous metal pollutant of automobile exhaust is:

    A) cadmium

    B) lead

    C) mercury

    D) copper

    View Answer play_arrow
  • question_answer126) VAM is useful for:

    A) phosphate nutrition

    B) breaking of dormancy

    C) decrease in diseases

    D) retarding flowering

    View Answer play_arrow
  • question_answer127) Parathyroid hormone is a:

    A) peptide

    B) carbohydrate

    C) lipid

    D) steroid

    View Answer play_arrow
  • question_answer128) A clone is:

    A) heterozygote. obtained asexually

    B) homozygote obtained asexually

    C) heterozygote produced by sexual methods

    D) homozygote produced by sexual reproduction

    View Answer play_arrow
  • question_answer129) A petroleum plant is:

    A) Euphorbia lathyrus

    B) Acaciaarabica

    C) Pinus roxburghii

    D) Prosopis cineraria

    View Answer play_arrow
  • question_answer130) Progesterone hormone is secreted by:

    A) corpus albicans

    B) corpus callosum

    C) corpus luteum in ovaries

    D) corpus uteri

    View Answer play_arrow
  • question_answer131) Triploid endosperm occurs only in:

    A) angiosperms

    B) gymnosperms

    C) pteridophytes

    D) spermatophytes

    View Answer play_arrow
  • question_answer132) Cinchona offlcinalis belongs to family:

    A) Cruciferae,

    B) Malvaceae

    C) Rubiaceae

    D) Leguminosae

    View Answer play_arrow
  • question_answer133) Meiosis in AaBb will produce gametes:

    A) AB, aB, Ab, ab

    B) AB, ab

    C) Aa, bb

    D) Aa, Bb

    View Answer play_arrow
  • question_answer134) Respiratory centre in brain occurs in:

    A) medulla oblongata

    B) cerebellum

    C) hypothalamus

    D) pericardium

    View Answer play_arrow
  • question_answer135) Capitulum inflorescence is found in:

    A) Liliaceae

    B) Papilionaceae

    C) Compositae

    D) Rosaceae

    View Answer play_arrow
  • question_answer136) Mutations are generally induced by means of:

    A) \[\alpha -rays\]

    B) \[\beta -rays\]

    C) \[\gamma -rays\]

    D) UV radiations

    View Answer play_arrow
  • question_answer137) Pollen grains are shed at:

    A) 1-celled stage

    B) 2-3- celled stage

    C) 4- celled stage

    D) 5- celled stage

    View Answer play_arrow
  • question_answer138) Turners syndrome is caused by:

    A) polyploidy

    B) autosomal aneuploidy

    C) sex-chromosome aneuploidy

    D) trisomy

    View Answer play_arrow
  • question_answer139) Phrase Survival of the Fittest was used by:

    A) Hugo de Vries

    B) Charles Darwin

    C) Herbert Spencer

    D) Jean Baptiste Lamarck

    View Answer play_arrow
  • question_answer140) Entry of pollen tube through micropyle is:

    A) porogamy

    B) mesogamy

    C) pseudogamy

    D) chalazogamy

    View Answer play_arrow
  • question_answer141) Micropyle helps in:

    A) germination of pollen grain

    B) growth of pollen tube

    C) coming out of pollen tube from pollen grain

    D) allowing entry of pollen tube

    View Answer play_arrow
  • question_answer142) In mature RBC, nucleus is present in:

    A) frog

    B) rabbit

    C) both [a] and [b]

    D) neither in frog noir in rabbit

    View Answer play_arrow
  • question_answer143) Microbial insecticide is:

    A) Bacillus polymixa

    B) Bacillus brevis

    C) Bacillus subtilis

    D) Bacillus thuringiensis

    View Answer play_arrow
  • question_answer144) Gas released during Bhopal tragedy was:

    A) sodium isothiocyanate

    B) methyl isocyanate

    C) potassium isothiocyanate

    D) ethyl isothiocyanate

    View Answer play_arrow
  • question_answer145) banana, which of the following part is edible?

    A) Epicarp

    B) Mesocarp

    C) Endocarp

    D) Both [b] and [c]

    View Answer play_arrow
  • question_answer146) In pond ecosystem, diatoms represent:

    A) producers

    B) primary consumers

    C) secondary consumers

    D) tertiary consumers

    View Answer play_arrow
  • question_answer147) Sorosis is found in:

    A) jack fruit

    B) mulberry

    C) fig

    D) both [a] and [b]

    View Answer play_arrow
  • question_answer148) Sertoli cells are involved in:

    A) respiration

    B) nutrition of sperms

    C) excretion

    D) development of sex organs

    View Answer play_arrow
  • question_answer149) The myocardium is found in :

    A) heart of mammals

    B) brain of mammals

    C) lungs of mammals

    D) testes of mammals

    View Answer play_arrow
  • question_answer150) Plasmid is:

    A) plastid

    B) algae

    C) fungus

    D) extra nuclear DNA of bacterial cell

    View Answer play_arrow

   

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

Free
Videos