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# NEET Mock Test - 27

## 180 Questions MCQ Test NEET Mock Test Series & Past Year Papers | NEET Mock Test - 27

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This mock test of NEET Mock Test - 27 for NEET helps you for every NEET entrance exam. This contains 180 Multiple Choice Questions for NEET NEET Mock Test - 27 (mcq) to study with solutions a complete question bank. The solved questions answers in this NEET Mock Test - 27 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this NEET Mock Test - 27 exercise for a better result in the exam. You can find other NEET Mock Test - 27 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

Solution:
QUESTION: 2

Solution:
QUESTION: 3

### A proton and an α - particle enter into a region of uniform electric field. The ratio of the force on proton to that on α - particle is

Solution:
QUESTION: 4

An electron and a proton have same de-Broglie's wavelength. The kinetic energy of an electron is

Solution:
QUESTION: 5

The angular speed of an engine wheel making 90 revolutions per minute is

Solution:

Number of revolution n=90 per minute . one revolution=2 π ; ∴ angular displacement=90 × 2π ; Angular velocity=angular displacement / time ; Angular velocity=90 × 2π / 60 Angular velocity=3 × π rad/ sec

QUESTION: 6

A cell of internal resistance 1.5Ω and of e.m.f. 1.5 volt balances 500 cm on a potentiometer wire. If a wire of 1.5 Ω is connected between the balance point and the cell, then the balance point will shift

Solution:
QUESTION: 7

Three resistances of one ohm each are connected in parallel. Such connection is again connected with 2/3Ω resistor in series. The resultant resistance will be

Solution:
QUESTION: 8

The maximum wavelength of a beam of light can be used to produce photo electric effect on a metal is 250 nm. The energy of the electrons in Joule emitted from the surface of the metal when a beam of light of wavelength 200 nm is used [h = 6.6 x 10 − 34 J − sec ; c = 3 x 10 8 ms − 1 ]

Solution:

When λ is expressed in A° then, W = 12400/λ

W = 1240/250 = 4.96eV
h υ = 1240/200 = 6.20eV
K = 6.20 - 4.96 = 1.24eV
= 1.24 x 1.6 x 10-19
= 19.84 x 1.6 x 10-20 J ≅ 19.86 x 10 − 20

QUESTION: 9

Light of wavelength 5000 Å is incident on a metal, whose work-function is 2 eV. The maximum kinetic energy of the photoelectrons would be

Solution:

From photoelectric equation = hc/λ = w0 + 1/2 mv2
1/2 mv2 = hc/λ - w0

QUESTION: 10

If particles are moving with same velocity, then maximum de-Broglie wavelength will be for

Solution:
QUESTION: 11

A coil of n turns and resistance R is connected with a galvanometer of resistance 4 R.. This combination is moved in time t seconds from a magentic flux φ₁ to φ₂. The induced current in the circuit is

Solution:
QUESTION: 12

The energy of a photon of wavelength λ is given

Solution:
QUESTION: 13

Which one of the following electromagnetic radiations have the smallest wavelength?

Solution:
QUESTION: 14

Solution:
QUESTION: 15

Sixty four identical drops each charged by q coulomb to potential V volt coalesce to form a single large drop. The charge and potential on the large drop are respectively

Solution:
QUESTION: 16

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: The situation is shown in adjacent figure, ∴ U = - pE cos 0 = - pE = Minimum
and the net force on the dipole is zero

QUESTION: 17

A mass M is split into two parts, m and M-m, which are then separated by a certain distance. What ratio of m/M maximizes the gravitational force between the two parts

Solution:
QUESTION: 18

In a closed room, heat transfer takes place by

Solution:
QUESTION: 19

If a piston is pushed rapidly into a container of gas, what will happen to the kinetic energy of the molecules of gas and to the temperature of the gas

Solution:
QUESTION: 20

A mass m falls freely from rest. The linear momentum, after it has fallen through height h, is

Solution:

u = 0; since it falls freely from rest
v2 - u2 = 2gh;
v2 = 2gh
v = The linear momentum is given by
p = mv = m QUESTION: 21

A cyclotron oscillator frequency is 10 MHz. If radius of its dees 60 cm, then magnetic field for accelerating the protons is (Given e = 1.6 x 10-19C, mp = 1.67 x 10-27 kg)

Solution:

v = 10 MHz = 10 x106 Hz = 107 Hz
R = rm = 60 cm = 0.6 m
e = 1.6 x 10-19 C
m = 1.67 x 10-27 kg QUESTION: 22

A magnet freely suspended in a vibration magnetometer makes 40 oscillations per minute at a place 'A' and 20 oscillations per minute at a place 'B'. If the horizontal component of earth's magnetic field at 'A' is 36 x 10 − 6 T, then its value at 'B' is

Solution:
QUESTION: 23

Air is streaming over both the aeroplane wings such that its speed is 85 m-s⁻1 over the upper surface and 75 m-s⁻1 at the lower surface. If the wings are 10 m long and have an average width of 2 m, then lift of the wind on aeroplane is (Take density of air = 1.5 kg-m⁻1)

Solution:
QUESTION: 24

A wire of length L and cross-section A is made of material of Young's modulus Y. If it is stretched by an amount x, then work done is

Solution:
QUESTION: 25

The magnetic field strength at a point at a distance 'd' from the centre, on the axial line of a very short bar magnet of magnetic moment 'M' is B. The magnetic induction at a distance'2d' from centre on the equatorial line of a magnet of moment 8M, will be

Solution:
QUESTION: 26

When the nucleus of a radioactive element emits an alpha particle, the atomic number is decreases by

Solution:
QUESTION: 27

During the β -decay,

Solution:
QUESTION: 28

In a Rutherford scattering experiment when a projectile of charge z1 and mass M1 approaches a target nucleus of charge z2 and mass M2, the distance of closest approach is r0. The energy of the projectile is:

Solution:
QUESTION: 29

A convex lens has a focal length f. It is cut into two parts along a line perpendicular to principal axis. The focal length of each part will be

Solution:
QUESTION: 30

If the moment of inertia of a wheel, having radius of gyration 60 cm, is 360 kg-m2, then mass of the wheel is

Solution:
QUESTION: 31

A particle is viberating in a simple harmonic motion with an amplitude of 4 cm. At what displacement from the equilibrium position, is its energy half potential and kinetic ?

Solution:
QUESTION: 32

Which of the following forms a perfect image free from all aberrations?

Solution:
QUESTION: 33

When a sphere of moment of inertia I about an axis through its centre of gravity and mass m rolls down from rest, on an inclined plane without slipping, its kinetic energy is

Solution:
QUESTION: 34

The time period of a simple pendulum is 2sec. If its length is increased by four times period becomes

Solution:
QUESTION: 35

When aluminium is added as an impurity to silicon, then resulting material is

Solution:
QUESTION: 36

Heat given to a body which rises its temperature by 1°C is

Solution:
QUESTION: 37

A current i passes through a wire of length l, radius of cross-section r and density ρ. The rate of heat generation is

Solution:
QUESTION: 38

Suitable impurities are added to a semiconductor depending on its use. This is done to

Solution:
QUESTION: 39

An ideal gas is made to go through a cyclic thermodynamical process in four steps. The amount of heat involved are Q1 = 600 J, Q2 = -400 J, Q3 = -300 J and Q4 = 200 J respectively. The corresponding work involved are W1 = 300 J, W2 = -200 J, W3 = -150 J and W4. What is the value of W4?

Solution:
QUESTION: 40

Whose dimensions is ML2T⁻1

Solution:
QUESTION: 41

A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance 1.21 Å between them. The wavelength of the standing wave is

Solution:
QUESTION: 42

In a sinusoidal wave, the time required for a particular point to move from maximum displacement is 0.5 s. The frequency of wave is

Solution:
QUESTION: 43

If K.E. of a body becomes four times of initial value, then new momentum will

Solution:
QUESTION: 44

Two identical blocks A and B each of mass 'm' resting on smooth floor are connected by a light spring of natural length L and spring constant K, with the spring at its natural length. A third identical block C moving with a speed ν along the line joining A and B collides with A. the maximum compression in the spring is

Solution:
QUESTION: 45

An electric motor exerts a force of 40 N on a cable and pulls it through a distance of 30m in one minute. The power supplied by the motor in watts is

Solution:
QUESTION: 46

The product of the following reaction is Solution: QUESTION: 47

Which of the following does not turn Schiff's reagent to pink ?

Solution:
QUESTION: 48

According to Bohr's theory, the angular momentum of an electron is 5th orbit is

Solution:
QUESTION: 49

Electrophiles are

Solution:
QUESTION: 50

The electronic configuration of an atom/ion can be defined by the following :

Solution:
QUESTION: 51

The alkyl halide is converted into ethyl alcohol by

Solution:
QUESTION: 52

A nucleotide consists of

Solution:
QUESTION: 53

Rancidity of butter is due to the formation of

Solution:
QUESTION: 54

Homolytic fission of C - C bond in ethane (CH₃ - CH₃) gives an intermediate in which carbon atom is

Solution:
QUESTION: 55

Which of the following hydrogen halide has the most polar bond?

Solution:
QUESTION: 56

If a reaction involves only solids and liquids,Which of the following is true ?

Solution:
QUESTION: 57

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

Solution:
QUESTION: 58

Pick out the correct statement __

Solution:
QUESTION: 59

The rate constant of first order reaction whose half life is 480 sec is

Solution:
QUESTION: 60

In which of the following neutralization reaction, the heat of neutralisation will be highest?

Solution:
QUESTION: 61

Which of the following statement is true for ∆G?

Solution:
QUESTION: 62

One of the most widely used drug in medicine iodex in

Solution:
QUESTION: 63

Tautomerism is exhibited by

Solution:
QUESTION: 64

Ligand in a complex salt are

Solution:
QUESTION: 65

Which one of the following complexes is an outer orbital complex?

Solution:

All octahedral complexes of Ni2+ are outer orbital complexes. The electronic configuration of Ni2+ ion (3d8) indicates that two inner d-orbitals can not be made available to allow d2sp3 hybridisation.

QUESTION: 66

The amount of chlorine evolved, when 2 A of current is passed for 30 minutes in an aqueous solution of NaCl will be

Solution: QUESTION: 67

Chlorine cannot displace

Solution:
QUESTION: 68

The unit of equivalent conductivity is

Solution:

If 1 m3 of a solution of an electrolyte placed between two large electrodes 1m apart. The cross-sectional area of the solution will be 1m2.

→ The conductance of solution will evidently be its specific conductance because we have a one-meter cube of the solution.

→ If 1m3 of the solution contains 1 gram equivalent of the electrolyte.

Hence, Conductance(C)=SpecificConductance(K)=EquivalentConductance(∧)

→ As unit of Specific conductance is Sm−1

or Scm−1,so the unit of Equivalent Conductance is

Scm−1

or ohm cm−1

QUESTION: 69

Which of the following is a solid-pollutant?

Solution:
QUESTION: 70

White enamel of our teeth is

Solution:
QUESTION: 71

The difference of water molecules in gypsum and plaster of paris is

Solution:
QUESTION: 72

At higher altitude the boiling point of water lowers because

Solution:
QUESTION: 73

A pseudo solid is

Solution:
QUESTION: 74

The gas molecules have rms velocity of its molecules as 100 m/s. What is its average velocity ?

Solution:
QUESTION: 75

Solution:
QUESTION: 76

Which of the following salts undergoes anionic hydrolysis?

Solution:
QUESTION: 77

BF₃ is an acid according to

Solution:
QUESTION: 78

Which is most basic ?

Solution:
QUESTION: 79

Maximum hyperconjugation is observed in :

Solution:
QUESTION: 80

following step is : Solution:
QUESTION: 81

Plexiglass (PMMA) is a polymer of

Solution:
QUESTION: 82

The best method to separate the mixture of ortho and para nitrophenol (1:1) is

Solution:
QUESTION: 83

For which of the following compounds Lassaigne's test of nitrogen will fail?

Solution:
QUESTION: 84

Which of the following is used for the destruction of colloids?

Solution:
QUESTION: 85

The oxidation number of carbon in CH₂O is

Solution:
QUESTION: 86

Identify the mixture that shows positive deviations from Raoult's law

Solution:
QUESTION: 87

If 20ml of 0.4 N NaOH solution completely neutralise 40ml of a dibasic acid, the molarity of the acid solution

Solution:
QUESTION: 88

How much of NaOH is required to neutralize 1500 cm3 of 0.1 N HCl?

Solution:
QUESTION: 89

The number of moles of KMnO₄ that will be needed to react completely with one mole of ferrous oxalate in acidic solution is

Solution:
QUESTION: 90

Compound that is both paramagnetic and coloured is

Solution:
QUESTION: 91

A component of xylem is

Solution:
QUESTION: 92
Necturus is:
Solution:
QUESTION: 93
Protein and vitamin rich alga is
Solution:
QUESTION: 94
Which part of moss plant bears stomata?
Solution:
QUESTION: 95

In prophase, the chromosomes condense and become shorter and thicker due to

Solution:

Chromosomes become shorter and thicker by coiling themselves (condensation) This prevents tangling with other chromosomes.

QUESTION: 96

A bivalent consists of

Solution:
QUESTION: 97

Smooth endoplasmic reticulum synthesises

Solution:
QUESTION: 98

The latest model for plasma membrane is

Solution:
QUESTION: 99

All tailed bacteriophagic cells contain

Solution:
QUESTION: 100

The female sex organs, in bryophytes are called

Solution:
QUESTION: 101

Erythroblastosis foetalis, also known as hemolytic disease of the newborn, most often occurs in ______________ mothers carrying ______________ fetuses.

Solution:
QUESTION: 102

Water makes up what % of the plasma?

Solution:
QUESTION: 103

If BB represents barr body and Y₀ Y-body, XXY or Klinefelters syndrome has

Solution:
QUESTION: 104

Which blood components transport most of the gases?

Solution:
QUESTION: 105

Twenty third pair of human chromosomes are known as

Solution:
QUESTION: 106

Which of these factors will increase the RBC or RCC?

Solution:
QUESTION: 107

Each of the following statements about Brunner's glands is correct except:

Solution:
QUESTION: 108

Human population follows :

Solution:
QUESTION: 109

Copper-T prevents:

Solution:
QUESTION: 110

Upper part of Sea/aquatic ecosystem contains

Solution:
QUESTION: 111

Amniocentesis is a process to :

Solution:
QUESTION: 112

The presence of large numbers of mitochondria in the cells lining the small intestine allows it to

Solution:
QUESTION: 113

Which of the following disease results from endocrine disorder ?

Solution:
QUESTION: 114

Function of ACTH is to

Solution:
QUESTION: 115

The part of the earth and atmosphere supporting life is

Solution:
QUESTION: 116

Apoenzyme is

Solution:
QUESTION: 117

Feedback inhibition of enzyme is influenced by

Solution:
QUESTION: 118

Which of the following was the transitional stage between apes and humans?

Solution:
QUESTION: 119

The vestibular apparatus consists of the

Solution:
QUESTION: 120

Two individuals with similar external appearance but different genetic make up have the similar

Solution:
QUESTION: 121

Frequency of a perfect heterozygous cross between AABBCC x AaBbCc is

Solution:
QUESTION: 122

Vessels are found in

Solution:
QUESTION: 123

How much time is generally required / taken by the pine plant from pollination to fertilization-

Solution:
QUESTION: 124

Polymorphism is mainly due to

Solution:
QUESTION: 125

Binding of antigen to antibody is through

Solution:
QUESTION: 126

Glycoproteins formed in response to viral infections are

Solution:
QUESTION: 127

AIDS is caused by

Solution:
QUESTION: 128

Zoochlorellae and Zooxanthallae present in Hydra are

Solution:
QUESTION: 129

A gregarious but nonsocial animal is

Solution:
QUESTION: 130

Which immunoglobin is the largest in size

Solution:
QUESTION: 131

Respiratory enzymes of aerobic bacteria are mainly located in

Solution:
QUESTION: 132

Which of the following is a micro-nutrient or a trace element

Solution:
QUESTION: 133

Sexual reproduction does not occur in

Solution:
QUESTION: 134

Lecthin is

Solution:
QUESTION: 135

Most of the plants obtain nitrogen from the soil in the form of

Solution:
QUESTION: 136

In which of the following afflatoxin was first discovered ?

Solution:
QUESTION: 137

Minerals are absorbed in the form of

Solution:
QUESTION: 138

In Cockroach enzyme cellulase is produced by

Solution:
QUESTION: 139

In cockroach, the structure which is not associated with mouthparts is

Solution:
QUESTION: 140

The largest flower in the world is that of

Solution:
QUESTION: 141

Chloragogen cells of Earthworm take part in

Solution:
QUESTION: 142

In Pheretima, septa are absent between which segments?

Solution:
QUESTION: 143

Identify the correctly matched pair of leaf

Solution:
QUESTION: 144

In mammals, corpus callosum connects

Solution:
QUESTION: 145

Piliferous layer is of

Solution:
QUESTION: 146

Least porous soil is

Solution:
QUESTION: 147

Physical and chemical conditions of soil are studied under

Solution:
QUESTION: 148

Solution:
QUESTION: 149

Agriculture was originated in mesolithic age about

Solution:
QUESTION: 150

Solution:
QUESTION: 151

Electrically induced vibrations in the crystals of lead zirconate are utilised in the

Solution:
QUESTION: 152

Pasteurisation is a process that is undertaken to

Solution:
QUESTION: 153

At present, the Dipnoans are distributed over :

Solution:
QUESTION: 154

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

Solution:
QUESTION: 155

All steroids have the same core structure that consists of

Solution:
QUESTION: 156

Monoclonal antibodies are produced by

Solution:
QUESTION: 157

Bicollateral bundles occur in the stem of

Solution:
QUESTION: 158

Rod-shaped elongated thick-walled lignified dead cells found in seed coat of pulses (legumes) are

Solution:
QUESTION: 159

Monoclonal antibodies are

Solution:
QUESTION: 160

Spiral cleavage is observed in

Solution:
QUESTION: 161

The most important source of soil pollution of soil is

Solution:
QUESTION: 162

A storage protein is

Solution:
QUESTION: 163

The sum total of the populations of the same kind of organisms constitute

Solution:
QUESTION: 164

Allethrin is

Solution:
QUESTION: 165

The primary succession refers to the development of communities on a

Solution:
QUESTION: 166

Entry of sewage in water caused a spurt in the growth of algae but killed fish due to

Solution:
QUESTION: 167

Anemophily means

Solution:
QUESTION: 168

The most common type of embryo sac is

Solution:
QUESTION: 169

Testosterone in the adult male is produced by the

Solution:
QUESTION: 170

Lever mechanism or turn pipe mechanism of pollination is found in

Solution:
QUESTION: 171

The edible part of cauliflower is

Solution:
QUESTION: 172

Low levels of estrogen and progesterone in the blood will result in

Solution:
QUESTION: 173

The male homologue of the female clitoris is the

Solution:
QUESTION: 174

Famous publication "Species Plantarum" was written by-

Solution:
QUESTION: 175

When sperm is ejaculated, it comes into contact with or passes near each of the following structures. Which sequence correctly describes the passage of sperm out of the body?

Solution:
QUESTION: 176

The process that moves glucose from the proximal convoluted tubule into the peritubular capillaries is

Solution:
QUESTION: 177

Bentham and Hooker classified dicots into-

Solution:
QUESTION: 178

The source of antidiuretic hormone (ADH) is the

Solution:
QUESTION: 179