NEET Mock Test - 7 (28-02-2020)


180 Questions MCQ Test NEET Mock Test Series 2020 & Past Year Papers | NEET Mock Test - 7 (28-02-2020)


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This mock test of NEET Mock Test - 7 (28-02-2020) for NEET helps you for every NEET entrance exam. This contains 180 Multiple Choice Questions for NEET NEET Mock Test - 7 (28-02-2020) (mcq) to study with solutions a complete question bank. The solved questions answers in this NEET Mock Test - 7 (28-02-2020) quiz give you a good mix of easy questions and tough questions. NEET students definitely take this NEET Mock Test - 7 (28-02-2020) exercise for a better result in the exam. You can find other NEET Mock Test - 7 (28-02-2020) extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

The alternating voltage induced in the secondary coil of a transformer is mainly due to

Solution:

A varying magnetic field produces an emf which is the underlying principle of transformers.

QUESTION: 2

Photons of energy 1eV and 2.5 eV successively illuminate a metal whose work function is 0.5 eV. The ratio of the maximum speeds of the electrons emitted will be

Solution:
QUESTION: 3

What is the de Broglie wavelength (in Å) of the alpha- particle accelerated through a potential difference V ?

Solution:
QUESTION: 4

A stationary nucleus of mass M emits an electron of mass 'm' with a velocity 'v'. If the recoil velocity of the nucleus is V, the ratio of the de Broglie wave lengths of the nucleus and the electron is

Solution:
QUESTION: 5

Drift velocity is equal to

Solution:
QUESTION: 6

A body of mass m is moving in a circle of radius r with a constant speed υ. The force on the body is mυ2/r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle

Solution:
QUESTION: 7

An electron beam is subjected to perpendicular electric and magnetic fields of 5 x 10 − 4 w b m − 2 and 3 x 10 3 V m − 1 resectively. If there is no deflection, the velocity of electrons is

Solution:
QUESTION: 8

In a Wheatstone's bridge, all the four arms have equal resistance R. If resistance of the galvanometer arm is also R, then equivalent resistance of the combination is

Solution:
QUESTION: 9

A photoelectric cell is illuminated by a point source of light 1 m away. When the source is shifted to 2 m, then

Solution:
QUESTION: 10

When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then

Solution:
QUESTION: 11

For a given kinetic energy which of the following has the smallest de-Broglie wave-length ?

Solution:
QUESTION: 12

The effective value of a.c. in a circuit is 10 A. The peak value of current is

Solution:
QUESTION: 13

When light travels from air to water, which parameter does not change?

Solution:
QUESTION: 14

In an electromagnetic wave, the electric and magnetising fields are 100 Vm-1 and 0.265 Am-1. The maximum energy flow is

Solution:

S = E0 x H0
E0 = 100 Vm-1, H0 = 0.265 Am-1
∴ S = 100 x 0.26 = 26.5 Wm-2

QUESTION: 15

Three point charges -q, Q and -q are placed at equal distances on a straight line. If total potential energy of the system is zero, then the ratio of Q/q is

Solution:
QUESTION: 16

Figure shows a solid hemisphere with a charge of 5nC distributed uniformly through its volume. The hemisphere lies on a plane and point P is located on the plane, along a radial line from the centre of curvature at distance 15cm. The electric potential at point P due to the hemisphere is:

Solution:
QUESTION: 17

Two sphere of mass m and M are situated in air and the gravitational force between them is F. The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be

Solution:
QUESTION: 18

The specific heats at constant pressure is greater than that of the same gas at constant volume because

Solution:
QUESTION: 19

A body is imparted motion from rest to move in a straight line. If it is then obstructed by an opposing force, then

Solution:
QUESTION: 20

Two parallel wires of length 9m each are separated by a distance of 0.15m. If they carry equal currents in the same direction and exert a total force of 30 x 10 − 7 N on each other, the value of current must be

Solution:
QUESTION: 21

A body takes T minutes to cool from 62°C to 61°C when the surrounding temperature is 30°C. The time taken by the body to cool from 46°C to 45.5°C is

Solution:

According to Newton's law of cooling,


QUESTION: 22

A vibration magnetometer is placed at South pole, then the time period will be

Solution:
QUESTION: 23

Which of the following materials is repelled by an external magnetic field?

Solution:
QUESTION: 24

If the radius of a soap bubble is four times that of another, then the ratio of their pressures will be

Solution:
QUESTION: 25

The extension in a string, obeying the Hooke's law, is x. The speed of sound in the stretched string is v. If the string is extended to 1.5 x, then speed of sound will be

Solution:

Speed of sound in a stretched string

Where T is the tension in the string and μ is mass per unit length
According to Hooke's law, F ∝ x

QUESTION: 26

If 200 Mev energy is released in the fission of a single nucleus of 92U235 , how many fissions must occur per second to produce a power of 1 kW?

Solution:
QUESTION: 27

The source of stellar energy is

Solution:
QUESTION: 28

A simple pendulum of length 'l' has a maximum angular displacement (θ). The energy of a bob of mass m at the end of the displacement is

Solution:
QUESTION: 29

In a Huygen's eye piece with an eyepiece of focal length F, the distance between the eye-piece and field lens should be

Solution:
QUESTION: 30

Rainbow is formed due to a combination of

Solution:
QUESTION: 31

If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly lowers his hands

Solution:
QUESTION: 32

A body A of mass M while falling vertically downwards under gravity breaks into two parts, a part B of mass M/3 and body C of mass 2M/3. The centre of mass of the bodies B and C taken together

Solution:

No horizontal external force is acting
∴ acm = 0
since vcm = 0
∴ Δxcm = 0

QUESTION: 33

The half life of a radioactive material depends on

Solution:
QUESTION: 34

For a simple pendulum the graph between L and T will be

Solution:
QUESTION: 35

The band gap in Germanium and silicon in eV respectively is

Solution:
QUESTION: 36

In case of a semiconductor which of the following statement is wrong

Solution:
QUESTION: 37

Two 220 V, 100 W bulbs are connected first in series and then in parallel. Each time the combination is connected to 220 V ac supply line. The power drawn by the combination in each case respectively will be

Solution:
QUESTION: 38

When the temp. of a gas filled in a closed vessel is increased by 1°C, its pressure increases by 0.4 percent. the initial temperature of gas was

Solution:
QUESTION: 39

The physical quantities not having same dimensions are

Solution:
QUESTION: 40

A transverse wave is represented by the equation y = γ₀ sin 2 π/λ (V t - x) for what value of λ is the maximum particle velocity equal to two times the wave velocity?

Solution:
QUESTION: 41

Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between road and tyres is 0.5, the shortest distance in which the car can be stopped is

Solution:
QUESTION: 42

19g of water at 30°C and 5g of ice at − 20°C are mixed together in a calorimeter. What is the final temperature of the mixture ? Given specific heat of ice = 0.5 cal g − 1°C − 1 and latent heat of fusion of ice = 0.8 cal g−1

Solution:
QUESTION: 43

The quantities remaining constant in a collision are

Solution:
QUESTION: 44

Two similar sonometer wires given fundamental frequencies of 500 Hz. These have same tensions. By what amount the tension be increased in one wire so that the two wires produce 5 beats/sec

Solution:
QUESTION: 45

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

Solution:
QUESTION: 46

Which of the following has maximum hydrogen bonding?

Solution:
QUESTION: 47

Aldehydes and ketones do not give addition reaction with

Solution:
QUESTION: 48

Which of the following statements regarding spectral series is correct?

Solution:
QUESTION: 49

The relationship between the energy E₁ of the radiation with a wavelength 8000 Å and the energy E₂ of the radiation with a wavelength 16000 Å is

Solution:
QUESTION: 50

Haloalkane in the presence of alcoholic KOH undergoes

Solution:
QUESTION: 51

Which one of the following compounds in most acidic

Solution:
QUESTION: 52

The alcohol obtained by the hydrolysis of oils and fats is

Solution:
QUESTION: 53

In a reaction involving ring substitution of C6H5Y, the major product is meta isomer. The group Y can be

Solution:

Electron withdrawing groups favour meta substitution
- COOH group is metadirecting group

QUESTION: 54

Which of the following is not an amphoteric substance?

Solution:
QUESTION: 55

Which of the following is soluble in water?

Solution:
QUESTION: 56

The law of thermodynamics that provides the basis for the determination of absolute entropy of a substance is

Solution:
QUESTION: 57

The free energy change ΔG = 0,When

Solution:
QUESTION: 58

Which one of the following informations can be obtained on the basis of Le Chatelier principle ?

Solution:
QUESTION: 59

The plot of concentration of the reactant versus time for a reaction is a straight line with a negative slope. The reaction follows a

Solution:
QUESTION: 60

For a reaction to occur spontaneously

Solution:
QUESTION: 61

A Carnot engine, working between 500 K to 300 K has a work output of 800 J-cycle⁻1. What is the amount of heat energy supplied to the engine from the source per cycle?

Solution:
QUESTION: 62

A broad spectrum antibiotic is

Solution:

Chloramphenicol is a broad spectrum antibiotic . It is rapidly absorbed from the gastro intestinal tract.
Pencillin has a narrow spectrum and is effective only against diseases caused by various cocci and some gram positive bacteria.
Aspirin and Paracetamol are non additive analgesics.

QUESTION: 63

IUPAC name of

Solution:
QUESTION: 64

Some salts although containing two different metallic elements give test for only one of them in solution. Such salts are

Solution:
QUESTION: 65

On passing 0.1 faraday of electricity through fused sodium chloride ,the amount of chlorine liberated is (At.mass of Cl = 35.45)

Solution:
QUESTION: 66

The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, is

Solution:
QUESTION: 67

The e.m.f. of a cell prepared by combining Al/Al⁺3 and Ag/Ag⁺ is 2.46 V. The reduction potential of the silver electrode is +0.08 V. The reduction potential of the aluminum electrode is

Solution:
QUESTION: 68

The higher rate of heart disease in smokers is due to

Solution:
QUESTION: 69

In which of the following pairs, both the complexes show optical isomerism? 

Solution:
QUESTION: 70

The product obtained on fusion of BaSO₄ and Na₂CO₃ is

Solution:
QUESTION: 71

Silver is present in

Solution:
QUESTION: 72

A container contains 1 mole of a gas at 1 atm pressure and 27°C, and its volume is 24.6 ltres. If pressure is 10 atm and temperature 327°C, then new volume is approximately

Solution:
QUESTION: 73

3.2 oxygen is diffused in 10 minutes. In similar conditions, 2.8 g nitrogen will diffuse in

Solution:
QUESTION: 74

The shape of gaseous SnCl₂ is

Solution:
QUESTION: 75

Cl₂ gas is dried over

Solution:
QUESTION: 76

If H⁺ ion conc. of a solution is increased by 10 times, its pH will

Solution:
QUESTION: 77

The indicator used in the titration of sodium carbonate with sulphuric acid is

Solution:
QUESTION: 78

Among the following, the weakest base is

Solution:
QUESTION: 79

Which is not the resonance structure of aniline?

Solution:
QUESTION: 80

Polymers have

Solution:
QUESTION: 81

Following carbocation changes to more stable carbocation :

Solution:
QUESTION: 82

The empirical formula of a compound is CH₂. One mole of compound has a mass of 42g, its molecular formula is

Solution:
QUESTION: 83

Which one of the following is not used for the purification of solid impurities?

Solution:
QUESTION: 84

Which of the following is not a reducing agent ?

Solution:
QUESTION: 85

Which of the following will have the highest F.P. at one atm?

Solution:
QUESTION: 86

A solution contains non-volatile solute of molecular mass M₂. which of the following can be used to calculate the molecules mass of solute in terms of osmotic pressure ?

Solution:
QUESTION: 87

Which one of the following is a colligative property?

Solution:
QUESTION: 88

Which of the following is not a property of hydrophilic sols?

Solution:
QUESTION: 89

The aqueous solution of the following salts will be coloured in the case of

Solution:
QUESTION: 90

Iron is extracted from magnetite by reduction with

Solution:
QUESTION: 91

Multicellular brached rhizoids and leafy gametophytes are the characteristics of

Solution:
QUESTION: 92

Frog's kidney is

Solution:
QUESTION: 93

Sugarcane plant has

Solution:
QUESTION: 94

In Funaria the antheridia and archegonia develop on the same plant but on separate branches. Thus Funaria is

Solution:
QUESTION: 95

Part of spindle left after chromosomes have moved to poles is

Solution:
QUESTION: 96

The two chromatids of a metaphase chromosome represent

Solution:
QUESTION: 97

Monosomics are

Solution:
QUESTION: 98

Which one controls movement of substances across cell membrane?

Solution:
QUESTION: 99

The golgi complex participates in

Solution:
QUESTION: 100

A plant cell has potential to develop into full plant. The property is called

Solution:
QUESTION: 101

Genome represents

Solution:
QUESTION: 102

Sunil's blood type was determined to be AB+. Which of the following is true of Sunil's blood?

Solution:
QUESTION: 103

Which blood cell can be described as being a biconcave disc?

Solution:
QUESTION: 104

Which type of condition is directly related to bone marrow suppression?

Solution:
QUESTION: 105

Which lipoprotein has the highest percentage of cholesterol?

Solution:
QUESTION: 106

Causative agent of syphilis is :

Solution:
QUESTION: 107

In IVF technique, fusion of ovum and sperm occurs in :

Solution:
QUESTION: 108

Contraceptive oral pills help in birth control by :

Solution:
QUESTION: 109

Where does complete digestion of protein take place?

Solution:
QUESTION: 110

Digestion is brought about by

Solution:
QUESTION: 111

Number of individuals of a species in a particular ecosystem at a given time remains constant due to

Solution:
QUESTION: 112

Grasslands of Asia are

Solution:
QUESTION: 113

Herring bodies are found in

Solution:
QUESTION: 114

The organ which was considered vestigial till recently but now confirmed to be endocrine gland is

Solution:
QUESTION: 115

The word enzyme was coined by

Solution:
QUESTION: 116

Most abundant enzyme is

Solution:
QUESTION: 117

Chilgoza is the seed of -

Solution:
QUESTION: 118

In gymnosperms, ovules are

Solution:
QUESTION: 119

In E.coli, during lactose metabolism repressor binds to

Solution:
QUESTION: 120

Which one is incorrect

Solution:
QUESTION: 121

Mendel chose contrasting traits in Pea

Solution:
QUESTION: 122

The eye membrane which prevents the reflection of the extra light within the eye, by absorbing it is called

Solution:
QUESTION: 123

Immunity acquired after an infection is

Solution:
QUESTION: 124

AIDS was first reported in

Solution:
QUESTION: 125

An antiviral substance produced in response to viral infection for restricting its multiplication is

Solution:
QUESTION: 126

If Juvenile hormone is absent when silkworm moults. It will

Solution:
QUESTION: 127

Animals devoid of respiratory, excretory and circulatory organs are

Solution:
QUESTION: 128

Lichens are ecologically important as they

Solution:
QUESTION: 129

Bacteria can not survive in a highly salted pickle, because

Solution:
QUESTION: 130

Bacteria can prepare food from

Solution:
QUESTION: 131

Two fatty acid monomers are joined by

Solution:
QUESTION: 132

How many quanta of light are required to evolve one molecule of oxygen in photosynthesis ?

Solution:
QUESTION: 133

In C₄-plants, carbon dioxide combines with

Solution:
QUESTION: 134

NPK denotes

Solution:
QUESTION: 135

Incomplete metamorphosis occurs in

Solution:
QUESTION: 136

A common feature of cockroach and housefly is that both have

Solution:
QUESTION: 137

In Pheretima, haemoglobin is present in

Solution:
QUESTION: 138

The female genital pore of Pheretima posthuma located upon the segment

Solution:
QUESTION: 139

Tunica Corpus theory was proposed by

Solution:
QUESTION: 140

Identify the correctly matched pair

Solution:
QUESTION: 141

Nearest to pod is

Solution:
QUESTION: 142

Transmission across a synapse is one-way because

Solution:
QUESTION: 143

Individuals of a species which occur in a particular area constitute

Solution:
QUESTION: 144

Rhizome is

Solution:
QUESTION: 145

Edaphology is connected with

Solution:
QUESTION: 146

Which is correct pair bony fishes : stronger muscles ::

Solution:
QUESTION: 147

Brewer's yeast lack which of these

Solution:
QUESTION: 148

Transgenic animal has

Solution:
QUESTION: 149

An important example of serendipity is

Solution:
QUESTION: 150

Mycorrhiza is used in

Solution:
QUESTION: 151

Virus free plants can be obtained by

Solution:
QUESTION: 152

Modified antibiotics are manufactured by the technique of

Solution:
QUESTION: 153

Aneuploidy is commonly observed in different varieties of

Solution:
QUESTION: 154

Milk tastes sour when kept in the open for sometime due to formation of

Solution:
QUESTION: 155

Vessel elements differ from other elements of xylem in having

Solution:
QUESTION: 156

Photosynthates are transported through

Solution:
QUESTION: 157

Respiration of Ascaris is

Solution:
QUESTION: 158

Positive pollution of soil is due to

Solution:
QUESTION: 159

DDT has been a major pollutant because it

Solution:
QUESTION: 160

Minamata disease was caused due to the consumption of

Solution:
QUESTION: 161

Hyperparasite is parasite which

Solution:
QUESTION: 162

An association of individuals of different species living in the same habitat and having functional interactions is

Solution:
QUESTION: 163

The constituent of natural silk is

Solution:
QUESTION: 164

Milky water of green coconuts is

Solution:
QUESTION: 165

In albuminous seeds the food is stored in

Solution:
QUESTION: 166

Embryo sac represents

Solution:
QUESTION: 167

Fruits having economically important pulp are propagated vegetatively because

Solution:
QUESTION: 168

Which of the following store sperm cells and eliminate those that have major genetic defects?

Solution:
QUESTION: 169

The corpus luteum is formed at the site of

Solution:
QUESTION: 170

The ovaries

Solution:
QUESTION: 171

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

Solution:
QUESTION: 172

Inferior ovary with cypsella fruits are found in the family-

Solution:
QUESTION: 173

Botanical name of Rai or Indian Mustard is -

Solution:
QUESTION: 174

Pressure filtration occurs at the

Solution:
QUESTION: 175

Which of the following would cause the kidney to produce more concentrated urine?

Solution:
QUESTION: 176

In a healthy person, Bowman’s capsules are found in the renal

Solution:
QUESTION: 177

If the blood is excessively acidic, it will likely lead to urine

Solution:
QUESTION: 178

In moss capsule, dispersal of spore takes place through

Solution:
QUESTION: 179

Who coined the term 'Homo sapiens'?

Solution:
QUESTION: 180

A doctor suggested to a couple not to have more than one child because of

Solution:

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