JIPMER Full Mock Test - 1


200 Questions MCQ Test JIPMER 2020: Subject wise and Full Length Mock Tests | JIPMER Full Mock Test - 1


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This mock test of JIPMER Full Mock Test - 1 for NEET helps you for every NEET entrance exam. This contains 200 Multiple Choice Questions for NEET JIPMER Full Mock Test - 1 (mcq) to study with solutions a complete question bank. The solved questions answers in this JIPMER Full Mock Test - 1 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this JIPMER Full Mock Test - 1 exercise for a better result in the exam. You can find other JIPMER Full Mock Test - 1 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120V. Then the r.m.s. value of voltage is

Solution:

QUESTION: 2

The X - ray wavelength of L α line of platinum (Z - 78) is 1.30 Å . The X-ray wave length of L α line of molybdenum (Z = 42)

Solution:

QUESTION: 3

In a circuit two or more cells of the same e.m.f. are connected in parallel in order to

Solution:
QUESTION: 4

The equivalent capacitance between a and b for the combination of capacitors shown in figure where all capacitances are in microfarad is

Solution:
QUESTION: 5

A particle slides from rest from the top to down the outside smooth surface of a fixed sphere of radius r. It leaves the surface when the radius to the particle makes with the vertical an angle equal to—

Solution:

Let the velocity be v when the body leaves the surface. From the freebody diagram,

QUESTION: 6

When a wire is stretched and its radius becomes r/2, then its resistance will be

Solution:

In strectching condition Resistance is inversely proportional to r4 since R is inversely proportional to A2 and area is directly proportional to r2(in sterching condition) so the ans should be A option which is 16 R

QUESTION: 7

A step- up transformer is used on a 120 V line to provide a potential difference of 2400 V. If the primary coil has 75 turns, the number of turns in the secondary coil is

Solution:
QUESTION: 8

A solenoid of length 20 cm area of cross-section 4 cm2 and having 4000 turns is placed inside another solenoid of 2000 turns having a cross-section area 8 cm2 and length 10 cm. The mutual inductance of the system is

Solution:

QUESTION: 9

If ∈₀ and μ₀ represent the permittivity and permeability of vacuum and ∈ and μ represent the permittivity and permeability of medium, then refractive index of the medium is given by

Solution:

QUESTION: 10

Electric field and potential inside hollow charged conducting sphere are respectively where 'q' and 'r' are the charge and radius of given sphere.

Solution:
QUESTION: 11

If temperature of the sun were to increase from T to 2T and its radius from R to 2R, then how many times the radiant energy will be received on the earth?

Solution:

From Stefan's law, the energy radiated by the sun is given by P=σeAT4,

Assuming e=1 for the sun.

In 1 st case, P1=σe × 4πR× T4

In 2nd case, P= σe × 4π(2R)× (2T)4

= σe × 4πR× T× 64 = 64P1

The rate at which energy received at the earth is,

where, A= area of the earth, 

RSE = distance between the sun and the earth.

So, 

QUESTION: 12

An electric dipole has the magnitude of its charge as q, and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, then force acting on it and its potential energy are respectively

Solution:


QUESTION: 13

A body of mass m is taken to the bottom of a deep mine. Then

Solution:

Because acceleration due to gravity decreases

QUESTION: 14

When a satellite going round the eath in a circular orbit of radius r and speed V, loses some of its energy, then r and V change as

Solution:

The total energy of a satellite in an orbit is giv... moreen by E=GMm/2R in magnitude. So when energy is lost R will decrease as it is obvious from the eqn. Moreover the kinetic energy of the satellite is given by K=GMm/2R. So when R decreases. the kinetic energy must increase and so does the velocity.The other way to look into the problem is that. when satellite is going round the planet. It's angular momentum i.e mvr must be constant about the centre of the orbit. so keep the same to a constant value. v must increase in order to compensate with the decrease in R.

QUESTION: 15

300 Joule of work is done in sliding a 2 kg. block on an inclined plane to a height of 10 meters. Taking value of acceleration due to gravity 'g' to be 10 m/s2, work done against friction is

Solution:

Work done in lifting 2 kg mass upto height 10 metres is given by
W = mgh
= 2 x 10 x 10 = 200 J
Work done against friction
= 300 - 200 = 100 joule

QUESTION: 16

In two separate setups of the Young's double slit experiment, fringe of equal width are observed when lights of wavelengths in the ratio 1:2 are used. If the ratio of the slit separation in two cases is 2:1, the ratio of distances, between the plane of slits and the screen, in the two setups is

Solution:

QUESTION: 17

Consider a 1 cc sample of air absolute temperature T₀ at sea level and another 1 cc sample of air at a height where the pressure is one-third atmosphere. The absolute temperature T of the sample at that height is

Solution:
QUESTION: 18

Cyclotron is used to accelerate

Solution:

Cyclotron accelerates heavy positively charged particles which are used in nuclear experiments.

The centripetal force that is provided to the charged particle to move inside the cyclotron is due to varying electric field. The applied voltage around the Dee’s of cyclotron is too high, which forces the charged particles like alpha particle or protons etc. to be accelerated at very high speed.

QUESTION: 19

An electrical meter of internal resistance 20 Ω gives a full scale deflection when one milliampere current flows through it. The maximum current, that can be measured by using three resistors of resistance 12 Ω each, in milliamperes is

Solution:

QUESTION: 20

Magnetic meridian is a

Solution:

The magnetic meridian is an equivalent imaginary line connecting the magnetic south and north poles and can be taken as the horizontal component of magnetic force lines along the surface of the earth. Therefore, a compass needle will be parallel to the magnetic meridian.

QUESTION: 21

Which of the following particles will describe the smallest circle when projected with the same velocity perpendicular to the magnetic field ?

Solution:

The radius of the path taken by a charged particle in amagnetic field is given by  

The mass by charge ratio is least for electron , thus it will have least radius.

QUESTION: 22

If a bar magnet of moment μ is suspended in a uniform magnetic field B and it is given an angular deflection ' θ ' w.r.t its equilibrium position, the restoring torque on magnet is

Solution:
QUESTION: 23

Work done in turning a magnet of magnetic moment M by an angle of 90º from the magnetic meridian is n times the corresponding work done to turn through an angle of 60º, where n is

Solution:

W1 = MB (cos 0º - cos 90º) = MB (1 - 0) = MB
W2 = MB (cos 0º - cos 60º) = MB (1 - 1/2 ) = MB/2
∴ W1 = 2W2
⇒ n = 2

QUESTION: 24

A piece of steel floates in mercury. The specific gravities of mercury and steel are 13.6 and 7.8 respectively. For covering the whole piece, some water is poured over the mercury. What part of the steel piece will be inside the mercury?

Solution:

Suppose volume of steel piece is V and
nV is volume of mercury.
nV x 13.6 + (V - nV ) x 1 = V x 7.8
n = 0.54

QUESTION: 25

The moment of inertia of a body does not depend upon

Solution:
QUESTION: 26

According to the Hooke's law, if stress is increased, then ratio of stress to strain

Solution:

Hence, if stress is increased, then the ratio of stress to strain remains constant.

QUESTION: 27

A U-tube contains water and methylated spirit seperated by mercury. The mercury columns in the two arms are in level with 18 cm of water in one arm and 20 cm spirit in the other arm. The density of spirit is (Density of water=1 g-cm-3)

Solution:


For water column in one arm of U - tube
h1 = 18 cm, ρ1 = 1 gm cm-3
For spint column in other arm of U - tube
h2 18 cm, ρ2 = ?
If P1 and P2 be the pressures exerted by water column and spirit column respectively
Then P1 = h1 ρ1 g
and P2 = h2 ρ2 g
The mercury columns in the two arms of U-tube are at the same level, thus in equilibrium
P1 = P2
or h1 ρ1 g = h2 ρ2 g

QUESTION: 28

If an iron ball and a wooden ball of the same radius are released from a height 'h' in vaccum, then time taken by both of them to reach ground will be

Solution:

Time taken by any body of mass m to reach the ground when dropped from a height h

From this equation time is independent of mass so t1 = t2
Since they are in vacuum there will be no air resistance, so time taken will be exactly equal.

QUESTION: 29

α- particle is equivalent to

Solution:

Positively charged particle emitted by various radioactive materials during decay. It consists of two neutrons and two protons, and is thus identical to the nucleus of a helium atom. The rest mass of the alpha particle amounts to 6.64424·10-27 kg, or 3.7273·109 eV.

QUESTION: 30

A body of mass 4 kg weighs 4.8 kg when suspended in a moving lift. The acceleration of the lift is

Solution:

 As the apparent weight increase therefore we can say that acceleration of the lift is in upward direction.   

QUESTION: 31

The magnifying power of a telescope can be increased by increasing

Solution:
QUESTION: 32

A mass attached to a spring oscillates every 2 s. If the mass is increased by 2 kg, then time period increases by 1 s. The initial mass is

Solution:
QUESTION: 33

The overall process of carbon - Nitrogen fusion cycle results in fusion of four protons to yield the helium nucleus and two

Solution:
QUESTION: 34

When green light is incident on a certain metal surface electrons are emitted, but no electrons are emitted by yellow light. If red light is incident on the same metal surface then

Solution:
QUESTION: 35

Light of wavelength λ strikes a photo-sensitive surface and electrons are ejected with kinetic energy E. If the kinetic energy is to be increased to 2E, the wavelength must be changed to λ′ where

Solution:

QUESTION: 36

At the top of the trajectory of a projectile, the acceleration is

Solution:
QUESTION: 37

A satisfactory photographic print is obtained when the exposure time is 10 seconds at a distance of 2 m from a 60 Cd lamp. The time of exposure required for the same quality print at a distance of 4 m from a 120 Cd lamp is

Solution:

  Here D is constant and I  

 

QUESTION: 38

A convex lens is making full image of an object. If half of the lens is covered by an opaque object, then

Solution:

When half the lens is covered, the amount of light passing through it will decrease resulting in decrease of intensity of the image. Exposed portion of the lens will form full image of the object. 

QUESTION: 39

Fraunhofer spectrum is a

Solution:

Fraunhofer lines, in astronomical spectroscopy, any of the dark (absorption) lines in the spectrum of the Sun or other star, caused by selective absorption of the Sun's or star's radiation at specific wavelengths by the various elements existing as gases in its atmosphere.

QUESTION: 40

A person cannot see clearly distances more than 40 cm. He advised to use lens of power

Solution:
QUESTION: 41

In which case application of angular velocity is useful

Solution:
QUESTION: 42

A body executes S.H.M. of period 3 s under the influence of one force, and S.H.M. of period 4 s under the influence of a second force. when both the forces act simultaneously in the same direction, the period of oscillation will be

Solution:
QUESTION: 43

The equation of motion of a particle excuting SHM is a + 16π2x = 0 . In this equation 'a' is linear acceleration in m/s2, of the particle at a displacement x in metres. The time period of SHM, in seconds is:

Solution:
QUESTION: 44

A semiconductor has an electron concentration of 8 x 1013 per m3 and the hole concentration of 5.5 x 1012per m3. The semiconductor is

Solution:
QUESTION: 45

A tuning fork produces certain sound waves in a medium. If temperature of the medium changes, which one of the following will change.

Solution:

As velocity is directly proportional to temperature, and
frequency x wavelength =velocity,
Frequency is the property of source so that it remains constant, but wavelength will change.

QUESTION: 46

p-n junction diode can be used as

Solution:
QUESTION: 47

In a capillary tube experiment, a vertical 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes

Solution:

QUESTION: 48

When a current is passed through water, acidified with a dilute sulphuric acid, the gases formed at the platinum electrodes are

Solution:
QUESTION: 49

In Seebeck series Sb appears before Bi. In a Sb-Bi thermocouple current flows from

Solution:

For a given difference in temperature of two junctions of a thermocouple, the thermo e.m.f. is more if the separation between two metals in the Seebeck series used in the formation of thermocouple Sb and Bi are extreme metals of the series.

QUESTION: 50

Which of the following is not equal to watt

Solution:

QUESTION: 51

A cylinder contained 10 kg of gas at 107 N/m2. The quantity of gas taken out of cylinder if final pressure is 2.5 x 106N ∕ m2 is (temp. is constant)

Solution:

At constant temperature for the given volume of gas P1/P2 = m1/M2 

The quantity of gas taken out of the cylinder = 10 – 2.5 = 7.5 kg.

QUESTION: 52

At 100ºC, the substance that causes the most severe burn, is

Solution:
QUESTION: 53

A gas is compressed at a constant pressure of 50 N/m2 from a volume of 10 m3 to a volume of 4 m3. Energy of 100 J is then added to the gas by heating. Its internal energy is

Solution:

QUESTION: 54

Huygen's wave theory of light can not explain

Solution:

Huygens wave theory of light cannot explain photoelectric effect phenomenon. It explains rectilinear propagation, reflection, refraction, interference, diffraction and polarization.   

 

QUESTION: 55

The unit of e.m.f. is

Solution:
QUESTION: 56

The force F on a sphere of radius 'a' moving in a medium with velocity 'v' is given by F=6πηav. The dimensions of η are

Solution:

QUESTION: 57

In interference pattern, the energy is

Solution:
QUESTION: 58

A man is watching two trains, one leaving and the other coming in with equal speeds of 4 m/sec. If they sound their whistles, each of frequency 240 Hz, the number of beats heard by the man (velocity of sound in air = 320 m/sec) will be equal to

Solution:

Frequency of sound heard by the man from approaching train 

Frequency of sound heard by the man from receding train  

 Hence, number of beats heard by man per sec  = na − nr = 243 − 237 = 6

QUESTION: 59

A car sounding a horn of frequency 1000 Hz passes an observer. The ratio of frequencies of the horn noted by the observer before and after passing of the car is 11:9. If the speed of sound is υ, the speed of the car is

Solution:
QUESTION: 60

A boy of mass 42 Kg eats bananas of 980 calories. If this energy is used up to lift him from the ground, the height to which he can move up is

Solution:

Height = h.
Potential Energy (P.E) = 980 Calories = 4100.32 Jule
Now P.E = mgh
4100.32 = 42 x 9.8 x h

QUESTION: 61

The enthalpies of formation for C₂H₄(g), CO₂(g) and H₂O(l) at 25ºC and 1 atm. pressure be 52, -395 and -286 kJ mol⁻1 respectively. The enthalpy of combustion of C₂H₄(g) will be

Solution:
QUESTION: 62

An example of a compound with the functional group - O - is

Solution:
QUESTION: 63

The reaction between primary amine, chloroform and alcoholic caustic potash is called

Solution:

The carbylamine reaction (also known as the Hoffmann isocyanide synthesis) is the synthesis of an isocyanide by the reaction of a primary amine, chloroform, and base. The conversion involves the intermediacy of dichlorocarbene.

QUESTION: 64

Which of the following composition of the petroleum corresponds to kerosene oil?

Solution:
QUESTION: 65

The homologue of ethyne is

Solution:

C2H2 is Ethyne (homologue of alkyne)
C3H4 is propyne (homologue of alkyne)
C3H8 → propane (homologue of alkane)
C2H6 → Ethane (homologue of alkane)

QUESTION: 66

1-Butyne reacts with cold alkaline KMnO₄ to yield

Solution:

QUESTION: 67

Which of the following salt would give SO₂ with hot and dil.H₂SO₄ and also decolourise Br₂ water?

Solution:
QUESTION: 68

Azimuthal quantum number of last electron of ₁₁Na is

Solution:
QUESTION: 69

Which of the following set of quantum numbers is correct for an electron in 4f-orbital?

Solution:

QUESTION: 70

Electrons will first enter into the orbital with the set of quantum numbers

Solution:

We fill up electron in increasing energy order.in which electronic configuration n+l value is greater, it's energy also will be greater.but here n+l value is same.so we shall consider n(principle quantum number).in which electronic configuration n value is greater it's energy also will be greater.there for option C is correct.

QUESTION: 71

A σ - bond is

Solution:
QUESTION: 72

The electronic configuration of metal M is 1s₂2s₂2p63s1. The formula of its oxide will be

Solution:
QUESTION: 73

In which of the following molecules, is the covalent bond most polar?

Solution:

Difference of electronegativity between H and Cl is more

QUESTION: 74

For an ideal gas the relationship between internal energy change .(∆E) and enthalpy change(∆H)is

Solution:
QUESTION: 75

The values of Kp1 and Kp2 for the reactions


are in the ratio of 9:1. If degree of dissociation of X and A be equal, then total pressure at equilibrium (1) and (2) are in the ratio:

Solution:

From equation.
X     ⇌    Y  +   Z
1            0        0     initial mole
(1-α)     α         α     mole at equilibrium


 

 

QUESTION: 76

Which of these does not influence the rate of reaction?

Solution:
QUESTION: 77

The intensive property among these quantities is

Solution:

An intensive property is a bulk property, meaning that it is a local physical property of a system that does not depend on the system size or the amount of material in the system. Examples of intensive properties include temperature, T; refractive index, n; density, ρ; and hardness of an object, η.

QUESTION: 78

Tranquilisers are substances used for the treatment of

Solution:

Tranquilizer, also spelled Tranquillizer, drug that is used to reduce anxiety, fear, tension, agitation, and related states of mental disturbance.

QUESTION: 79

Which of the following IUPAC names is correct?

Solution:
QUESTION: 80

In which of the following solutions are ions present?

Solution:
QUESTION: 81

Which statement is incorrect?

Solution:
QUESTION: 82

Which of the following is isoelectronic with carbon atom?

Solution:

Isoelectronic species: a group of ions, atoms, or molecules that have the same number of electrons. Thus, carbon and N+ are isoelectronic with 6 electrons.
Electronic configuration of C and N+:

QUESTION: 83

When a metal is to be extracted from its ore and if the gangue associated with the ore is sillica, then

Solution:

QUESTION: 84

A real gas most closely approaches the behaviour of an ideal gas at

Solution:
QUESTION: 85

Which of the following statements is wrong for gases ?

Solution:

The mass of gas can be determined by weighing the container, filled with gas and again weighing this container after removing the gas. The difference between the two weights gives the mass of the gas.

QUESTION: 86

Which one of following properties of alkali metals increases in magnitude as the atomic number rises?

Solution:

Element -  Li   Na    K      Rb   Cs

                 76   102  138 152   167

as the atomic no. increases the no. of shells increases hence, atomic radius increases.

QUESTION: 87

'Thermit' is a mixture of X parts of ferric oxide and Y parts of aluminium powder. X, Y respectively are

Solution:
QUESTION: 88

Which one of the following is a correct set for SiO₂?

Solution:
QUESTION: 89

Acidified solutions of sodium thiosulphate are unstable because in thiosulphate

Solution:
QUESTION: 90

The equivalent weight of phosphoric acid (H₃PO₄) in the reaction
NaOH+H₃PO₄ → NaH₂PO₄+H₂O is

Solution:

QUESTION: 91

Butter of tin is

Solution:
QUESTION: 92

The pink colour of phenolphthalein, in alkaline medium, is due to

Solution:

Phenolphthalein (HIn) is weakly acidic in nature. And in aqueous solution, it dissociates into and ions. The pink colour of the solution is due to the concentration of ions in the solution. Under acidic conditions, the concentration of in the solution is very low and concentration of is high, hence it is colourless.

QUESTION: 93

Lithium and magnesium are similar in their properties due to the same

Solution:

Lithium is an alkali metals whereas magnesium is an alkaline earth metal. Lithium is present in 1st group and magnesium is in 2nd group. The chemical properties of Li and Mg are similar due to diagonal relationship. 


1.) The size of Li and Mg are similar.
2.) Li and Mg are harder and hence have high melting point irrespective of their group elements.
3.) Both show covalent nature. 
4.) Carbonates of Li and Mg decomposes on heating to liberate CO2.
5.) Li and Mg can directly combine with N2.
6.) Both Li and Mg combine with carbon on heating.
7.) Both of these do not form alums. 

QUESTION: 94

Ostwald's dilution law is applicable to

Solution:

Ostwald’s dilution law is the application of the law of mass action to weak electrolytes in solution.

QUESTION: 95

The hydrides ion H⁻ is stronger base than its hydroxide ion OH⁻ .Which of the following reactions will occur if sodium hydrides (NaH) is disolved in water ?

Solution:
QUESTION: 96

The reaction of KMnO₄ and HCl results in

Solution:

QUESTION: 97

The pH of a solution is increased from 3 to 6; its H⁺ ion concentration will be

Solution:

pH= - log H+,

Using antilog, we will get H+ =10-3 for pH = 3 nd H= 10-6 for p= 6.

So reduced by 1000 times..

QUESTION: 98

Which of the following compounds can exhibit functional isomerism?

Solution:
QUESTION: 99

The projectile, which experiences minimum repulsion on approaching a particular nucleus, is

Solution:
QUESTION: 100

The order of decreasing ease of reaction with ammonia is

Solution:

NH3 being nucleophile will attack acid anhydride and esters readily but will not attack another nucleophile (Lewis base) ether. Therefore order will be Anhydrides > Esters > Ethers

QUESTION: 101

When chloroform reacts with acetone the product is

Solution:

Chloroform combines with acetone in the presence of potassium hydroxide to give chloretone, which is used as a sleep producing (hypnotic) drug.

The reaction is represented as follows:

QUESTION: 102

Half-life of a redioactive substance which disintegrates by 75% in 60 minutes will be

Solution:
QUESTION: 103

Of the following four reactions, formic acid and acetic acid differ in which respect?

Solution:

Whereas

QUESTION: 104

When glycerol is treated with excess of HI, it produces

Solution:

Glycerol is a trihydric alcohol whose IUPAC name is propane-1, 2, 3-triol and in industry it is known as glycerine.When glycerol is heated with excess of HI,the allyl iodide formed first is reduced to propene.Propene in presence of excess of HI forms iso-propyl iodide.

 

QUESTION: 105

Phenol, p-Methylphenol, m-Nitrophenol and p-Nitrophenol follows order of increasing acidic strength

Solution:
QUESTION: 106

Conc. HNO3 forms NO2+ in presence of :

Solution:
QUESTION: 107

Which of the following compounds can react with the Lewis base Cl in a Lewis acid-base reaction?

Solution:
QUESTION: 108

N-ethyl-N-methylpropan-1-amine is

Solution:

The structure of N-ethyl-N-methyl propan-1-amine is

Since, in this compound, the three valencies of nitrogen are satisfied by three different alkyl group, it is 3o amine.

QUESTION: 109

Normality of 0.3 M H3PO4 solution is

Solution:

For acids,
Normality = molarity x basicity
Now, basicity of H3PO4 = 3
So, Normality = 0.3 x 3 = 0.9

QUESTION: 110

SnCl₂ gives a precipitate with a solution of HgCl₂. In this process HgCl₂ is

Solution:
QUESTION: 111

The colour of K₂Cr₂O₇ changes from red orange to lemon yellow on treatment with aqueous KOH because of

Solution:

Colour of K2Cr2O7 changes from orange to lemon yellow on treatment with aqueous koh because of conversion of dichromate ion to chromate.

QUESTION: 112

The edge length of the unit cell of body-centred lattice is 500 pm. If the radius of cation is 169 pm, then what is radius of anion?

Solution:
QUESTION: 113

Empirical formula of a compound is CH₂O. If its molecular weight is 180, then the molecular formula of the compound is

Solution:

The empirical formula of the compound is CH2O, which has two numbers of atoms of hydrogen, and one atom of oxygen for each carbon. The mass of CH2O = 12+2 x 1+16 = 30. The approximate molecular weight of the compound is 180. So, the molecular formula of the given compound is C6H12O6.

QUESTION: 114

Bakelite is prepared by the reaction between

Solution:

Bakelite or polyoxybenzylmethylenglycolanhydride was the first plastic made from synthetic components. It is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde.

QUESTION: 115

Which of the following can exhibit optical isomerism?

Solution:
QUESTION: 116

Equivalent weight of which of the following metal can be determined by the hydrogen displacement method?

Solution:
QUESTION: 117

Equimolar solutions in the same solvent have

Solution:

Boiling point and freezing point depend on Kb (molal elevation constant) and Kf(molal depression constant) of the solvent. Thus equimolar solution (of the non-electrolyte) will have same boiling point and also same freezing point. 

ΔTf=Kf × molality 

ΔTb=Kb × molality

Note: In question nature of solute has not been mentioned. Hence, we have assumed that solute is non-electrolyte.

QUESTION: 118

Silver chloride dissolves in excess of NH4OH. The cation present in this solution is

Solution:

QUESTION: 119

A reagent that can separate Fe and Zn is

Solution:
QUESTION: 120

Adsorbed acetic acid on activated charcoal is

Solution:
QUESTION: 121

Which factor promotes the appearance of the platelet plug?

Solution:
QUESTION: 122

In coelenterates,the mouth of medusa is located on:

Solution:

Medusa has a bowl or umbrella shaped body with marginal tentacles and mouth is centrally located in a projection called manubrium on the ventral concave surface. Medusae are generally motile and concerned with sexual reproduction.

QUESTION: 123

Which of these feeds upon dead organic matter with its maxillae picking up the food particles and bringing these to mandibles for mastication ?

Solution:
QUESTION: 124

Which of the following is the work of centrosome ?

Solution:

Centrosomes are structures found inside of cells. They are made from two centrioles. Centrioles are microtubule rings. The main purpose of a centrosome is to organize microtubules and provide structure for the cell, as well as work to pull chromatids apart during cell division.

QUESTION: 125

How many molecules of oxygen are carried by one molecule of haemoglobin?

Solution:

Hemoglobin, or Hb, is a protein molecule found in red blood cells (erythrocytes) made of four subunits: two alpha subunits and two beta subunits. Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each hemoglobin molecule to bind four oxygen molecules.

QUESTION: 126

First heart transplant was performed by

Solution:

On 3 December 1967, South African doctor, Dr Christiaan (Chris) Barnard, performed the world's first human to human heart transplant at Groote Schuur Hospital, Cape Town.

QUESTION: 127

Coriandrum sativum is the botanical name of

Solution:

Coriander (Coriandrum sativum), also known as cilantro, Chinese parsley or dhania, is an annual herb in the family Apiaceae. Coriander is native to regions spanning from southern Europe and North Africa to southwestern Asia.

QUESTION: 128

The frenulum is the membrane attached to the inferior surface of the _____.

Solution:

The inferior surface of the tongue is connected to the floor of the mouth by a median fold of mucous membrane, the frenulum. The submandibular duct opens on an elevation, the sublingual papilla, on the sides of the frenulum.

QUESTION: 129

Which of the following is true of the liver?

Solution:
QUESTION: 130

The plants face wilting due to the use of excessive fertilizers, because of

Solution:

By using of excessive fertilizers, outer solutions of plants get hypertonic,then water in plants comes out to mentain osmolarity, so plants face wilting.

QUESTION: 131

Botanical name of cauliflower is

Solution:
QUESTION: 132

Agriculture was originated in mesolithic age about

Solution:
QUESTION: 133

Moderate rainfall during summer produces

Solution:
QUESTION: 134

Which one has maximum biomass?

Solution:

Biomass refers to the amount of living organic matter. Forest ecosystem have the maximum biomass, because it includes organisms of all tropic levels as compared to pond, lake or grassland ecosystem. In forest ecosystems productivity is also high that contributes to maximum biomass.

QUESTION: 135

Which one has always a steeper vertical gradient?

Solution:
QUESTION: 136

'Sella turcica' is a depression in

Solution:
QUESTION: 137

Which of the following is a duel purpose breed?

Solution:

Deoni is a dual purpose breed, usually females are good milk yielders and the males serve in ploughing.

QUESTION: 138

A plant introduced from new world to old world is

Solution:

Christopher Columbus introduced horses, sugar plants, and disease to the New World, while facilitating the introduction of New World commodities like sugar, tobacco, chocolate, and potatoes to the Old World. The process by which commodities, people, and diseases crossed the Atlantic is known as the Columbian Exchange.

QUESTION: 139

Father of genetics is

Solution:

Father of Genetics. Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent.

QUESTION: 140

Telomere of eukaryotic chromosome possesses short segments of

Solution:
QUESTION: 141

Which are identical?

Solution:
QUESTION: 142

Sickle-cell anaemia is an example of :

Solution:
QUESTION: 143

Which of the following plant produces seeds but not flowers ?

Solution:

Pinus belong to order coniferales of Gymnosperms. The plant is differentiated into root, stem and leaves. Plants are monoecious. Both male and female cones are borne on the same plant. It develops clusters of shortly stalked male cones subterminally on the lower branches and female cones in circle of 2 - 6 on upper long branches. A male cone has a central axis and a number of spirally arranged microsporophylls. A microsporophyll bears two oblong microsporangia abaxially on the proximal part. The terminal flattened part is bent and sterile. A microsporangium produces a large number of yellow pollen grains. Each pollen grain has two wings or air sacs for floating in the air. The central axis of female cone bears paired scales. In each pair the lower scale is bract scale while the upper one is ovuliferous scale (= megasporophyll complex), the terminal sterile part of ovuliferous scale is broad and called apophysis. The proximal adaxial side bears two ovules.

QUESTION: 144

The wood of pinus is

Solution:

The wood of Pinus is pycnoxylic (more than one ring due to epimeral nature of cambium) and monoxylic (formed by the activity of single cambium).

QUESTION: 145

What is common in Whale, Bat and Rat?

Solution:

Whale, bat and rat are mammals. Diaphragm is present in mammals. The diaphragm separates the thoracic cavity (with lung and heart) from the abdominal cavity (with digestive system and urogenital system). In its relaxed state, the diaphragm is shaped like a dome. It is controlled by the phrenic nerve.

QUESTION: 146

Tay-Sachs disease is associated with

Solution:
QUESTION: 147

Sequence of eye covering (outer to inner) is

Solution:

Sclera: The tough outer coat that protects the entire eyeball.

Choroid: Layer of the eye behind the retina, contains blood vessels that nourish the retina.

Retina: The light sensitive layer of tissue that lines the back of the eye.

QUESTION: 148

In India, human population is heavily weighed towards the younger age groups as a result of

Solution:

A population having mostly younger age group means its birth rate is high. If death rate is increased then the proportion of old age group will be increased. But in this case death rate has increasing trend thence in a human population which is heavily weighted towards the younger age groups; there will be short life span and high birth rate.

QUESTION: 149

Which of the following contain lymph fluid?

Solution:
QUESTION: 150

Proprioceptors are

Solution:

Proprioceptors are sensory receptors that relay information to the brain about our body's position. The brain analyzes the information providing an awareness of where the body is in space. Proprioception and the proprioceptors that facilitate proprioception allow us to do things without seeing everything we do.

QUESTION: 151

Closed circulatory system does not occur in:

Solution:
QUESTION: 152

Exanthema is result of deficiency of

Solution:
QUESTION: 153

Which of these would not be found in lymph fluid?

Solution:
QUESTION: 154

A plant is kept in 300 ppm CO₂ concentration.What will happen to it

Solution:
QUESTION: 155

Antimalaria drug is got from

Solution:
QUESTION: 156

Vestigial pelvic girdle and bones of hind limbs are characteristic of:

Solution:

Whales have a vestigial pelvic girdle and reduced bones of hind limbs.

QUESTION: 157

Physiologically active form of phytochrome is

Solution:
QUESTION: 158

NAD is

Solution:

Nicotinamide adenine dinucleotide is a cofactor that is central to metabolism. Found in all living cells, NAD is called a dinucleotide because it consists of two nucleotides joined through their phosphate groups. One nucleotide contains an adenine nucleobase and the other nicotinamide.

QUESTION: 159

Oswald Tippo's classification is based on

Solution:

In 1942, Oswald Tippo proposed a modern classification of the plant kingdom. He divided entire plant Kingdom into two major groups, Thallophyta and Embryophyta on the basis of absence and presence of an embryo.

QUESTION: 160

In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?

Solution:
QUESTION: 161

Auxin suppresses growth of

Solution:
QUESTION: 162

Nitrogen fixation occurs in

Solution:
QUESTION: 163

Glass Rope sponge is

Solution:

The Glass Rope Sponge is a very unique species of sponges. For instance, these sponges have no organ system or tissues, can grow to be 6ft tall, and its skeleton is completely made up of silica, giving this species their glass-like appearance.

QUESTION: 164

Ozone layer of stratosphere requires protection from indiscriminate use of

Solution:

 Aerosols and high flying jets release nitric oxide into the upper atmosphere which leads to the distinction of ozone layer.

QUESTION: 165

In rabbit, man and other placental mammals the organ in which fertilization of ovum occurs, is

Solution:
QUESTION: 166

The application of engineering and technological principles to the life sciences is called

Solution:
QUESTION: 167

Spraying of DDT on crops causes pollution of

Solution:
QUESTION: 168

A pollen grain is best defined as

Solution:
QUESTION: 169

Intraspecific cross pollination is

Solution:

• Allogamy is the cross-pollination in which pollen grains are transferred from the anther of one flower to the stigma of another flower borne on a separate plant

• Geitonogamy is a type of self-pollination in which pollens are transferred from the anther of one flower to the stigma of another flower of the same plant

• Xenogamy is the cross-pollination between the flowers of different plants. It produces heterozygosity because two genetically different parents are involved

• Alloautogamy is the condition in which flowers get self-pollinated when cross-pollination fails to occur

Thus, intraspecific (means within the same species) cross-pollination is allogamy as it involves pollination between plants of same species

So, the correct answer is 'Allogamy'

QUESTION: 170

Air pressure is reduced inside the thoracic cavity when

Solution:
QUESTION: 171

The formation of Carbaminohemoglobin occurs in the

Solution:
QUESTION: 172

Number of steps involved in release of CO₂ during areobic respiration is

Solution:
QUESTION: 173

In case NADH is oxidised in a single step to from water

Solution:
QUESTION: 174

Accessory buds are