NEET 2020 Online Mock test

Vishal Kumar 09/01/2021

Contents Find In This Post

NEET 2020 Question Papers E4 Online Mock test With Answers

Introduction :

The National Eligibility cum Entrance Test (NEET) is an all-India medical entrance examination held in India. The exam is conducted by the National Testing Agency (NTA) every year to offer admissions to students in undergraduate medical programs like MBBS, BDS etc. Qualifying the NEET exam has been made obligatory by the Government of India to pursue medical studies in India and abroad.

It is the only medical entrance examination held on an all-India basis and hence attracts a multitude of students. The vast and varied syllabus of the exam coupled with the high level of competition makes NEET one of the toughest entrance exams in the country.

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Take NEET Mock Test here online for free. Mock Test of NEET is an important part of exam preparation. NEET Mock Test by TayariOnline is based on exam syllabus and level of exam. Practice physics, chemistry, zoology, botany of NEET level with online mock test. National Eligibility cum Entrance Test is conducted by National Testing Agency (NTA) for admission to MBBS and BDS.

Created by

Chandra Sain

NEET & JEE

NEET 2020 Code E4 Online Mock test

The National Eligibility cum Entrance Test (NEET) is an all-India medical entrance examination held in India. The exam is conducted by the National Testing Agency (NTA) every year to offer admissions to students in undergraduate medical programs.

Take NEET Mock Test here online for free. Mock Test of NEET is an important part of exam preparation. NEET Mock Test by TayariOnline is based on exam syllabus and level of exam. Practice physics, chemistry, zoology, botany of NEET level with online mock test.

1 / 165

Category: Current Affairs

Secondary metabolites such as nicotine,
strychnine and caffeine are produced by
plants for their

Growth response

Defence action

Nutritive value

Effect on reproduction

2 / 165

Category: NEET & JEE

Which of the following statements is
correct?

Adenine pairs with thymine through two Hbonds

Adenine pairs with thymine through three H-bonds

Adenine pairs with thymine through one Hbond

Adenine does not pair with thymine

3 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

4 / 165

Category: NEET & JEE

Which of the following graph represents the
variation of resistivity (ρ) with temperature (T)
for copper?

5 / 165

Category: NEET & JEE

Urea reacts with water to form A which will
decompose to form B. B when passed through
Cu²+ (aq), deep blue colour solution C is
formed. What is the formula of C from the
following ?

6 / 165

Category: NEET & JEE

Name the enzyme that facilitates opening of
DNA helix during transcription.

RNA polymerase

DNA polymerase

DNA helicase

DNA ligase

7 / 165

Category: NEET & JEE

Which of the following pairs is of unicellular
algae?

Chlorella and Spirulina

Gelidium and Gracilaria

Laminaria and Sargassum

Anabaena and Volvox

8 / 165

Category: NEET & JEE

The infectious stage of Plasmodium that
enters the human body is

Male gametocytes

Trophozoites

Sporozoites

Female gametocytes

9 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

10 / 165

Category: NEET & JEE

The product(s) of reaction catalyzed by
nitrogenase in root nodules of leguminous
plants is/are

Ammonia and oxygen

Ammonia alone

Nitrate alone

Ammonia and hydrogen

11 / 165

Category: NEET & JEE

12 / 165

Category: NEET & JEE

Which of the following is not an attribute of a
population?

Species interaction

Mortality

Sex ratio

Natality

13 / 165

Category: NEET & JEE

Reaction between benzaldehyde and
acetophenone in presence of dilute NaOH is
known as

Aldol condensation

Cannizzaro’s reaction

Cross Cannizzaro’s reaction

Cross Aldol condensation

14 / 165

Category: NEET & JEE

The rate constant for a first order reaction is
4.606 × 10–³ s–¹. The time required to reduce
2.0 g of the reactant to 0.2 g is :

200 s

1000 s

500 s

100 s

15 / 165

Category: NEET & JEE

Presence of which of the following conditions
in urine are indicative of Diabetes Mellitus?

Uremia and Ketonuria

Uremia and Renal Calculi

Renal calculi and Hyperglycaemia

Ketonuria and Glycosuria

16 / 165

Category: NEET & JEE

Identify the basic amino acid from the
following.

Tyrosine

Glutamic Acid

Lysine

Valine

17 / 165

Category: NEET & JEE

An alkene on ozonolysis gives methanal as
one of the product. Its structure is

18 / 165

Category: NEET & JEE

The following metal ion activates many
enzymes, participates in the oxidation of
glucose to produce ATP and with Na, is
responsible for the transmission of nerve
signals.

Potassium

Copper

Calcium

Iron

19 / 165

Category: NEET & JEE

Identify the incorrect statement

Heart wood does not conduct water but gives mechanical support

Due to deposition of tannins, resins, oils etc., heart wood is dark in colour

Sapwood is the innermost secondary xylem and is lighter in colour

Sapwood is involved in conduction of water and minerals from root to leaf

20 / 165

Category: NEET & JEE

A cylinder contains hydrogen gas at pressure
of 249 kPa and temperature 27°C.

21 / 165

Category: NEET & JEE

The capacitance of a parallel plate capacitor
with air as medium is 6 μF. With the
introduction of a dielectric medium, the
capacitance becomes 30 μF. The permittivity of
the medium is :

22 / 165

Category: NEET & JEE

Match the following with respect to meiosis

23 / 165

Category: NEET & JEE

The sequence that controls the copy number
of the linked DNA in the vector, is termed

Palindromic sequence

Recognition site

Ori site

Selectable marker

24 / 165

Category: NEET & JEE

Which of the following hormone levels will
cause release of ovum (ovulation) from the
graffian follicle?

High concentration of Progesterone

Low concentration of FSH

Low concentration of LH

High concentration of Estrogen

25 / 165

Category: NEET & JEE

Select the correct statement.

Glucagon is associated with hypoglycemia.

Insulin acts on pancreatic cells and adipocytes.

Glucocorticoids stimulate gluconeogenesis.

Insulin is associated with hyperglycemia.

26 / 165

Category: NEET & JEE

Meiotic division of the secondary oocyte is
completed

(a) In Ur

At the time of copulation

After zygote formation

Prior to ovulation

At the time of fusion of a sperm with an ovum

27 / 165

Category: NEET & JEE

Identify the substances having glycosidic bond
and peptide bond, respectively in their
structure

Glycerol, trypsin

Chitin, cholesterol

Cellulose, lecithin

Inulin, insulin

28 / 165

Category: NEET & JEE

Dimensions of stress are :

29 / 165

Category: NEET & JEE

On electrolysis of dil. sulphuric acid using
Platinum (Pt) electrode, the product obtained
at anode will be

SO2 gas

Oxygen gas

Hydrogen gas

H2S gas

30 / 165

Category: NEET & JEE

Identify the wrong statement with reference
to immunity.

Foetus receives some antibodies from mother, it is an example for passive immunity.

When ready-made antibodies are directly given, it is called “Passive immunity”.

When exposed to antigen (living or dead) antibodies are produced in the host’s body. It is called “Active immunity”.

Active immunity is quick and gives full response.

31 / 165

Category: NEET & JEE

Which of the following is the correct order of
increasing field strength of ligands to form
coordination compounds?

32 / 165

Category: NEET & JEE

An increase in the concentration of the
reactants of a reaction leads to change in

activation energy

collision frequency

heat of reaction

threshold energy

33 / 165

Category: NEET & JEE

Which of the following set of molecules will
have zero dipole moment?

Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene

Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene

Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene

Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene

34 / 165

Category: NEET & JEE

The transverse section of a plant shows
following anatomical features :

(a) Large number of scattered vascular
bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous
ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part :

Monocotyledonous stem

Monocotyledonous root

Dicotyledonous root

Dicotyledonous stem

35 / 165

Category: NEET & JEE

The number of Faradays(F) required to
produce 20 g of calcium from molten CaCl2
(Atomic mass of Ca = 40 g mol–¹) is

36 / 165

Category: NEET & JEE

Identify a molecule which does not exist

37 / 165

Category: NEET & JEE

In water hyacinth and water lily, pollination
takes place by :

Insects and water

Water currents only

Wind and water

Insects or wind

38 / 165

Category: NEET & JEE

39 / 165

Category: NEET & JEE

Which of the following statements is
not correct?

In man insulin is synthesised as a proinsulin

The functional insulin has A and B chains linked together by hydrogen bonds.

The proinsulin has an extra peptide called C-peptide.

Genetically engineered insulin is produced in E.Coli.

40 / 165

Category: NEET & JEE

What is the change in oxidation number of
carbon in the following reaction?

– 4 to + 4

+ 4 to + 4

0 to + 4

0 to – 4

41 / 165

Category: NEET & JEE

Some dividing cells exit the cell cycle and
enter vegetative inactive stage. This is called
quiescent stage (G0). This process occurs at
the end of

S phase

G1 phase

G2 phase

M phase

42 / 165

Category: NEET & JEE

43 / 165

Category: NEET & JEE

How many true breeding pea plant varieties
did Mendel select as pairs, which were similar
except in one character with contrasting
traits?

44 / 165

Category: NEET & JEE

In light reaction, plastoquinone facilitates the
transfer of electrons from

Cytb6f complex to PS-I

PS-II to Cytb6f complex

PS-I to NADP+

PS-I to ATP synthase

45 / 165

Category: NEET & JEE

Select the correct match

Sickle cell anaemia – Autosomal recessive trait, chromosome-11

Thalassemia – X linked

Phenylketonuria – Autosomal dominant trait

Haemophilia – Y linked

46 / 165

Category: NEET & JEE

In a guitar, two strings A and B made of same
material are slightly out of tune and produce
beats of frequency 6 Hz. When tension in B is
slightly decreased, the beat frequency
increases to 7 Hz. If the frequency of A is
530 Hz, the original frequency of B will be:

537 Hz

524 Hz

523 Hz

536 Hz

47 / 165

Category: NEET & JEE

Match the following concerning essential
elements and their functions in plants

48 / 165

Category: NEET & JEE

Ray florets have

Half inferior ovary

Superior ovary

Hypogynous ovary

Inferior ovary

49 / 165

Category: NEET & JEE

The ratio of contributions made by the electric
field and magnetic field components to the
intensity of an electromagnetic wave is :
(c = speed of electromagnetic waves)

1 : c²

1 : c

c : 1

1 : 1

50 / 165

Category: NEET & JEE

Match the following diseases with the
causative organism and select the correct
option.

51 / 165

Category: NEET & JEE

Which of the following statements are true for
the phylum-Chordata?
(a) In Urochordata notochord extends from
head to tail and it is present throughout
their life.
(b) In Vertebrata notochord is present during
the embryonic period only.
(c) Central nervous system is dorsal and
hollow.
(d) Chordata is divided into 3 subphyla :
Hemichordata, Tunicata and
Cephalochordata.

(a) and (b)

(b) and (c)

(d) and (c)

52 / 165

Category: NEET & JEE

Which of the following statements about
inclusion bodies is incorrect?

These are involved in ingestion of food particles

These represent reserve material in cytoplasm

They are not bound by any membrane

They lie free in the cytoplasm

53 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

54 / 165

Category: NEET & JEE

A ball is thrown vertically downward with a
velocity of 20 m/s from the top of a tower. It hits
the ground after some time with a velocity of
80 m/s. The height of the tower is : (g = 10 m/s²)

340 m

320 m

300 m

360 m

55 / 165

Category: NEET & JEE

Bt cotton variety that was developed by the
introduction of toxin gene of Bacillus
thuringiensis (Bt) is resistant to

Plant nematodes

Insect pests

Fungal diseases

Insect predators

56 / 165

Category: NEET & JEE

Which of the following is correct about
viroids?

They have free RNA without protein coat

They have RNA with protein coat

They have DNA with protein coat

They have free DNA without protein coat

57 / 165

Category: NEET & JEE

The roots that originate from the base of the
stem are

Prop roots

Lateral roots

Fibrous roots

Primary roots

58 / 165

Category: NEET & JEE

59 / 165

Category: NEET & JEE

In which of the following techniques, the
embryos are transferred to assist those
females who cannot conceive?

GIFT and ICSI

ZIFT and IUT

ICSI and ZIFT

GIFT and ZIFT

60 / 165

Category: NEET & JEE

The process of growth is maximum during

Lag phase

Log phase

Dormancy

Senescence

61 / 165

Category: NEET & JEE

The correct option for free expansion of an
ideal gas under adiabatic condition isΔ

q < 0, ΔT = 0 and w = 0

q > 0, ΔT > 0 and w > 0

q = 0, ΔT = 0 and w = 0

q = 0, ΔT < 0 and w > 0

62 / 165

Category: NEET & JEE

Identify the incorrect statement.

63 / 165

Category: NEET & JEE

The oxygenation activity of RuBisCo enzyme
in photorespiration leads to the formation of

1 molecule of 4-C compound and 1 molecule of 2-C compound

2 molecules of 3-C compound

1 molecule of 3-C compound

1 molecule of 6-C compound

64 / 165

Category: NEET & JEE

The freezing point depression constant (Kf) of
benzene is 5.12 K kg mol–¹. The freezing point
depression for the solution of molality
0.078 m containing a non-electrolyte solute in
benzene is (rounded off upto two decimal
places) :

0.40 K

0.80 K

0.20 K

0.60 K

65 / 165

Category: NEET & JEE

Flippers of Penguins and Dolphins are
examples of

Convergent evolution

Industrial melanism

Adaptive radiation

Natural selection

66 / 165

Category: NEET & JEE

Which of the following is not an inhibitory
substance governing seed dormancy?

Abscisic acid

Gibberellic acid

Phenolic acid

Para-ascorbic acid

67 / 165

Category: NEET & JEE

For the logic circuit shown, the truth table is:

68 / 165

Category: NEET & JEE

Cuboidal epithelium with brush border of
microvilli is found in

Ducts of salivary gland

Lining of intestine

Eustachian tube

Proximal convoluted tubule of nephron

69 / 165

Category: NEET & JEE

104, 71 and 71

175, 104 and 71

71, 104 and 71

71, 71 and 104

70 / 165

Category: NEET & JEE

Floridean starch has structure similar to

Starch and cellulose

Laminarin and cellulose

Mannitol and algin

Amylopectin and glycogen

71 / 165

Category: NEET & JEE

In relation to Gross primary productivity and
Net primary productivity of an ecosystem,
which one of the following statements is
correct?

There is no relationship between Gross primary productivity and Net primary productivity

Gross primary productivity is always less than net primary productivity

Gross primary productivity is always more than net primary productivity

Gross primary productivity and Net primary productivity are one and same

72 / 165

Category: NEET & JEE

A tertiary butyl carbocation is more stable
than a secondary butyl carbocation because
of which of the following ?

73 / 165

Category: NEET & JEE

A screw gauge has least count of 0.01 mm and
there are 50 divisions in its circular scale.

The pitch of the screw gauge is :

0.01 mm

0.5 mm

0.25 mm

1.0 mm

74 / 165

Category: NEET & JEE

Which of the following oxoacid of sulphur has
– O – O – linkage?

75 / 165

Category: NEET & JEE

The process responsible for facilitating loss
of water in liquid form from the tip of grass
blades at night and in early morning is

Transpiration

Plasmolysis

Root pressure

Imbibition

76 / 165

Category: NEET & JEE

The first phase of translation is

Recognition of DNA molecule

Aminoacylation of tRNA

Recognition of an anti-codon

Binding of mRNA to ribosome

77 / 165

Category: NEET & JEE

Strobili or cones are found in

Salvinia

Equisetum

Pteris

Marchantia

78 / 165

Category: NEET & JEE

Select the correct events that occur during
inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal
muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases

only (d)

(a) and (b)

(a), (b) and (d)

79 / 165

Category: NEET & JEE

In Young’s double slit experiment, if the
separation between coherent sources is halved
and the distance of the screen from the
coherent sources is doubled, then the fringe
width becomes :

four times

double

half

one-fourth

80 / 165

Category: NEET & JEE

The number of substrate level
phosphorylations in one turn of citric acid
cycle is

One

Two

Zero

Three

81 / 165

Category: NEET & JEE

Match the following :

82 / 165

Category: NEET & JEE

Which of the following is put into Anaerobic
sludge digester for further sewage treatment?

Floating debris

Effluents of primary treatment

Primary sludge

Activated sludge

83 / 165

Category: NEET & JEE

84 / 165

Category: NEET & JEE

The solids which have the negative
temperature coefficient of resistance are:

insulators and semiconductors

insulators only

metals

semiconductors only

85 / 165

Category: NEET & JEE

If the distance between two consecutive base
pairs is 0.34 nm and the total number of base
pairs of a DNA double helix in a typical
mammalian cell is 6.6 × 10⁹ bp, then the
length of the DNA is approximately

2.2 meters

2.0 meters

2.5 meters

2.7 meters

86 / 165

Category: NEET & JEE

Goblet cells of alimentary canal are modified
from

Squamous epithelial cells

Chondrocytes

Columnar epithelial cells

Compound epithelial cells

87 / 165

Category: NEET & JEE

Which of the following would help in
prevention of diuresis?

Decrease in secretion of renin by JG cells

More water reabsorption due to undersecretion of ADH

Atrial natriuretic factor causes vasoconstriction

Reabsorption of Na+ and water from renal tubules due to aldosterone

88 / 165

Category: NEET & JEE

The enzyme enterokinase helps in conversion
of

trypsinogen into trypsin

pepsinogen into pepsin

caseinogen into casein

protein into polypeptides

89 / 165

Category: NEET & JEE

For which one of the following, Bohr model is
not valid ?

Singly ionised helium atom (He+ )

Hydrogen atom

Deuteron atom

Singly ionised neon atom (Ne+ )

90 / 165

Category: NEET & JEE

91 / 165

Category: NEET & JEE

Bilaterally symmetrical and acoelomate
animals are exemplified by Ctenophora

Annelida

Platyhelminthes

Aschelminthes

Ctenophora

92 / 165

Category: NEET & JEE

Which of the following is a natural polymer?

cis-1, 4-polyisoprene

poly (Butadiene-styrene)

poly (Butadiene-acrylonitrile)

polybutadiene

93 / 165

Category: NEET & JEE

94 / 165

Category: NEET & JEE

Match the following and identify the correct
option.

95 / 165

Category: NEET & JEE

The QRS complex in a standard ECG
represents

Repolarisation of auricles

Depolarisation of auricles

Depolarisation of ventricles

Repolarisation of ventricles

96 / 165

Category: NEET & JEE

The calculated spin only magnetic moment of
Cr²+ ion is

5.92 BM

4.90 BM

3.87 BM

2.84 BM

97 / 165

Category: NEET & JEE

Reaction between acetone and
methylmagnesium chloride followed by
hydrolysis will give :

Sec. butyl alcohol

Isobutyl alcohol

Isopropyl alcohol

Tert. butyl alcohol

98 / 165

Category: NEET & JEE

Which of the following refer to correct
example(s) of organisms which have evolved
due to changes in environment brought about
by anthropogenic action?
(a) Darwin’s Finches of Galapagos islands.
(b) Herbicide resistant weeds.
(c) Drug resistant eukaryotes.
(d) Man-created breeds of domesticated
animals like dogs.

(b), (c) and (d)

only (d)

only (a)

(a) and (c)

99 / 165

Category: NEET & JEE

Dissolution of the synaptonemal complex
occurs during

Zygotene

Diplotene

Pachytene

Leptotene

100 / 165

Category: NEET & JEE

Two particles of mass 5 kg and 10 kg
respectively are attached to the two ends of a
rigid rod of length 1 m with negligible mass.
The centre of mass of the system from the 5 kg
particle is nearly at a distance of :

50 cm

33 cm

80 cm

67 cm

101 / 165

Category: NEET & JEE

By which method was a new breed ‘Hisardale’
of sheep formed by using Bikaneri ewes and
Marino rams?

Inbreeding

Out crossing

Mutational breeding

Cross breeding

102 / 165

Category: NEET & JEE

Identify the wrong statement with regard to
Restriction Enzymes.

They are useful in genetic engineering.

Sticky ends can be joined by using DNA ligases.

They cut the strand of DNA at palindromic sites.

Each restriction enzyme functions by inspecting the length of a DNA sequence.

103 / 165

Category: NEET & JEE

Which of the following is not correct about
carbon monoxide ?

The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.

It is produced due to incomplete combustion.

It forms carboxyhaemoglobin

It reduces oxygen carrying ability of blood.

104 / 165

Category: NEET & JEE

Light of frequency 1.5 times the threshold
frequency is incident on a photosensitive
material. What will be the photoelectric
current if the frequency is halved and intensity
is doubled?

four times

doubled

zero

one-fourth

105 / 165

Category: NEET & JEE

Identify the correct statement with reference
to human digestive system.

IIeum is a highly coiled part

Vermiform appendix arises from duodenum

Serosa is the innermost layer of the alimentary canal

IIeum opens into small intestine

106 / 165

Category: NEET & JEE

The energy equivalent of 0.5 g of a substance
is :

107 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

108 / 165

Category: NEET & JEE

From his experiments, S.L. Miller produced
amino acids by mixing the following in a
closed flask

109 / 165

Category: NEET & JEE

Identify the wrong statement with reference
to the gene ‘I’ that controls ABO blood groups.

The gene (I) has three alleles.

Allele ‘i’ does not produce any sugar.

When IA and IB are present together, they express same type of sugar.

A person will have only two of the three alleles.

110 / 165

Category: NEET & JEE

The mean free path for a gas, with molecular
diameter d and number density n can be
expressed as :

111 / 165

Category: NEET & JEE

The color code of a resistance is given below

The values of resistance and tolerance,
respectively, are

4.7 kΩ, 5%

470 Ω, 5%

47 kΩ, 10%

470 kΩ, 5%

112 / 165

Category: NEET & JEE

For transistor action, which of the following
statements is correct?

Base, emitter and collector regions should have same doping concentrations.

The base region must be very thin and lightly doped.

Both emitter junction as well as the collector junction are forward biased.

Base, emitter and collector regions should have same size

113 / 165

Category: NEET & JEE

In gel electrophoresis, separated DNA
fragments can be visualized with the help of

Ethidium bromide in infrared radiation

Acetocarmine in bright blue light

Acetocarmine in UV radiation

Ethidium bromide in UV radiation

114 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

115 / 165

Category: NEET & JEE

The specific palindromic sequence which is
recognized by EcoRI is

116 / 165

Category: NEET & JEE

If the head of cockroach is removed, it may
live for few days because

the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body

the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.

the cockroach does not have nervous system.

the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.

117 / 165

Category: NEET & JEE

Two bodies of mass 4 kg and 6 kg are tied to
the ends of a massless string. The string
passes over a pulley which is frictionless
(see figure). The acceleration of the system in
terms of acceleration due to gravity (g) is :

g/2

g/5

g/10

118 / 165

Category: NEET & JEE

119 / 165

Category: NEET & JEE

The plant parts which consist of two
generations - one within the other
(a) Pollen grains inside the anther
(b) Germinated pollen grain with two male
gametes
(c) Seed inside the fruit
(d) Embryo sac inside the ovule

(a) and (d)

(a) only

(a), (b) and (c)

120 / 165

Category: NEET & JEE

1.0

0.5

zero

–1.0

121 / 165

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122 / 165

Category: NEET & JEE

123 / 165

Category: NEET & JEE

124 / 165

Category: NEET & JEE

According to Robert May, the global species
diversity is about

20 million

1.5 million

50 million

7 million

125 / 165

Category: NEET & JEE

Which is the important site of formation of
glycoproteins and glycolipids in eukaryotic
cells?

Peroxisomes

Polysomes

Golgi bodies

Endoplasmic reticulum

126 / 165

Category: NEET & JEE

Choose the correct pair from the following

Exonucleases - Make cuts at specific positions within DNA

Nucleases - Separate the two strands of DNA

Polymerases - Break the DNA into fragments

Ligases - Join the two DNA molecules

127 / 165

Category: NEET & JEE

Montreal protocol was signed in 1987 for
control of

Release of Green House gases

Disposal of e-wastes

Transport of Genetically modified organisms from one country to another

Emission of ozone depleting substances

128 / 165

Category: NEET & JEE

In a certain region of space with volume 0.2 m³
, the electric potential is found to be 5 V
throughout. The magnitude of electric field in
this region is :

zero

1 N/C

5 N/C

0.5 N/C

129 / 165

Category: NEET & JEE

A body weighs 72 N on the surface of the
earth. What is the gravitational force on it, at a
height equal to half the radius of the earth?

32 N

30 N

48 N

24 N

130 / 165

Category: NEET & JEE

Experimental verification of the chromosomal
theory of inheritance was done by

Mendel

Morgan

Boveri

Sutton

131 / 165

Category: NEET & JEE

Match the following

132 / 165

Category: NEET & JEE

Elimination reaction of 2-Bromo-pentane to
form pent-2-ene is
(a) -Elimination reaction
(b) Follows Zaitsev rule
(c) Dehydrohalogenation reaction
(d) Dehydration reaction

(b), (c), (d)

(a), (c), (d)

(a), (b), (d)

(a), (b), (c)

133 / 165

Category: NEET & JEE

Embryological support for evolution was
disapproved by

Charles Darwin

Alfred Wallace

Oparin

Karl Ernst von Baer

134 / 165

Category: NEET & JEE

Identify the incorrect match.

(b), (ii)

(c), (iii)

(a), (i)

(d), (iv)

135 / 165

Category: NEET & JEE

Name the plant growth regulator which upon
spraying on sugarcane crop, increases the
length of stem, thus increasing the yield of
sugarcane crop.

Gibberellin

Abscisic acid

Ethylene

Cytokinin

136 / 165

Category: NEET & JEE

Paper chromatography is an example of

Thin layer chromatography

Adsorption chromatography

Column chromatography

Partition chromatography

137 / 165

Category: NEET & JEE

A capillary tube of radius r is immersed in
water and water rises in it to a height h. The
mass of the water in the capillary is 5 g.
Another capillary tube of radius 2r is immersed
in water. The mass of water that will rise in this
tube is :

10.0 g

20.0 g

2.5 g

5.0 g

138 / 165

Category: NEET & JEE

Identify the wrong statement with reference
to transport of oxygen

Binding of oxygen with haemoglobin is mainly related to partial pressure of O2

Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin

Low pCO2 in alveoli favours the formation of oxyhaemoglobin

Partial pressure of CO2 can interfere with O2 binding with haemoglobin

139 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

140 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

141 / 165

Category: NEET & JEE

Snow-blindness in Antarctic region is due to

Freezing of fluids in the eye by low temperature

High reflection of light from snow

Inflammation of cornea due to high dose of UV-B radiation

Damage to retina caused by infra-red rays

142 / 165

Category: NEET & JEE

Which of the following is a cationic
detergent?

Sodium dodecylbenzene sulphonate

Cetyltrimethyl ammonium bromide

Sodium lauryl sulphate

Sodium stearate

143 / 165

Category: NEET & JEE

Which of the following alkane cannot be made
in good yield by Wurtz reaction?

n-Heptane

n-Hexane

2,3-Dimethylbutane

n-Butane

144 / 165

Category: NEET & JEE

Identify the correct statement with regard to
G1 phase (Gap 1) of interphase.

Reorganisation of all cell components takes place.

Nuclear Division takes place

Cell is metabolically active, grows but does not replicate its DNA.

DNA synthesis or replication takes place.

145 / 165

Category: NEET & JEE

Taking into account of the significant figures,
what is the value of 9.99 m – 0.0099 m?

9.9801 m

9.98 m

9.9 m

9.980 m

146 / 165

Category: NEET & JEE

Light with an average flux of 20 W/cm² falls on
a non-reflecting surface at normal incidence
having surface area 20 cm² . The energy
received by the surface during time span of
1 minute is :

12 × 10³ J

48 × 10³ J

10 × 10³ J

24 × 10³ J

147 / 165

Category: NEET & JEE

A 40 μF capacitor is connected to a 200 V,
50 Hz ac supply. The rms value of the current
in the circuit is, nearly :

2.05 A

1.7 A

25.1 A

2.5 A

148 / 165

Category: NEET & JEE

Sucrose on hydrolysis gives

α-D-Glucose +β-D-Fructose

α-D-Glucose +β-D-Glucose

β-D-Glucose +α-D-Fructose

α-D-Fructose +β-D-Fructose

149 / 165

Category: NEET & JEE

Two cylinders A and B of equal capacity are
connected to each other via a stop cock. A
contains an ideal gas at standard temperature
and pressure. B is completely evacuated. The
entire system is thermally insulated. The stop
cock is suddenly opened. The process is :

isobaric

adiabatic

isochoric

isothermal

150 / 165

Category: NEET & JEE

Match the following columns and select the
correct option.

151 / 165

Category: NEET & JEE

A ray is incident at an angle of incidence i on
one surface of a small angle prism (with angle
of prism A) and emerges normally from the
opposite surface. If the refractive index of the
material of the prism is μ, then the angle of
incidence is nearly equal to :

152 / 165

Category: NEET & JEE

The ovary is half inferior in :

Brinjal

Sunflower

Mustard

Plum

153 / 165

Category: NEET & JEE

Anisole on cleavage with HI gives

154 / 165

Category: NEET & JEE

Assume that light of wavelength 600 nm is
coming from a star. The limit of resolution of
telescope whose objective has a diameter of
2 m is :

155 / 165

Category: NEET & JEE

The increase in the width of the depletion
region in a p-n junction diode is due to :

forward bias only

both forward bias and reverse bias

increase in forward current

reverse bias only

156 / 165

Category: NEET & JEE

Which of the following regions of the globe
exhibits highest species diversity?

Himalayas

Madagascar

Western Ghats of India

Amazon forests

157 / 165

Category: NEET & JEE

Which of the following amine will give the
carbylamine test?

158 / 165

Category: NEET & JEE

Which of the following is a basic amino
acid ?

Alanine

Tyrosine

Serine

Lysine

159 / 165

Category: NEET & JEE

Which one of the following is the most
abundant protein in the animals?

Insulin

Collagen

Lectin

Haemoglobin

160 / 165

Category: NEET & JEE

Select the option including all sexually
transmitted diseases.

AIDS, Malaria, Filaria

Cancer, AIDS, Syphilis

Gonorrhoea, Malaria, Genital herpes

Gonorrhoea, Syphilis, Genital herpes

161 / 165

Category: NEET & JEE

The body of the ovule is fused within the funicle
at

Hilum

Micropyle

Nucellus

Chalaza

162 / 165

Category: NEET & JEE

Hydrolysis of sucrose is given by the following
reaction.

163 / 165

Category: NEET & JEE

164 / 165

Category: NEET & JEE

The mixture which shows positive deviation
from Raoult’s law is

Ethanol + Acetone

Chloroethane + Bromoethane

Acetone + Chloroform

Benzene + Toluene

165 / 165

Category: NEET & JEE

Identify the correct statement from the
following :

Wrought iron is impure iron with 4% carbon.

Pig iron can be moulded into a variety of shapes.

Vapour phase refining is carried out for Nickel by Van Arkel method.

Blister copper has blistered appearance due to evolution of CO2

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NEET 2020 Question Papers E4 Online Mock test With Answers

Introduction :

It is the only medical entrance examination held on an all-India basis and hence attracts a multitude of students. The vast and varied syllabus of the exam coupled with the high level of competition makes NEET one of the toughest entrance exams in the country.

The National Eligibility cum Entrance Test (NEET) is an all-India medical entrance examination held in India. The exam is conducted by the National Testing Agency (NTA) every year to offer admissions to students in undergraduate medical programs.

Take NEET Mock Test here online for free. Mock Test of NEET is an important part of exam preparation. NEET Mock Test by TayariOnline is based on exam syllabus and level of exam. Practice physics, chemistry, zoology, botany of NEET level with online mock test.

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