# Solved papers for BCECE Medical BCECE Medical Solved Papers-2003

### done BCECE Medical Solved Papers-2003

• question_answer1) The height y and distance x along the horizontal plane of projectile on a certain planet (with no surrounding) are given by: $y=(8t-5{{t}^{2}})$ metre and $x=6\,t$ metre where r is in second. The velocity with which the projectile is projected is:

A) 8 m/s

B) 6 m/s

C) 10 m/s

D) data is not sufficient

• question_answer2) A body of mass a, moving with a velocity b collides with a body of mass c, at rest and sticks to it. They move together with a velocity given by:

A) $\frac{ac}{a+b}$

B) $\frac{ab}{a+c}$

C) $\frac{a+b}{ac}$

D) $\frac{b+c}{ab}$

• question_answer3) The refractive index of a material is given by the equation $n=\frac{A+B}{{{\lambda }^{2}}}$, where A and B are constants. The dimensional formula for B is:

A) $[{{M}^{0}}{{L}^{2}}{{T}^{-1}}]$

B) $[{{M}^{0}}{{L}^{-2}}{{T}^{0}}]$

C) $[{{M}^{0}}{{L}^{2}}{{T}^{-2}}]$

D) $[{{M}^{0}}{{L}^{0}}{{T}^{0}}]$

• question_answer4) A satellite is orbiting around the earth. By what percentage should we increase its velocity, so as to enable it escape away from the earth?

A) 41.4%

B) 50%

C) 82.8%

D) 100%

• question_answer5) At what temperature, the hydrogen molecule will escape from earths surface?

A) 101 K

B) 102 K

C) 103 K

D) 104 K

• question_answer6) If the earth is at one-fourth of its present. distance from the sun, the duration of the year will be :

A) half the present year

B) one-eighth the present year

C) one-fourth the present year

D) one-sixth the present year

• question_answer7) An observer moves towards a stationary source of sound with a velocity one-tenth the velocity of sound. The apparent increase in frequency is:

A) zero

B) 10%

C) 5%

D) 0.1%

• question_answer8) When two conductors of charges and potentials ${{C}_{1}},\,\,{{V}_{1}}$ and ${{C}_{2}},\,\,{{V}_{2}}$ respectively are joined, the common potential will be :

A) $\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{V}_{1}}+{{V}_{2}}}$

B) $\frac{{{C}_{1}}V_{1}^{2}+{{C}_{2}}V_{2}^{2}}{V_{1}^{2}+V_{2}^{2}}$

C) ${{C}_{1}}+{{C}_{2}}$

D) $\frac{{{C}_{1}}{{V}_{1}}+{{C}_{2}}{{V}_{2}}}{{{C}_{1}}+{{C}_{2}}}$

• question_answer9) A weightless thread can bear tension upto 3.7 kg-wt. A stone of mass 500 g is tied to it and revolved in a circular path of radius 4 m in a vertical plane. If $g=10\,\,m{{s}^{-2}}$, then the maximum angular velocity of the stone will be:

• question_answer10) The effective length of a magnet is 31.4 cm and its pole strength is 0.5 Am. If it is bent in the form of semicircle, what will be its magnetic moment then?

A) 0.12 $A{{m}^{2}}$

B) 0.1 $A{{m}^{2}}$

C) 0.05 $A{{m}^{2}}$

D) 0.01 $A{{m}^{2}}$

• question_answer11) Four molecules of a gas have speeds 1, 2, 3 and$4\,\,km{{s}^{-1}}$. The value of rms speed of the gas molecules is:

A) $\frac{1}{2}\sqrt{15}\,km{{s}^{-1}}$

B) $\frac{1}{2}\sqrt{10}\,km{{s}^{-1}}$

C) $2.5\,\,km{{s}^{-1}}$

D) $\sqrt{\frac{15}{2}}\,\,km{{s}^{-1}}$

• question_answer12) If there is change of angular momentum from to 5 J in 5 s, then the torque is :

A) $\frac{3\,J}{5}$

B) $\frac{4\,J}{5}$

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

D) none of these

• question_answer13) Two springs having force constants k each are arranged in parallel and in series. A mass M is attached to two arrangements separately. If time period in first case is ${{T}_{1}}$ and in second case is ${{T}_{2}}$, then ratio $\frac{{{T}_{1}}}{{{T}_{2}}}$ is :

A) 1.5

B) 3.2

C) 0.5

D) 2.1

• question_answer14) If the work done in blowing a bubble of volume V is W, then the work done in blowing a soap bubble of volume 2 V will be :

A) W

B) 2W

C) V21V

D) ${{4}^{1/3}}$ W

• question_answer15) An ideal monoatomic gas is taken round the cycle ABCDA as shown in figure. The work done during the cycle is:

A) PV

B) 2PV

C) $\frac{PV}{2}$

D) zero

• question_answer16) A proton of energy 2 MeV is moving in a circular path in a magnetic field. What should be the energy of a deuteron, so that it also describes circular path of radius equal to that of the proton?

A) 1 MeV

B) 2 MeV

C) 4 MeV

D) 0.5 MeV

• question_answer17) A gas at NTP is suddenly compressed to one-fourth of its original volume. If $\gamma$ is supposed to be 3/2, then the final pressure is :

A) 4 arm

B) $\frac{3}{2}$arm

C) 8 aim

D) $\frac{1}{4}$arm

• question_answer18) In a series combination $R=300\,\,\Omega$, L = 0.9 H, $C=2.0\,\,\mu F,\,\,\omega =1000$ rad/s, the impedance of the circuit is :

A) $1300\,\,\Omega$

B) $900\,\,\Omega$

C) $500\,\,\Omega$

D) $400\,\,\Omega$

• question_answer19) n identical spherical drops each of radius r are charged to same potential V. They combine to form a bigger drop. The potential of the big drop will be :

A) ${{n}^{1/3}}V$

B) ${{n}^{2/3}}V$

C) V

D) nV

• question_answer20) The wavelength of maximum energy, released during an atomic explosion was $2.9\times {{10}^{-10}}m$. Given that the Wiens constant is $2.93\times {{10}^{-10}}m$, the maximum temperature attained must be of the order of:

A) ${{10}^{-7}}K$

B) ${{10}^{7}}K$

C) ${{10}^{-3}}K$

D) $5.86\times {{10}^{-7}}K$

• question_answer21) The pressure and density of a diatomic gas $\left( \gamma =\frac{7}{5} \right)$ change adiabatically from (P, d) to (P, d). If $\frac{d}{d}=32$, then $\frac{p}{p}$ should be :

A) $\frac{1}{128}$

B) 32

C) 128

D) none of these

• question_answer22) A piece of wax weighs 18.03 g in air. A piece of metal is found to weigh 17.03 g in water. It is tied to the wax and both together weigh 15.23 g in water. Then, the specific gravity of wax is :

A) $\frac{18.03}{17.03}$

B) $\frac{17.03}{18.03}$

C) $\frac{18.03}{19.83}$

D) $\frac{15.03}{17.03}$

• question_answer23) If a mica sheet of thickness t and refractive index u is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :

A) $\frac{D}{d}\mu t$

B) $\frac{D}{d}(\mu -1)\,t$

C) $\frac{D}{d}(\mu +1)\,t$

D) $\frac{D}{d}({{\mu }^{2}}-1)\,t$

• question_answer24) A ray of light propagates from glass (refractive index $=\frac{3}{2}$) to water (refractive index $=\frac{4}{3}$). The value of the critical angle is :

A) ${{\sin }^{-1}}\left( \frac{1}{2} \right)$

B) ${{\sin }^{-1}}\left( \sqrt{\frac{9}{8}} \right)$

C) ${{\sin }^{-1}}\left( \frac{8}{9} \right)$

D) ${{\sin }^{-1}}\left( \frac{5}{7} \right)$

• question_answer25) A ray of light suffers minimum deviation when incident at ${{60}^{o}}$ prism of refractive index $\sqrt{2}$. The angle of incidence is :

A) ${{\sin }^{-1}}(0.8)$

B) ${{60}^{o}}$

C) ${{45}^{o}}$

D) ${{30}^{o}}$

• question_answer26) Each of the resistance in the network shown in figure is equal to R. Find the equivalent resistance between two terminals A and B.

A) R

B) SR

C) 2R

D) -JR

• question_answer27) A gas in an air tight container is heated from ${{25}^{o}}C$ to ${{90}^{o}}C$. The density of gas will:

A) increase slightly

B) remain the same

C) increase considerably

D) decrease slightly

• question_answer28) If 2% of the main current is to be passed through the galvanometer of resistance G, the resistance of the shunt required is :

A) $\frac{G}{49}$

B) $\frac{G}{50}$

C) 49 G

D) 50 G

• question_answer29) The current in self-inductance L = 40 mH is increased uniformly from 1 A to 11 A in 4 milliseconds. The induced emf produced in L during this process will be :

A) 100 V

B) 0.2V

C) 440V

D) 40V

• question_answer30) ${{H}^{+}},H{{e}^{2+}}$ and ${{O}^{2-}}$ all having the same kinetic energy pass through a region in which there is a uniform magnetic field perpendicular to their velocity. The masses of ${{H}^{+}},H{{e}^{2+}}$ and ${{O}^{2-}}$ are 1 amu, 4 amu and 16 amu, respectively. Then:

A) ${{H}^{+}}$ will be deflected most

B) ${{O}^{2-}}$will be deflected most

C) $H{{e}^{2+}}$ and ${{O}^{2-}}$ will be deflected most

D) all will be deflected most

• question_answer31) The current gain of a transistor in common emitter mode is 49. The change in collector current and emitter current corresponding to the change in base current by 5.0 $\mu A$ are :

A) $\Delta {{i}_{C}}=245\,\mu A,\,\Delta {{i}_{E}}=250\,\mu A$

B) $\Delta {{i}_{C}}=252\,\mu A,\,\Delta {{i}_{E}}=145\,\mu A$

C) $\Delta {{i}_{C}}=125\,\mu A,\,\Delta {{i}_{E}}=250\,\mu A$

D) $\Delta {{i}_{C}}=252\,\mu A,\,\Delta {{i}_{E}}=230\,\mu A$

• question_answer32) In hydrogen atom when an electron jumps from second to first orbit, the wavelength of line emitted is :

A) 0.563 $\overset{o}{\mathop{A}}\,$

B) 4861 $\overset{o}{\mathop{A}}\,$

C) 4102 $\overset{o}{\mathop{A}}\,$

D) 1213 $\overset{o}{\mathop{A}}\,$

• question_answer33) How does the magnetic susceptibility y, of a paramagnetic material change with absolute temperature T?

A) $\chi \propto T$

B) $\chi \propto {{T}^{-1}}$

C) $\chi =$constant

D) $\chi ={{e}^{T}}$

• question_answer34) Two identical heaters of 220 V, 1000 W are placed in parallel with each other across 220 V line, then the combined power is :

A) 1000 W

B) 2000 W

C) 500 W

D) 4000 W

• question_answer35) A bar of magnetic moment M is cut into two parts of equal length. The magnetic moment of either part is :

A) M

B) 2M

C) $\frac{M}{2}$

D) zero

• question_answer36) A rain drop of radius 0.3 mm has a terminal velocity of 1 m/s and the viscosity of 1 m/s and the viscosity of air is $18\times {{10}^{-5}}$ poise. The viscous force on the drop is :

A) $16.95\times {{10}^{-9}}N$

B) $1.695\times {{10}^{-9}}N$

C) $10.17\times {{10}^{-9}}N$

D) $101.74\times {{10}^{-9}}N$

• question_answer37) If magnetic material-moves from stronger to weaker parts of magnetic field, then it is known as :

A) anti-ferromagnetic

B) ferromagnetic

C) diamagnetic

D) paramagnetic

• question_answer38) A charge q is placed at the centre of line joining two equal charges Q. The system of three charges will be in equilibrium, if q is equal to:

A) $-\frac{Q}{2}$

B) $-\frac{Q}{4}$

C) $+\frac{Q}{4}$

D) $+\frac{Q}{2}$

• question_answer39) The temperature of cold, hot junction of a thermocouple are ${{0}^{o}}C$ and ${{T}^{o}}C$ respectively. The thermo-emf produced is $E=AT-\frac{1}{2}B{{T}^{2}}$. If A = 16, B = 0.08, the temperature of inversion will be:

A) ${{100}^{o}}C$

B) ${{300}^{o}}C$

C) ${{400}^{o}}C$

D) ${{500}^{o}}C$

• question_answer40) Two light springs of force constants ${{k}_{1}}$ and ${{k}_{2}}$and a block of mass m are in one line AB on a smooth horizontal table, such that one end of each spring is fixed to rigid support and other end is attached to block of mass m kg as shown in figure. The frequency of vibration is :

A) $n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}+{{k}_{2}}}{m}}$

B) $n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}\,{{k}_{2}}}{m}}$

C) $n=\frac{1}{2\pi }\sqrt{\frac{{{k}_{1}}-{{k}_{2}}}{m}}$

D) none of these

• question_answer41) Pressure inside two soap bubbles are 1.01 and 1.02 atm. Ratio between their volumes is :

A) 102 : 101

B) ${{(102)}^{3}}\text{:(}103{{)}^{3}}$

C) 8 : 1

D) 2 : 1

• question_answer42) Two dielectrics of dielectric constants ${{K}_{1}}$ and ${{K}_{2}}$ are filled in gap of parallel plate capacitor as shown in figure The capacitance of capacitor will be:

A) $\frac{{{\varepsilon }_{0}}A\,({{K}_{1}}+{{K}_{2}})}{2\,d}$

B) $\frac{{{\varepsilon }_{0}}A}{2\,d}\left( \frac{({{K}_{1}}+{{K}_{2}})}{{{K}_{1}}{{K}_{2}}} \right)$

C) $\frac{{{\varepsilon }_{0}}}{d}\left( \frac{({{K}_{1}}{{K}_{2}}}{{{K}_{1}}+{{K}_{2}})} \right)$

D) $\frac{{{\varepsilon }_{0}}A}{d}\left( \frac{({{K}_{1}}+{{K}_{2}})}{{{K}_{1}}{{K}_{2}}} \right)$

• question_answer43) For a series LCR circuit, the phase difference between current and voltage at the condition of resonance will be :

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

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

C) zero

D) nothing can be said

• question_answer44) A metallic rod of length $l$ is placed normal to the magnetic field B and revolved in a circular path about one of the ends with angular frequency co. The potential difference across the ends will be ;

A) $\frac{1}{2}{{B}^{2}}l\omega$

B) $\frac{1}{2}B\omega {{l}^{2}}$

C) $\frac{1}{8}B\omega {{l}^{3}}$

D) $B\omega {{l}^{2}}$

• question_answer45) A magnetic needle suspended in a vertical plane at ${{30}^{o}}$ from the magnetic meridian makes an angle ${{45}^{o}}$ with the horizontal. What will be the true angle of dip?

A) ${{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)$

B) ${{\tan }^{-1}}(\sqrt{3})$

C) ${{45}^{o}}$

D) ${{30}^{o}}$

• question_answer46) A force F is given by $F=at+b{{t}^{2}}$, where t is time. What are the dimensions of a and b respectively?

A) $[ML{{T}^{-1}}]$ and $[ML{{T}^{-4}}]$

B) $[ML{{T}^{-3}}]$ and $[ML{{T}^{-4}}]$

C) $[ML{{T}^{-4}}]$ and $[ML{{T}^{2}}]$

D) $[M{{L}^{2}}{{T}^{3}}]$ and $[M{{L}^{-1}}{{T}^{2}}]$

• question_answer47) In a triode valve, the plate resistance is $10000\,\,\Omega$ and the anode load resistance is$30000\,\,\Omega$. If the amplification factor is 36, then the voltage gain is :

A) 9

B) 27

C) 36

D) 108

• question_answer48) ${{g}_{e}}$ and ${{g}_{p}}$ denote the acceleration due to gravity on the surface of the earth and another planet whose mass and radius are twice to that of the earth, then :

A) ${{g}_{p}}=\frac{{{g}_{e}}}{2}$

B) ${{g}_{p}}={{g}_{e}}$

C) ${{g}_{p}}=2{{g}_{e}}$

D) ${{g}_{p}}=\frac{{{g}_{e}}}{\sqrt{2}}$

• question_answer49) Of the following which relation is true :

A) $\beta >\alpha$

B) $\alpha >\beta$

C) $\alpha \beta =1$

D) $\alpha =\beta$

• question_answer50) A soap bubble in vacuum has a radius 3 cm and another soap bubble in vacuum has radius 4 cm. If two bubbles coalesce under isothermal condition, then the radius of the new bubble will be :

A) 7 cm

B) 5 cm

C) 4.5 cm

D) 2.3 cm

• question_answer51) Out of Cu, Al Fe and Zn, metal which can displace all others from their salt solution is:

A) Al

B) Cu

C) Zn

D) Fe

• question_answer52) In which of the following reactions, hydrogen is acting as an oxidising agent?

A) With $Li$ to form $LiH$

B) With ${{I}_{2}}$ to give HI

C) With S to give ${{H}_{2}}S$

D) None of the above

• question_answer53) Our cells get energy by the conversion of:

A) ATP $\xrightarrow{{}}$ Adenine

B) ATP $\xrightarrow{{}}$ ADP

C) ADP $\xrightarrow{{}}$ AMP

D) CDP $\xrightarrow{{}}$ CTP

• question_answer54) The number of optically active isomers of tartaric acid are:

A) 1

B) 3

C) 4

D) 2

• question_answer55) The hardness of water is estimated by :

A) conductivity method

B) titrimetric method

C) EDTA method

D) distillation method

• question_answer56) $N{{a}_{2}}O,MgO,\,\,A{{l}_{2}}{{O}_{3}}$ and $Si{{O}_{2}}$ have heat of formation equal to -416, -602, -1676 and $-911\,\,kJ\,\,mo{{l}^{-1}}$ respectively. The most stable oxide is :

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

B) $MgO$

C) $A{{l}_{2}}{{O}_{3}}$

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

• question_answer57) A photon having a wavelength of $845\text{ }\overset{o}{\mathop{A}}\,$, causes the ionisation of N atom. What is the ionization energy of N?

A) 1.4 kJ

B) $1.4\times {{10}^{4}}\,kJ$

C) $1.4\times {{10}^{2}}\,kJ$

D) $1.4\times {{10}^{3}}\,kJ$

• question_answer58) The electronic theory of bonding was proposed by:

A) Pauling

B) Lewis

C) Bronsted

D) Mullikan

• question_answer59) An azeotropic mixture of two liquids has boiling point lower than either of them, when it:

A) shows a negative deviation from Raoults law

B) shows no deviation from Raoults law

C) shows positive deviation from Raoults law

D) is saturated

• question_answer60) Troutons rule gives the relation between:

A) ${{T}_{b}}$ and T,

B) ${{T}_{b}}$ and critical pressure

C) enthalpy of vaporisation and boiling point

D) normal boiling point and boiling point

• question_answer61) The product $X$ in the following reaction is:

A) $C{{H}_{2}}Br-CH=C{{H}_{2}}$

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

C) $C{{H}_{3}}CH=CHBr$

D) none of the above

• question_answer62) What are the products in the following reaction? ${{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\xrightarrow[cold]{HI}X+Y$

A) $C{{H}_{3}}COOH,\,\,C{{H}_{2}}=C{{H}_{2}}$

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

C) ${{C}_{2}}{{H}_{5}}OH,{{C}_{2}}{{H}_{5}}I$

D) None of the above

• question_answer63) Which of the following reagent can distinguish between butyne-1 and butyne-2?

A) Bromine water

B) Aqueous $NaOH$

C) Fehlings solution

D) Ammoniacal $AgN{{O}_{3}}$

• question_answer64) Which of the following will have maximum pH?

A) $\frac{M}{10}HCl$

B) $\frac{M}{100}HCl$

C) $\frac{M}{10}NaOH$

D) $\frac{M}{100}NaOH$

• question_answer65) What is $\Delta E$ for system that does 500 cal of work on surrounding and 300 cal of heat is absorbed by the system?

A) -200 cal

B) -300 cal

C) +200 cal

D) +300 cal

• question_answer66) The rate of a chemical reaction :

A) increase as the reaction proceeds

B) decrease as the reaction proceeds

C) may increase or decrease during reaction

D) remain constant as the reaction

• question_answer67) A carbonate ore is :

A) carnallite

B) limonite

C) siderite

D) horn silver

A) nuclear fuel

B) neutron absorber

C) a moderator

D) neutron liberator to start the chain

• question_answer69) Cement does not contain :

A) calcium

B) aluminium

C) sulphur

D) iron

• question_answer70) The simplest way, to check whether a system is a colloid, is by :

A) Tyndall effect

B) Brownian movement

C) Electrodialysis

D) finding out particle size

• question_answer71) What is Z in the following reaction?

A) Benzoic acid

B) Cyanobenzoic acid

C) Benzamide

D) Aniline

• question_answer72) The reaction, $RCOOH\xrightarrow{Na{{N}_{3}}/conc.\,\,{{H}_{2}}S{{O}_{4}}}$ $RN{{H}_{2}}+{{N}_{2}}+C{{O}_{2}}$ is known as :

A) Curtius reaction

B) Lossen reaction

C) Schmidt reaction

D) Hofmann reaction

• question_answer73) What is the product in the reaction? $C{{H}_{3}}MgBr\xrightarrow[(ii){{H}_{2}}O]{(i)C{{O}_{2}}}X$

A) Acetaldehyde

B) Acetic acid

C) Formic acid

D) Formaldehyde

• question_answer74) What is the value of ${{E}_{cell}}$? $Cr|C{{r}^{3+}}(0.1M)|\,\,|F{{e}^{2+}}\,(0.01M)|Fe$ Given, $E_{C{{r}^{3+}}/Cr}^{o}=-0.74\,V$and $E_{F{{e}^{2+}}/Fe}^{o}=-0.44\,V$

A) +0.29 41V

B) + 0.5212 V

C) + 0.1308V

D) -0.2606 V

• question_answer75) Elevation in boiling point was ${{0.52}^{o}}C$ when 6g of a compound was dissolved in 100 g of water. Molecular weight of X is (${{K}_{b}}$ of water is ${{5.2}^{o}}C$per 100 g of water):

A) 120

B) 60

C) 600

D) 180

• question_answer76) The solubility of $PbC{{l}_{2}}$ is :

A) $\sqrt{{{K}_{sp}}}$

B) ${{({{K}_{sp}})}^{1/3}}$

C) ${{({{K}_{sp}}/4)}^{1/3}}$

D) ${{(8{{K}_{sp}})}^{1/2}}$

• question_answer77) Equilibrium constant K , for the reaction, $2HI(g){{H}_{2}}(g)+{{I}_{2}}(g)$at room temperature is 2.85 and that at 698 K is $1.4\times {{10}^{-2}}$. This implies that the forward reaction is:

A) exothermic

B) endothermic

C) exergonic

D) unpredictable

A) 2,2-bipyridyl

B) DMG

C) Ethylenediamine

D) None of these

• question_answer79) The amount of substance that gives $3.7\times {{10}^{7}}$dps, is :

A) one becquerel

B) one curie

C) one millicurie

D) one Rutherford

• question_answer80) The reaction, $A{{g}^{2+}}(aq)+Ag(s)2A{{g}^{+}}(aq)$ is an example of:

A) reduction

B) oxidation

C) comproportionation

D) disproportionation

• question_answer81) DDT is obtained by the reaction of chlorobenzene with:

A) chloral

B) chloroform

C) dichloromethane

D) acetaldehyde

• question_answer82) Which of the following is false?

A) Glycerol has strong hydrogen bonding

B) Glycol is a poisonous alcohols

C) Waxes are esters of higher alcohols with higher acids

D) Alkyl halides have higher b.p. than corresponding alcohols

• question_answer83) Which of the following oxides is most acidic?

A) $A{{l}_{2}}{{O}_{3}}$

B) $Si{{O}_{3}}$

C) ${{P}_{2}}{{O}_{5}}$

D) $MgO$

• question_answer84) Glaubers salt is :

A) $N{{a}_{2}}C{{O}_{3}}\,.\,\,10{{H}_{2}}O$

B) $N{{a}_{2}}S{{O}_{4}}\,.\,\,10{{H}_{2}}O$

C) $MgS{{O}_{4}}\,.\,\,7{{H}_{2}}O$

D) $CaS{{O}_{4}}\,.\,\,5{{H}_{2}}O$

• question_answer85) Enthalpy change when 1g water is frozen at${{0}^{o}}C$ is : ($\Delta {{H}_{fus}}=1.435$ kcal $mo{{l}^{-1}}$)

A) 0.0797 kcal

B) -0.0797 kcal

C) 1.435 kcal

D) -1.435 kcal

• question_answer86) Which of the following statement is true?

A) Some complex metal oxides behave as superconductor

B) Zinc oxide can act as superconductor

C) An impurity of tetravalent germanium in trivalent gallium creates electron deficiency

D) A Frenkel defect is formed when an ion is displaced from its lattice site to an interstitial site

• question_answer87) The correct set of four quantum number for the valence electron of rubidium (Z = 37) is :

A) $n=5,\,l=0,\,\,m=0,\,\,s=+1/2$

B) $n=5,\,l=1,\,\,m=1,\,\,s=+1/2$

C) $n=5,\,l=1,\,\,m=1,\,\,s=+1/2$

D) $n=6,\,l=0,\,\,m=0,\,\,s=+1/2$

• question_answer88) $s{{p}^{3}}$-hybridisation is not found in :

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

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

C) $BC{{l}_{3}}$

D) $N{{H}_{3}}$

• question_answer89) Chalcopyrites is an ore of:

A) gallium

B) copper

C) calcium

D) magnesium

• question_answer90) Which of the following statement is correct?

A) Acidify increases with increase in carbon atoms in carboxylic acids

B) Solubility of carboxylic acids increases with increase in carbon atoms

C) foiling points of acids are higher than corresponding alcohols

D) None of the above

• question_answer91) Which temperature is most suitable for fermentation?

A) 273 K

B) 298 K

C) 350 K

D) 330 K

• question_answer92) In the reaction, $HCHO+N{{H}_{3}}\xrightarrow{{}}X,\,\,X$is :

A) meta-formaldehyde

B) para-formaldehyde

C) urotropine

D) none of the above

• question_answer93) Which of the following have highest melting points?

A) p -block elements

B) s-block elements

C) d-block elements

D) None of the above

• question_answer94) An acid has pH = 5 and its concentration is 1M. What is the value of ${{K}_{a}}$ for the acid?

A) ${{10}^{-7}}$

B) ${{10}^{-5}}$

C) ${{10}^{-10}}$

D) ${{10}^{-8}}$

• question_answer95) Fatty acid is to fat as glucose is to :

A) cellulose

B) glycogen

C) starch

D) all of these

• question_answer96) In aerosol, the dispersion medium is :

A) solid

B) liquid

C) gas

D) any of these

A) digestion of food

B) hydrolysis of protein

C) breaking and dispersion into colloidal state

D) precipitation of solid from colloidal state

• question_answer98) Buna-N is a polymer of:

C) isoprene and ethylene diamine

D) isoprene and butyl diamine

• question_answer99) Which of the following is an ingrain dye?

A) Congo-red

B) Aniline black

C) Alizarin

D) Indigo

• question_answer100) Which of the following give an explosive, RDX, on nitration?

A) Toluene

B) Benzene

C) Guanidine

D) Urotropine

• question_answer101) Hepatitis-B is also called :

A) epidemic jaundice

B) serum jaundice

C) catarrhal jaundice

D) none of the above

• question_answer102) In mammals, carbohydrates are stored as :

A) glycogen in liver and spleen

B) lactic acid in muscles

C) glucose in liver

D) glycogen in liver and muscles

A) monosaccharides

B) disaccharides

C) trisaccharides

D) polysaccharides

• question_answer104) During conversion of pyruvic acid into acetyl Co-A, pyruvic acid is :

A) oxidised

B) reduced

C) isomerised

D) condensed

• question_answer105) A cell coded protein formed in response to infection with most animal viruses is :

A) histone

B) antigen

C) antibody

D) interferon

• question_answer106) In Krebs cycle :

A) ADP is converted into ATP

B) pyruvic acid is converted into $C{{O}_{2}}$ and ${{H}_{2}}O$

C) glucose is converted into $C{{O}_{2}}$

D) pyruvic acid is converted into ATP

A) releases energy

B) requires energy

C) produces ATP

D) produces a toxic substance

• question_answer108) The first carbon-dioxide acceptor in ${{C}_{4}}$ plants is :

A) phosphoenol pyruvate

B) oxalo acetic acid

C) phosphoglyceric acid

D) ribulose 1, 5- diphosphate

• question_answer109) Fatty liver syndrome is due to excessive intake of:

A) morphine

B) alcohol

C) tobacco

D) both [b] and [c]

• question_answer110) The ${{C}_{4}}$ plants are different from the ?3 plants with reference to the :

A) types of pigments involved in photosynthesis

B) the number of NADPH that are consumed in preparing sugar

C) types of end product of photosynthesis

D) the substance that accepts $C{{O}_{2}}$ in carbon assimilation and first stable product

• question_answer111) Haversian canal is found in the bone of :

A) mammals

B) reptiles

C) aves

D) pices

A) 11 months

B) 15 months

C) 22 months

D) 32 months

• question_answer113) The banding pattern of chromosomes 3 and 6 of human beings and chimpanzee shows that they had :

A) common origin

B) different origin

C) same number of chromosomes

D) similar blood groups

A) bone-marrow

B) platelet

C) nervous tissue

D) lymphocyte

• question_answer115) Acid rain are produced by :

A) excess release of carbon-monoxide by incomplete combustion

B) excess formation of $C{{O}_{2}}$ by combustion and animal respiration

C) excess production of $N{{H}_{3}}$ by industry and coal gas

D) excess $N{{O}_{2}}$ and $S{{O}_{2}}$ from burning fossil fuels

• question_answer116) Spermatogenesis is influenced by :

A) Progesterone

B) FSH

C) STH

D) LTH

• question_answer117) DNA acts as a template for synthesis of:

A) RNA

B) DNA

C) both [a] and [b]

D) protein

• question_answer118) t-RNA attaches, amino acid at its :

A) 3end

B) 5end

C) anticodon

D) loop

• question_answer119) DPT provide immunity against:

A) diphtheria

B) whooping cough

C) tetanus

D) all of these

• question_answer120) External water is not required for fertilization of:

A) bryophytes

B) pteridophytes

C) thallophytes

D) spermatophytes

• question_answer121) In orthotropous ovule, the micropyle and chalaza are :

A) oblique to funiculus

B) parallel to funiculus

C) at right angle to funiculus

D) in straight line with funiculus

• question_answer122) In India AIDS was reported in :

A) 1932

B) 1986

C) 1990

D) 1992

• question_answer123) A colourblind person can not distinguish :

A) green and blue

B) red and green

C) yellow and white

D) black and yellow

• question_answer124) On which day, we celebrate malarial day?

A) 5th June

B) 15th August

C) 20th August

D) 1st December

• question_answer125) Proteinaceous nature of enzyme was suggested by:

A) Sumner

B) Kuhne

C) E. Buchner

D) Northrop

• question_answer126) Gambusia fish is :

A) cat fish

B) sucker fish

C) mosquito fish

D) flat fish

• question_answer127) Brain depends on blood for the supply of:

A) oxygen and glucose

B) oxygen and electrolytes

C) oxygen and ATP

D) ATP and glucose

• question_answer128) Plague is caused by :

A) Diplococcus pneumoniae

B) Yersinia pestis

C) Corynebacterium diptheriae

D) All of the above

• question_answer129) In Musa, inflorescence is:

A) capitulum

B) corymb

D) polychasial cyme

• question_answer130) Sexual phase of Plasmodium life cycle occur in:

A) man

B) mosquito

C) pig

D) goat

• question_answer131) PCR was developed by :

A) Karry Mullis (1983)

B) E. Southern (1980)

C) Francis Collins (1985)

D) James D. Watson (1953)

A) Eleusine coracana

B) Hordeum vulgare

C) Pennisetum typhoides

D) Triticum aestivum

• question_answer133) International Rice Research Institute (IRRI) is located at:

B) Manila (Philippines)

C) New York (USA)

D) Tokyo (Japan)

• question_answer134) Which hormone is responsible for ovulation?

A) FSH

B) LH

C) Testosterone

D) Oestrogen

• question_answer135) Centromere is also called :

A) chromomere

B) secondary constriction

C) primary constriction

D) chromocentre

A) Vaccine Creation Research Centre

B) Vector Control Research Centre

C) Venum Control Research Centre

D) Vital Chemical Release Centre

• question_answer137) An aquatic fern used as bio-fertilizer is :

A) Marsilea

B) Azolla

C) Pteridium

D) Salvinia

• question_answer138) Which of the following protozoan, attacks gums in man?

A) Entamoeba gingivalis

B) Trichomonas

C) Giardia

D) All of the above

• question_answer139) IPM (Integrated Pest Management) involves :

A) tissue culture

B) biological control

C) bio-fertilizers

D) confusion technique

• question_answer140) Philosophic Zoologique was written by :

A) Lamarck

B) de Vries

C) Mendel

D) Spencer

• question_answer141) Which of the following is correctly matched?

A) Anopheles-Malaria

B) House fly-Yellow fever

C) Body loose-Typhoid

D) Sandfly-Plague

• question_answer142) Incomplete breakdown of sugar in anaerobic respiration forms :

A) glucose and $C{{O}_{2}}$

B) alcohol and $C{{O}_{2}}$

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

D) fructose and water

• question_answer143) Life cycle of Plasmodium is :

A) monogenetic

B) digenetic

C) trigenetic

D) polygenetic

• question_answer144) A child with mother of A blood group and father of AB blood group, will not have the following blood group :

A) B

B) A

C) AB

D) 0

A) Fertilization outside and gestation inside womb of mother

B) Fertilization inside female genital tract and growth in test tube

C) Rearing of prematurely born baby in incubator

D) Both fertilization and -development are effected outside the female genital tract

• question_answer146) Most important component of oral contraceptive is :

A) LH

B) GH

C) thyroxine

D) progesterone

• question_answer147) Purpose of tubectomy is to prevent:

A) fertilization

B) coitus

C) egg formation

D) embryonic development

A) Java man

B) Neanderthal man

C) Cro-magnon man

D) Peking man

• question_answer149) Calvin cycle occurs in :

A) cytoplasm

B) chloroplasts

C) mitochondria

D) glyoxysomes

• question_answer150) Which of the following enzyme, is used to cut DNA strand at specific site?

A) DNA ligase

B) DNA polymerase

C) RNA polymerase

D) Restriction endonuclease