NEET Mock Test - 18 (15-04-2020)


180 Questions MCQ Test NEET Mock Test Series 2020 & Past Year Papers | NEET Mock Test - 18 (15-04-2020)


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This mock test of NEET Mock Test - 18 (15-04-2020) for NEET helps you for every NEET entrance exam. This contains 180 Multiple Choice Questions for NEET NEET Mock Test - 18 (15-04-2020) (mcq) to study with solutions a complete question bank. The solved questions answers in this NEET Mock Test - 18 (15-04-2020) quiz give you a good mix of easy questions and tough questions. NEET students definitely take this NEET Mock Test - 18 (15-04-2020) exercise for a better result in the exam. You can find other NEET Mock Test - 18 (15-04-2020) extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

In LR-circuit, the value of impedance is 50Ω and the resistance is 25 Ω. The value of power factor of the circuit is

Solution:
QUESTION: 2

Fraunhofer spectrum is a

Solution:
QUESTION: 3

An X - ray tube is operated at a constant potential difference and it is required to get X - ray of wavelength not less then 0.2 nano-metres. Then the potential difference in kilo-volts is [h = 6.63 x 10−34 J-sec ; e = 1.6 x 10−19 C ; c = 3 x 108 ms−1]

Solution:
QUESTION: 4

A particle of mass m moves with constant speed along a circular path of radius r under the action of force F. Its speed is

Solution:
QUESTION: 5

Two wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be

Solution:
QUESTION: 6

The potential difference between the terminals of a cell in open circuit is 2.2 volts. With resistance of 5 ohm across the terminals of a cell, the terminal potential difference is 1.8 volt. The internal resistance of the cell is

Solution: I=1.8/5=0.36
2.2=i(r+R)
2.2=0.36r+1.8
r=0.4/0.36=10/9ans
option A
QUESTION: 7

The image of the sun is formed on the photosensitive metal with a convex lens and the photoelectric current is I . If the lens is replaced by another similar lens of half the diameter and double the focal length, then photoelectric current will be

Solution:
QUESTION: 8

An electron of charge 'e' coulomb passes through a potential difference of V volts. Its energy in 'joules' will be

Solution:
QUESTION: 9

In photo electric effect the stopping potential is

Solution:

In the photoelectric effect is that the stopping potential is a function of the frequency of the incident light. As shown in Figure, there is even a cutoff frequency ν0 below which there is no photoelectric effect occurs, regardless of the intensity of the light.

A plot of stopping potential vs. frequency of incident light (Cathode: Sodium ; Cutoff frequency νo =4.39x 1014 Hz
Hence option (A) is correct.

QUESTION: 10

The energy of a photon of light with wavelength 5000Å is approximately 2.5eV. This way the energy of an X-ray photon with wavelength 1Å would be

Solution:
QUESTION: 11

During X-ray formation if voltage is increased

Solution:
QUESTION: 12

A bar magnet is released into a copper ring which is directly below it. What about the acceleration of the magnet?

Solution:
QUESTION: 13

The pressure exerted by an electromegnetic wave of intensity I on a non-reflecting surface is (where c = Velocity of light)

Solution:
QUESTION: 14

Heat radiations propagate with the speed of

Solution:
QUESTION: 15

The capacity of a condenser with two identical plates separated by a distance 'd' in air is 'C'. If the distance of separation is reduced to d/2 , the capacity is

Solution:
QUESTION: 16

If the distance between the plates of a parallel plate condenser is halved and the dielectric is doubled, then its capacity increases by

Solution:
QUESTION: 17

Which of the following is the example of ideal black body

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QUESTION: 18

The value of g on the moon is 1/6th that on earth. A body weighing 60 kg on the earth, has weight on the moon

Solution:
QUESTION: 19

The factor not needed to calculate heat lost or gained when there is no change of state, is

Solution:
QUESTION: 20

A cyclist moving with a speed of 4.9 m−s⁻1 on a level road can take a sharp circular turn. The coefficient of friction between the cycle tyres and road is 0.5, then radius of the turn is

Solution:
QUESTION: 21

Relative permittivity and permeability of a material are ℇr and μr , respectively . Which of the following values of these quantities are allowed for a diamagnetic material ?

Solution:
QUESTION: 22

A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction in such a way that its axis makes an angle of . The magnetic flux linked with the disc is

Solution:
QUESTION: 23

Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show

Solution:
QUESTION: 24

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: 25

The radio - isotope of this element is used in the treatment of cancer

Solution:
QUESTION: 26

A capillary tube (A) is dipped in water . Another identical tube (B) is dipped in a soap water solution . Which of the following shows the relative nature of the liquid columns in two tubes ?

Solution:
QUESTION: 27

In a nuclear reactor the excess reactivity can be controlled by using ---- rods

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QUESTION: 28

When two deuterium nuclei fuse together, in addition to tritium, we get a

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QUESTION: 29

Time period of a simple pendulum of length l is T1 and time period of a uniform rod of the same length l pivoted about one end and oscillating in a vertical plane is T2. Amplitude of oscillations in both the cases is small. Then T1/T2 is

Solution:
QUESTION: 30

With respect to air, critical angle in a medium for light of red colour [λ₁] is θ. Other facts remaining same, critical angle for light of yellow colour [λ₂] will be

Solution:
QUESTION: 31

In an experiment to determine the focal length (f) of a concave mirror by the u–v method, a student places the object pin A on the principal axis at a distance x from the pole P. The student looks at the pin and its inverted image from a distance keeping his/her eye in line with PA. When the student shifts his/her eye towards left, the image appears to the right of the object pin. Then,

Solution:
QUESTION: 32

The moment of inertia of a cylinder of radius R, length l and mass M about an axis passing through its centre of mass and normal to its length, is

Solution:
QUESTION: 33

A spherical ball rolls on a table without slipping. Then the fraction of its total energy associated with rotation is

Solution:
QUESTION: 34

A particle starts S.H.M. from the mean position. Its amplitude is A and time period is T. At the time when its speed is half of the maximum speed, its displacement y is

Solution:
QUESTION: 35

A semiconductor is cooled from T₁K to T₂K. Its resistance

Solution:
QUESTION: 36

The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the

Solution:
QUESTION: 37

Two wires have resistance of 2Ω and 4Ω connected to same voltage, ratio of heat dissipated at resistance is

Solution:
QUESTION: 38

If m is the mass, θ is temp. and 's' is specific heat, then thermal capacity k is given by

Solution:
QUESTION: 39

The dimensional formula for impulse is

Solution:
QUESTION: 40

The work done in an adiabatic change in a gas depends only on

Solution:
QUESTION: 41

A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is

Solution:
QUESTION: 42

A source and a listener are moving towards each other with a speed 1/10th of the speed of sound. if the frequency of the note emitted by the source is f, the frequency of the note heard by the listner will be nearly

Solution:
QUESTION: 43

Two bodies with kinetic energies in ratio of 4 : 1 are moving with equal linear momentum. The ratio of their masses is

Solution:
QUESTION: 44

The change of momentum in each ball of mass 60 gm, moving in opposite directions with speeds 4 m/s collides and rebounds with the same speed is

Solution:
QUESTION: 45

An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?

Solution:
QUESTION: 46

Which of the following cannot be made by using Williamson's synthesis?

Solution:
QUESTION: 47

Which of the following reactions is used for detecting presence of carbonyl group ?

Solution:
QUESTION: 48

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

Solution:
QUESTION: 49

Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the

Solution:

Sodium ions after absorbing heat energy from the bunsen flame emit excess energy in the form of yellow light in the visible region

QUESTION: 50

Which of the following compound acts both nucleophile as well as an electrophile?

Solution:
QUESTION: 51

Electrophiles are

Solution:
QUESTION: 52

Isoelectric point is the pH at which

Solution:
QUESTION: 53

Oxidation of toluene to benzaldehyde by the use of chromyl chloride is called

Solution:
QUESTION: 54

In CCl₄, the four valencies of carbon are directed towards the corners of a

Solution:
QUESTION: 55

The no. and types of bonds between two carbon atoms in calcium carbide are

Solution:
QUESTION: 56

The rate, at which a substance reacts at constant temperature, depends upon its

Solution:
QUESTION: 57

The standard molar heat of formation of ethane ,CO₂ and water (l) are respectively -21.0,-94.1 and -68.3 Kcal mol⁻1. The standard molar heat of combustion of ethane will be

Solution:
QUESTION: 58

The law formulated by Nernst is

Solution:
QUESTION: 59

If reaction between A and B to give C shows first order kinetics in A and second order in B, the rate equation can be written as

Solution:
QUESTION: 60

Plants and living beings are the examples of

Solution:
QUESTION: 61

Which one of the following is an example of exothermic reaction?

Solution:
QUESTION: 62

Which of the following molecules will be optically active ?

Solution:
QUESTION: 63

Acetoxybenzoic acid is

Solution:
QUESTION: 64

In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is mainly due to the formation of

Solution:
QUESTION: 65

The co-ordination number and oxidation number of X in [XSO₄(NH₃)₅]Cl is

Solution:
QUESTION: 66

In the cell, Zn | Zn2⁺ ∥ Cu2⁺ | Cu, the negative terminal is

Solution:
QUESTION: 67

In the reaction: Ag₂O + H₂O₂ → 2Ag + H₂O + O₂, the H₂O₂ acts as

Solution:
QUESTION: 68

Aluminium displaces hydrogen from acids,but copper does not. A galvanic cell prepared by combining Cu/Cu2⁺ and Al/Al3⁺ has an EMF of 2.0 V at 298 K. If the potential of copper electrode is + 0.34 V,that of aluminium electrode is

Solution:
QUESTION: 69

Formula of Plaster of Paris is

Solution:
QUESTION: 70

Positive pollution of soil is due to

Solution:
QUESTION: 71

The chemical formula of gypsum is

Solution:
QUESTION: 72

50 ml of hyffuses out through a small hole from a vessel in 20 minutes, time needed for 40 ml of oxygen to diffuse out is

Solution:
QUESTION: 73

A gas is initially at 1 atm pressure. To compress it to 1/4 th of its initial volume, pressure to be applied is

Solution:
QUESTION: 74

Which of the following statement is correct with respect to the property of elements with increase in atomic number in the carbon family(group 14)?

Solution:
QUESTION: 75

A white salt is readily soluble in water and gives a colourless solutions with a pH of about 9.The salt would be

Solution:
QUESTION: 76

Which of the following halogens exhibit only one oxidation state in its compounds?

Solution:
QUESTION: 77

The pH of blood is

Solution:
QUESTION: 78

Arrange the following :
CH₃NH₂(I);
(CH₃)₂NH(II);
C₆H₅NH₂(III) and
(CH₃)₃N(IV) in increasing order of basicity in aqueous medium

Solution:
QUESTION: 79

Identify the compound out of the following in which complete delocalisation of π − electrons does not take place?

Solution:
QUESTION: 80

Which gives more stable product ?

Solution:
QUESTION: 81

The raw material used in making nylon-66 is

Solution:
QUESTION: 82

If nitrogen and sulphur both are present in an organic compound, then during the Lassaigne's test, both will change into

Solution:
QUESTION: 83

Steam distillation is used for the purification of

Solution:
QUESTION: 84

The oxidation number of Ni in Ni(CO)₄ is

Solution:
QUESTION: 85

A 1% aqueous solution (mass by volume) of a certain substance is isotonic with a 3% solution of dextrose, i.e. glucose (molar mass 180) at a given temperature. The molar mass of the substance is

Solution:
QUESTION: 86

A 500 g tooth paste sample has 0.2 g fluoride concentration. What is the concentration of F in terms of PPm level ?

Solution:
QUESTION: 87

Isotonic solutions at a particular temperature have the same

Solution:
QUESTION: 88

The concentration of electrolyte required to coagulate a given amount of As₂S₃ solution is minimum in case of

Solution:
QUESTION: 89

How many 'd' electrons are present in Cr2⁺ ion ?

Solution:
QUESTION: 90

Transition metals are often paramagnetic owing to

Solution:
QUESTION: 91

Fern prothallus is

Solution:
QUESTION: 92

Brachymeiois consists of

Solution:
QUESTION: 93

Apophysis is

Solution:
QUESTION: 94

When moss spores germinate they form

Solution:
QUESTION: 95

Well developed pith is found in

Solution:
QUESTION: 96

Stages in proper sequence of prophase I are

Solution:
QUESTION: 97

Structure present in man but absent in frog is

Solution:
QUESTION: 98

Presence of recessive trait is 16%. The frequency of dominant allele in population is

Solution: Recessive trait(q^2)=16%=16/100. I.e., recessive allele (q)=4/10=0.4. we know , p+q=1. here,p is dominant allele = 1-q=1-0.4=0.6....
QUESTION: 99

The diameter of mitochondria is

Solution:
QUESTION: 100

Correct sequence of protein(P) an lipid (L) in cell membrance is

Solution:
QUESTION: 101

Which of the following might trigger erythropoiesis?

Solution:
QUESTION: 102

Living cells can be studied by

Solution:
QUESTION: 103

Daughter of a colourblind father and normal mother marries a colourblind person. The family will have colourblindness in

Solution:
QUESTION: 104

Which of these can dissolve a blood clot?

Solution:
QUESTION: 105

The first case of IVF-ET technique success, was reported by :

Solution:
QUESTION: 106

Causative agent of syphilis is :

Solution:
QUESTION: 107

Cryptorchidism is a condition in which

Solution:
QUESTION: 108

Which of the follthese can dissolve a blood erobic?

Solution:
QUESTION: 109

Neutrophils promote adhesion of neutrophils to endothelium, attract other neutrophils, monocytes and eosinophils and dilate capillaries by secreting

Solution:
QUESTION: 110

Food is directed towards caecum and colon accordingly at the point

Solution:
QUESTION: 111

Great Barrier Reef along east coast of Australia is a

Solution:
QUESTION: 112

Which of the following are liver waste products?

Solution:
QUESTION: 113

Pyramid of numbers in a grassland/true ecosystem is

Solution:
QUESTION: 114

During menstruation the level of progesterone in the blood is

Solution:
QUESTION: 115

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

Solution:
QUESTION: 116

Specificity of protein in enzyme action depends upon

Solution:
QUESTION: 117

In Medelian genetics one of the following character is the dominant

Solution:
QUESTION: 118

Which of the following came after Dryopithecus during the evolution of man?

Solution:
QUESTION: 119

Energy released from enzyme-substrate interaction is

Solution:
QUESTION: 120

Megasporophylls which are arranged spirally and acropetaly on the central axis of the female cone of Pinus bear -

Solution:
QUESTION: 121

Which of the following plant produces seeds but not flowers ?

Solution:
QUESTION: 122

Source of mendelian recombinations is

Solution:
QUESTION: 123

Blood group AB has

Solution:
QUESTION: 124

Sequence of eye covering (outer to inner) is

Solution:
QUESTION: 125

Antibody formation and immunity production by globulin protein is found in

Solution:
QUESTION: 126

Who discovered vaccine against small pox?

Solution:
QUESTION: 127

Monohybrid cross involves individuals :

Solution:
QUESTION: 128

Bacteria differ from viruses in

Solution:
QUESTION: 129

A number of organic compounds can be decomposed by

Solution:
QUESTION: 130

In fishes the kidney is

Solution:
QUESTION: 131

Which is wrong

Solution:
QUESTION: 132

Which is connecting link?

Solution:
QUESTION: 133

Which is involved in body defence?

Solution:
QUESTION: 134

Role of inorganic nutrients in plant growth and metabolism was first discovered by

Solution:
QUESTION: 135

Hill reaction occurs in

Solution:
QUESTION: 136

The number of ovarioles in each ovary of cockroach is

Solution:
QUESTION: 137

Brown heart disease is due to deficiency of

Solution:
QUESTION: 138

Basic unit in the eye of Cockroach is

Solution:
QUESTION: 139

Unsaturated fats are made saturated by

Solution:
QUESTION: 140

Blood vascular system of earthworm is

Solution:
QUESTION: 141

At maturity, which of the following is non-nucleated ?

Solution:
QUESTION: 142

Plants with soft stem are called

Solution:
QUESTION: 143

Resin canals are

Solution:
QUESTION: 144

In Pheretima, septa are absent between which segments?

Solution:
QUESTION: 145

Secondary phloem remains functional generally

Solution:
QUESTION: 146

Bony plates alongwith scales is characteristic of

Solution:
QUESTION: 147

Mycorrhiza acts as

Solution:
QUESTION: 148

Animals loving darkness are

Solution:
QUESTION: 149

Submerged hydrophytes exchange gases through

Solution:
QUESTION: 150

Which of the following cranial nerves innervates heart, stomach and lungs?

Solution:
QUESTION: 151

Transgenic crops are useful as they have genes of

Solution:
QUESTION: 152

Conversion of nitrites into nitrates is carried out by

Solution:
QUESTION: 153

The chemical knives (scissors) used in genetic engineering is

Solution:
QUESTION: 154

Advancement in genetic engineering has been possible due to discovery of

Solution:
QUESTION: 155

Which of the following crops have been brought to India from new world?

Solution:
QUESTION: 156

Glucose fermentation by yeast yields

Solution:
QUESTION: 157

H.G.Khorana was awarded the Nobel prize for

Solution:
QUESTION: 158

Intermediate host of Liver Fluke is

Solution:
QUESTION: 159

Hard lignified thick-walled long and pointed cells constitute

Solution:
QUESTION: 160

The most harmful environmental pollutants are

Solution:
QUESTION: 161

Automobile exhaust gas that causes major respiratory problem is

Solution:
QUESTION: 162

Green house effect was first described by

Solution:
QUESTION: 163

Vascular bundles in the stem of Cucurbita or Lagenaria or cucurbitaceae are

Solution:
QUESTION: 164

A parasite living within tissue of host is

Solution:
QUESTION: 165

if pollen of a flower falls on the stigma of anther flower, belonging to the same plant, it is called

Solution:
QUESTION: 166

Insulin (bovine) has 51 amino acids in A and B polypeptides. The polypeptide A possesses amino acids

Solution:
QUESTION: 167

Plants of edible banana are propagated by

Solution:
QUESTION: 168

The egg apparatus in a nature embrayo sac consists of

Solution:
QUESTION: 169

The term succession was coined by

Solution:
QUESTION: 170

Cryptorchidism is a condition in which testes are

Solution:

Cryptorchidism is a congenital disorder when one or both of a newborn's testicles fail to descend into the scrotum. Although this condition may occur on both sides, it more commonly affects the right testis. Because the testicles normally descend into the scrotum during the eighth month of gestation, undescended testicles most commonly affect newborns

QUESTION: 171

When mammary glands of male develop similar to female, the condition is known as

Solution:
QUESTION: 172

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: 173

Pollen grain is related to embryo sac as

Solution:
QUESTION: 174
Lutein cells are found in
Solution: The cells of the corpus luteum which are derived from the granulosa cells and the theca cells of the graafian follicle
QUESTION: 175

The families having common characters constitute an -

Solution:
QUESTION: 176

Axile placentation is found in-

Solution:
QUESTION: 177

The part of the nephron having the greatest glucose concentration is the

Solution:
QUESTION: 178

High blood pressure can be the result of

Solution:
QUESTION: 179

If the blood becomes acidic, the kidneys will maintain homeostasis by actively excreting

Solution:
QUESTION: 180

The excretory system regulates the amount of bicarbonate ion (HCO3) in the blood in order to maintain homeostatic levels of

Solution:

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