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# JIPMER Previous Paper 2012

## 200 Questions MCQ Test JIPMER 2020: Subject wise and Full Length Mock Tests | JIPMER Previous Paper 2012

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This mock test of JIPMER Previous Paper 2012 for NEET helps you for every NEET entrance exam. This contains 200 Multiple Choice Questions for NEET JIPMER Previous Paper 2012 (mcq) to study with solutions a complete question bank. The solved questions answers in this JIPMER Previous Paper 2012 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this JIPMER Previous Paper 2012 exercise for a better result in the exam. You can find other JIPMER Previous Paper 2012 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

### The cylindrical tube of a spray pump has a cross-section of 8 cm2, one end of which has 40 fine holes each of area 10-8 m2. If the liquid flows inside the tube with a speed of 0.15 m min-1, the speed with which the liquid is ejected through the holes is

Solution:  QUESTION: 2

### Which one of the following graph represents the variation of maximum kinetic energy (Ek ) of the emitted electrons with frequency v in photoelectric effect correctly?

Solution:

De-Broglie wavelength i.e. graph will be a rectangular hyperbola.

QUESTION: 3

### A vessel of height 2d is half filled with a liquid of refractive index √2 and the other half with a liquid of refractive index n (the given liquids are immiscible). Then, the apparent depth of the inner surface of the bottom of the vessel (neglecting the thickness of the bottom of the vessel) will be

Solution:

The depth of the image of an object submerged in a transperent medium; it is reduced from the real depth of the object by a factor equal to the relative index of refraction of the medium with respect to air.

Refractive index μ = For 1st liquid  Similarly, for 2nd liquid,  Total apparent depth = x1  + x2 QUESTION: 4

A shell of mass 20 kg at rest explodes into two fragments whose masses are in the ratio 2 : 3. The smaller fragment moves with a velocity of 6 m/s. The kinetic energy of the larger fragment is

Solution:

Total mass of the shell = 20 kg

Ratio of the masses of the fragments = 2: 3

∴ Masses of the fragments are 8 kg and 12 kg Now, according to the conservation of momentum , m1v= m2v2

∴ 8 × 6 = 12 × v

v (velocity of the larger fragment) = 4 m/s

Kinetic energy QUESTION: 5

An electric bulb has a rated power of 50 W at 100 V. If it is used on an AC source 200 V, 50 Hz, a choke has to be used in series with it. This choke should have an inductance of

Solution:  QUESTION: 6

In Young’s double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is

Solution:

In Young's double slit experiment half angular width is given by   QUESTION: 7

​A parallel plate capacitor with air as the dielectric has capacitance C. A slab of dielectric constant K and having the same thickness as the separation between the plates is introduced so as to fill one-fourth of the capacitor as shown in the figure. The new capacitance will be Solution:

Capacitor with air as the dielectric has capacitance

C1 = ɛo/d (3A/4) = 3 ɛoA/4d

Similarly the capacitor with k as dielectric constant has capacitance QUESTION: 8

Three concurrent coplanar forces 1 N, 2 N and 3 N acting along different directions on a body

Solution:

We can clearly see that the first two forces 1N,2N if they are in the same direction, then they would equal to the third force 3N. But it is given that the three forces are in different directions. So there is no possibility of equilibrium with these forces in different directions.

QUESTION: 9

The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is​ Solution: Word done W = Area ABCEFDA = Area ABCD + Area CEFD  QUESTION: 10

Horizontal tube of non-uniform cross-section has radii of 0.1 m and 0.05 m respectively at M and N. For a streamline flow of liquid, the rate of liquid flow is Solution:

According to principle of continuity, for streamline flow of fluid
through a tube of non-uniform cross-section the rate of flow of fluid
(Q) is same at every point in the tube.
i.e, Av = constant Therefore, the rate of flow of fluid is same at M and N.

QUESTION: 11

A coil of n number of turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively. When a current of strength I is passed through the coil, the magnetic field at its centre is

Solution: Number of turns per unit width = Consider an elemental ring of radius x and with thickness dx Number of turns in the ring  Magnetic field at the centre due to the ring element ∴ Field at the centre  QUESTION: 12

A certain vector in the xy-plane has an x-component of 4 m and a y-component of 10 m. It is then rotated in the xy-plane sothatits x-component is doubled. Then, its new y-component is (approximately)

Solution:
QUESTION: 13

A police party is moving in a jeep at a constant speed v. They saw a thief at a distance x on a motorcycle which is at rest. The moment the police saw the thief, the thief started at constant acceleration a Which of the following relations is true if the police is able to catch the thief?

Solution:

Let the police party catch the thief after t

Distance travelled by police party in t  = v t

and distance travelled by thief   Since by using the Quadratic equation formula QUESTION: 14

If two soap bubbles of different radii are connected by a tube, then

Solution:

The excess pressure inside the soap bubble is inversely proportional to the radius of soap bubble i.e. P ∝1/r, r being the radius of the bubble. It follows that pressure inside a smaller bubble is greater than that inside a bigger bubble. Thus, if these two bubbles are connected by a tube, air will flow from smaller bubble to bigger bubble and the bigger bubble grows at the expense of the smaller one.

QUESTION: 15

The thermo emf of a hypothetical thermocouple varies with the temperature e of hot junction as E = aθ + bθ2 in volts, where the ratio a / b is 700°C. If the cold junction is kept at O°C, then the neutral, temperature is

Solution:

The thermo emf is given by E = aθ + bθ2

For neutral temperature ⇒ a + 2bθ= 0   But neutral temperature can never be negative (less than zero) i.e.,  θn< |0oC|

Hence, no neutral temperature is possible for this thermocouple.

QUESTION: 16

A launching vehicle carrying an artificial’ satellite of mass m is set for launch on the surface of the earth of mass M and radius R. If the satellite is intended to move in a circular orbit of radius 7 R, the minimum energy required to be spent by the launching vehicle onthe satellite is (Gravitational constant = G)

Solution:
QUESTION: 17

The two lenses of an achromatic doublet should have

Solution:

The two lenses of an achromatic doublet should have, sum of the product of their powers and dispersive power equal to zero.

QUESTION: 18

If the ratio of lengths, radii and Young’s modulus of steel and brass wires shown in the figure are a, b and e respectively, the ratiobetween the increase in lengths of brass and steel wires would be​ Solution:

Free body diagram of the two blocks are  Let Young's modulus of steel is Y1  and of brass is Y2 Dividing Eq. (i) by Eq. (ii), we get Force on steel wire from free body diagram

T = F1 = 2 g N

Force on brass wire from free body diagram

F2 = T' = T + 2g

= 4 g N

Now, putting the values of F1 , F2   Eq. (iii) we get QUESTION: 19

A soap bubble of radius r is blown up to form a bubble of radius 2 r under isothermal conditions. If T is the surface tension of soap solution, the energy spent in the blowing

Solution:

Initially area of soap bubble Under isothermal condition radius becomes 2 r, Then, area A2 =   Increase in surface area   Energy spent W = T × ΔA

= T . 24 W = 24 QUESTION: 20

A current of 1.6 A is passed through solution of CuSO4. How many Cu++ ions are liberated in one minute? (Electronic charge =1.6 x 10-19 C)

Solution:

Given:- Current = 1.6 A

t = 1 × 60s = 60 s

Charge flowing in one minute, q = I × t

= 1.6 × 60

Charge required to liberate one copper ion 2C

Number of Cu2+ liberated QUESTION: 21

A magnetic field exerts no force on

Solution:

A moving electric charge has a magnetic field associated with it. So, it's magnetic field interacts with the external magnetic field and a force is exerted on the moving charge.
But, a fixed charge does not have any magnetic field associated with it, so id does not experience any force in a magnetic field.

QUESTION: 22

In an L-C-R circuit inductance is changed from L to L/2. To keep the same resonance frequency, C should be changed to

Solution:
QUESTION: 23

The sound waves after. being converted into electrical waves are not transmitted as such because

Solution:
QUESTION: 24

The tip of a needle does not give a sharp image on a screen. This is due to

Solution:

Image is not sharp because of deviation of light from straight line path account of diffraction of light.

QUESTION: 25

An engine moving towards a wall with a velocity 50 m/s emits a note of 1.2 kHz. Speed of sound in air is 350 m/s. The frequency of the note after reflection from the wall as heard by the driver of the engine is

Solution:

The reflected sound appears to propagate in a direction opposite to that of moving engine. Thus, the source and the observer can be presumed to approach each other with same velocity.  QUESTION: 26

The surface temperature of the sun which has maximum energy emission at 500 nm is 6000 K. The temperature of a star which has maximum energy emission at 400 nm will be

Solution:

Wein's displacement law:-

Relationship between the temperature of a black body ( an ideal substance that emits and absorbs all frequencies of light) and the wavelength at which it emits the most light. By using Wein's Displacement law, ⇒     500 × 6000 = 400 × T2 QUESTION: 27

The truth table given below is for (A and B are the inputs, Y is the output) Solution:
QUESTION: 28

Two rectangular blocks A and B of masses 2 kg and 3 kg respectively are connected by a spring of spring constant 10.8 Nm-1 and are placed on a frictionless horizontal surface. The block A was given an ‘initial velocity of 0.15 ms-1 in the direction shown in the figure. The maximum compression of the spring during the motion is​ Solution:

As the block A moves  with velocity 0.15ms−1, it compresses the  spring which pushes B towards right. A goes on compressing the spring till the velocity acquired by B becomes equal to the velocity of A, ie, 0.15ms−1,

Let this velocity be v. Now, spring is in a state of maximum compression. Let x be the maximum compression at this stage. According to the law of conservation of linear momentum, we get  mAu = (mA+mB)v or v = According to the law of conservation of energy,      QUESTION: 29

0.1 mof water at 80°C is mixed with 0.3 mof water at 60°C. The final temperature of the mixture is

Solution:

Let T°C be final temperature of the mixture.
According to principle of calorimetry,
Heat lost = Heat gained
∴ 0.1× 103 × swater × (80−T)
= 0.3 × 103 × swater × (T−60)
⇒ T = 65C

QUESTION: 30

y = 3 sin π(t/2 -x/4) represents an equation of a progressive wave, where t is in second and x is in metre. The distance travelled by the wave in 5 s is

Solution:
QUESTION: 31

A body of mass m1 = 4 kg moves at 5i m/s and another body of mass m2 = 2 kg moves at 10 i m/ s. The kinetic energy of centre of mass is

Solution:

The total kinetic energy of a multiparticle system is equal to the sum of particles in the systems.

The centre of mass is a point that represents the average location for the total mass of system.  QUESTION: 32

A wheel of radius 0.4 m can rotate freely about its axis as shown in the figure. A string is wrapped over its rim and a mass of 4 kg is hung. An angular acceleration of 8 rad- s-2 is produced in it due to the torque. Then, moment of inertia of the wheel is (g = 10 ms-2) Solution:
QUESTION: 33

An object start sliding on a frictionless inclined plane and from same height another object start falling freely.

Solution:

When they both reach the ground, both have converted that identical energy component kinetic energy.

Thus, the object sliding down a frictionless incline will reach the same velocity as the one dropped straight down.

The times to reach the speed to reach the speed will not be the same, the dropped one will reach it faster.

QUESTION: 34

A boy on a cycle pedals around a circle of 20 metres radius at a speed of 20 m/s, The combined mass of the body and the cycle makes with the vertical so that it may not fall is (g = 9.8 m/ s2) .

Solution:

A body that travels an equal distance in equal amounts of time along a circular path has a constant speed but not constant velocity. This is because velocity is a vector and thus it has magnitude as well as direction.

v = ( Rg tanθ )1/2  QUESTION: 35

A coin is dropped in a lift. It takes time tto reach the floor when lift is stationary. It takes time t2 when lift is moving up with constant acceleration. Then,

Solution:

From equation of motion, we have where u is initial velocity, t is time, g is acceleration due to gravity. At the time of dropping u = 0 When lift moves up
g' = g + a QUESTION: 36

The engine of a jet aircraft applies a thrown force of 105 N during take off and causes the plane to attain a velocity of 1km/s in 10 s. The mass of the plane is

Solution:
QUESTION: 37

A stone weighing 1 kg and sliding on ice with a velocity of 2 m/s is stopped by friction in 10 s. The force of friction (assuming it to be constant) will be

Solution:
QUESTION: 38

The potential energy of a body is given by U = A – Bx2 (where x is the displacement) The magnitude of force acting on the particle is

Solution: QUESTION: 39

When a ceiling fan is switched on, it makes 10 revolution in the first 3 s. Assuming a uniform angular acceleration , how many rotation it will make in the next 3 s

Solution: QUESTION: 40

A hollow sphere of volume V is floating on water surface with half immersed in it. What should be the minimum volume of water poured inside thesphere so that the sphere now sinks into the water

Solution:
QUESTION: 41

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

Solution:
QUESTION: 42 Here, X is

Solution:
QUESTION: 43

Acetic anhydride is prepared in the laboratory by heating sodium acetate with

Solution:
QUESTION: 44

For the homogeneous reaction,
4NH3 + 5O2 ⇔ 4NO + 6H2O
the equilibrium constant K; has the units

Solution:
QUESTION: 45

For the reaction,
NH3 + OCI– → N2H4 + CI–occurring in basic medium, the coefficient of N2H4 in the balanced equation will be

Solution:
QUESTION: 46

Which one of the following has a coordinate bond?

Solution:
QUESTION: 47

Which of the following would exert maximum osmotic pressure ? .

Solution:
QUESTION: 48

Cow milk, an example of natural emulsion, is stabilised by

Solution:
QUESTION: 49

For a zero order reaction

Solution:
QUESTION: 50

The extraction of which of the following metals involves bessemerisation?

Solution:
QUESTION: 51

The correct order of decreasing first ionisation energy is

Solution:
QUESTION: 52

Consider the following reaction,​ What is Y?

Solution:
QUESTION: 53

Which of the following is most basic in nature?

Solution: Ch3nh2 more basic than nh3 coz ch3 has +I effect and ch3 will give its electron to nh2 and in option c there will b steric effect and in d benzene will use n electron so basisity will decreased.
QUESTION: 54

An example of natural biopolymer is

Solution:
QUESTION: 55

Which of the following is known as invert soap?

Solution:
QUESTION: 56

Le-blanc process is employed in the manufacture of

Solution:
QUESTION: 57

Which one of these is not true for benzene?

Solution:
QUESTION: 58

The IUPAC name of acryldehdye is

Solution:
QUESTION: 59

The structures of (CH3)3,CBr and CH3[CH2]3 Br represent

Solution:
QUESTION: 60

Petrol for aviation purpose must contain

Solution:
QUESTION: 61

The solubility product of Hg2l2 is equal to

Solution:
QUESTION: 62

The number of atoms contained in a fcc unit cell of a monoatomic substance is

Solution:
QUESTION: 63

In the first order reaction, 75% of the reactant gets disappeared in 1.386 h. The rate constant of the reaction is

Solution:
QUESTION: 64

Moist hydrogen peroxide can not be dried over conc. H2SO4 because

Solution:
QUESTION: 65

Glauber’s salt is

Solution:
QUESTION: 66

The most basic element is

Solution:
QUESTION: 67

Propyne on passing through red hot copper tube forms

Solution:
QUESTION: 68

Which one of the following is mainly responsible for depletion of ozone layer?

Solution:
QUESTION: 69

On warming with silver powder, chloroform is converted into

Solution:
QUESTION: 70

Ammonia is a Lewis base and it forms complexes with many cations. Which one of the following cations does not form a complex with ammonia?

Solution:

Ammonia is a lewis base. It forms complexes with transition elements like Cd2+ , Cu2+, Ag+ but it does not form complex with Pb2+ as it is not a transition element. QUESTION: 71

Argol, a brown crust, formed during the fermentation of grape juice contains

Solution:
QUESTION: 72 The structure of compound B is

Solution:
QUESTION: 73

The pH value of 0.001 M aqueous solution of NaCI is

Solution:
QUESTION: 74

Which buffer solution comprising of the following has its pH value greater than 7?

Solution:
QUESTION: 75

Which of the following has sp2-hybridisation?

Solution:
QUESTION: 76

Hydrogen molecule differs from chlorine molecule in the following respect.

Solution:
QUESTION: 77

The ratio of the difference in energy between the first and the second Bohr orbit to that between the second and the third Bohr orbit is

Solution:
QUESTION: 78

Graphite is a

Solution:
QUESTION: 79

Which one of the following transition metal ions is diamagnetic?

Solution:
QUESTION: 80

Which of the following metal carbonates decomposes on heating?

Solution:
QUESTION: 81

Gel electrophoresis is used for

Solution: Gel electrophoresis is a technique commonly used in laboratories to seperate charged molecules like DNA ,RNA and Protein according to their size. Charged molecules move through a gel when an electric current is passed across it. An electric current is applied across the gel so that one end of the gel has a positive charge and the other end has a negative charge. The movement of charged molecules is called migration. Moleces migrate towards the opposite charge. A molecule with a negative charge will therefore will be pull towards the positive end.
QUESTION: 82

Polysome is formed by

Solution:
QUESTION: 83

Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

Solution:
QUESTION: 84

Which one of the following in birds, indicates, their reptilian ancestry?

Solution:
QUESTION: 85

Select incorrect pair

Solution: Kingdom-Monera includes all prokaryotes (autotrophic or heterotrophic) viz., mycoplasmas, bacteria, Actinomycetes (mycelial bacteria) and photosynthetic cyanobacteria, while all unicellular eukaryotic organisms like flagellates, diatoms, dinoflagellates, slime moulds, sarcodina, etc. are included in kingdom-Protista.
QUESTION: 86

Bilateral symmetry, metameric segmentation, coelom and open circulatory system are the features of

Solution:
QUESTION: 87

Ancestor of man who first stood erect was

Solution:
QUESTION: 88

Core zone, buffer zone and manipulation zone. are found in

Solution:
QUESTION: 89

Which insecticide is more hazardous to human health?

Solution:
QUESTION: 90

Universal donor is

Solution:
QUESTION: 91

One of these is not concerned with wildlife conservation

Solution:
QUESTION: 92

Largest tiger population is found in

Solution:
QUESTION: 93

Genetic material found in human Immunodeficiency Virus (HIV) is

Solution:
QUESTION: 94

Gigantism and acromegaly are due to

Solution:
QUESTION: 95

If a child is of 0 blood group and his father is of B blood group, the genotype of father is

Solution:
QUESTION: 96

Spermatogenesis is under the regulatory influence of

Solution:
QUESTION: 97

Which of the following can be controlled by using biopesticides?

Solution:
QUESTION: 98

Which hormone is secreted in a woman if pregnancy has occurred?

Solution:
QUESTION: 99

Product of biotechnology is

Solution:
QUESTION: 100

Phase common in aerobic and anaerobic respiration is

Solution:
QUESTION: 101

Oxyntic cells secrete

Solution:
QUESTION: 102

Menstruation is due to sudden

Solution:
QUESTION: 103

Correctly matched set of phylum, class and example is

Solution:
QUESTION: 104

Urea synthesis occurs in

Solution:
QUESTION: 105

Which is common to kidney and skeleton in mammals?

Solution:
QUESTION: 106

Which is regarded as urinary bladder of embryo?

Solution:
QUESTION: 107

Deficiency of vitamin -B12 causes

Solution:
QUESTION: 108

Blood is a kind of

Solution:
QUESTION: 109

Which of these is used• to control human population?

Solution:
QUESTION: 110

Solution:

In alcoholic person, some part of alcohol is changed into acetaldehyde, which stimulates the formation of fat. This fat is deposited over the wall of arteries and also accumulates in liver cells. Due to which liver gets failed and there is very little regulation of carbohydrate, protein and fat metabolism. This disorder is known as fatty liver syndrome. Later on, the liver gets turned into solid, hard, fibrous organ causing liver cirrhosis.

QUESTION: 111

The most primitive vertebrates are

Solution:
QUESTION: 112

Change in the number of body parts is called

Solution: Meristic is actually a specific term that can we used to specify the changed in number of body parts...
QUESTION: 113

Solution:
QUESTION: 114

Origin of life occurred in

Solution:
QUESTION: 115

Branch of zoology dealing with the study of fishes is called

Solution:
QUESTION: 116

Theory of continuity of germplasm was propounded by

Solution:
QUESTION: 117

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

Solution:
QUESTION: 118

The most active phagocytic white blood cells are

Solution:
QUESTION: 119

During the propagation of a nerve impulse, the action potential results from the movement of

Solution:
QUESTION: 120

Darwin’s finches are an excellent example of

Solution:
QUESTION: 121

In which one of the following, male and female gametophytes do not have free-living independent existence?

Solution:
QUESTION: 122

A transgenic food crop, which may help in solving the problem of nightblindness in developing countries is

Solution:
QUESTION: 123

Vascular tissues in flowering plants develop from

Solution:
QUESTION: 124

Nitrogen-fixation in root nodules of Alnus is brought about by

Solution:
QUESTION: 125

A mature pollen grain of Pinus has

Solution:
Solution
A mature pollen grain of Pinus has 4 cells. Three of the four cells break down leaving only a single surviving cell, which will develop into a male gametophyte. Hence, option C is correct.
QUESTION: 126

Polyploidy can be induced by the application of

Solution:
QUESTION: 127

Quantasome are present in

Solution:
QUESTION: 128

In mitochondria, enzyme cytochrome oxidase is present in

Solution:
QUESTION: 129

Which of the following bio-engineered bacteria is utilized for cleaning of marine oil slicks?

Solution:
QUESTION: 130

Green potatoes are toxic due to

Solution: Solanin because it's cause nausea, headache.
QUESTION: 131

Cells obtained from cancerous tumours are known as

Solution:
QUESTION: 132

The plant of Triticum aestivum is

Solution:
QUESTION: 133

Which of the following is a total root parasite?

Solution:
QUESTION: 134

Which of the following tissues consist of living cells?

Solution:
QUESTION: 135

Which is a useful product of epidermal origin?

Solution:
QUESTION: 136

Fern spores are usually

Solution:
QUESTION: 137

When pollen tube enters through micropyle, the process is called

Solution:
QUESTION: 138

Outer wall of pollen grain is made up of

Solution:
QUESTION: 139

Nucleotides are formed by

Solution:
QUESTION: 140

DNA replication occurs in

Solution:
QUESTION: 141

Which of the following plant cells is not surrounded by a cell wall?

Solution:
QUESTION: 142

Which of the following cell organelles stores hydrolytic enzymes?

Solution:
QUESTION: 143

A monocarpic plant is one, which

Solution:
QUESTION: 144

AIDS virus contains

Solution:
QUESTION: 145

Calyptra develops from

Solution:
QUESTION: 146

Protonema is the stage in the life cycle of

Solution:
QUESTION: 147

A fern differs from a moss in having

Solution:
QUESTION: 148

Female cone of Pinus is a

Solution:
QUESTION: 149

Development of an embryo without fertilization is called as

Solution:
QUESTION: 150

Which of the following floral parts forms pericarp after fertilization?

Solution:
QUESTION: 151

Prothallus of the fern produces

Solution:
QUESTION: 152

Which of the following cell organelles is associated with photorespiration?

Solution:
QUESTION: 153

The thickness of unit membrane is

Solution:
QUESTION: 154

Chromosomes are arranged along the equator during

Solution:
QUESTION: 155

Width of the DNA molecule is

Solution:
QUESTION: 156

In gymnosperms, the Ovule is naked because

Solution:
QUESTION: 157

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of

Solution:
QUESTION: 158

The fleshy receptacle of syconus of fig encloses number of

Solution:
QUESTION: 159

Which one of the following is linked to the discovery of bordeaux mixture as a popular fungicide?

Solution:
QUESTION: 160

Unisexuality of flowers prevents

Solution:
QUESTION: 161

Directions (Q 1-5) Out of the four alternatives choose the one which expresses the correct meaning of the given word and blacken the appropriate rectangle [⟩] in the Answer Sheet.
Q. Irreproachable

Solution:
QUESTION: 162

Felicity

Solution:
QUESTION: 163

Knave

Solution:
QUESTION: 164

Frontier

Solution:
QUESTION: 165

Rout