Sample NEET Mock Test

QUESTION: 1

A step up transformer connected to a 220 V AC line is to supply 22 kV for a neon sign in secondary circuit. In primary circuit a fuse wire is connected which is to blow when the current in the secondary circuit exceeds 10mA. The turn ratio of the transformer is

A.
50
B.
100
C.
150
D.
200

Solution:

QUESTION: 2

An electron and a proton have the same wave length. Which one of the following statements is correct about them?

A.
The momentum of the proton is greater than that of the electron
B.
They have the same speed
C.
The kinetic energy of the proton is greater than that of the electron
D.
The kinetic energy of the proton is less than that of the electron

Solution:

de-Broglie wavelength λ = h/p where p = h/√2mE

∴ λ = h/√2mE

⟹λ ∝ 1/√m (∵ E = constant)

As me < mp

⟹ λ_p < λ_e

Thus proton has smaller wavelength.

QUESTION: 3

Evidence for the wave nature of light cannot be obtained from

A.
Reflection
B.
Doppler effect
C.
Interference
D.
Diffreaction

Solution:

QUESTION: 4

Emission of electrons in the photoelectric effect is possible, if

A.
Metal surface is highly polished
B.
The incident light is of sufficiently high intensity
C.
The light is incident at right angles to the surface
D.
The incident light of sufficiently low wave length

Solution:

QUESTION: 5

A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break

A.
When the mass is at the highest point of the circle
B.
When the mass is at the lowest point of the circle
C.
When the wire is horizonal
D.
At an angle of cos⁻¹ (1/3) from the upward vertical

Solution:

QUESTION: 6

If there is an increase in length by 0.1% due to stretching, the percentage increase in its resistance willbe

A.
0.1%
B.
0.2%
C.
1%
D.
2%

Solution:

QUESTION: 7

A 2 Ω resistor is connected inseries with R Ω resistor. This combination is connected across a cell. When the potential difference across 2 Ω resistor is balanced on a potentiometer wire, null point is obtained at a length of 300 cm. When the same procedure is repeated for R Ω resistor, null point is obtained at a length of 350 cm . Value of R is

A.
2.83 Ω
B.
3.33 Ω
C.
4.66 Ω
D.
5 Ω

Solution:

For only R=2Ω

Balance Length L=300cm

For RΩ resistance in series

Req=(2+R)Ω

Balance length L=350cm

From the potentiometer principal,

2=0.85(2+R)

2=1.7+0.85R

0.3=0.85R

R=2.8Ω

QUESTION: 8

An electron remains undeflected when passing perpendicular to mutually perpendicular electric and magnetic fields. If the magnetic field is 8 Gauss and elecric field is 4000 V/m, the velocity of the electron is

A.
2 x 10⁶ ms⁻¹
B.
5 x 10⁶ ms⁻¹
C.
6 x 10⁶ ms⁻¹
D.
7.5 x 10⁶ ms⁻¹

Solution:

Electric force balances magnetic force. so net force on an electron will be zero.
qE = qvB
E = vB
v = E/B
v = 4000/(8*10^-4)
v = 5 * 10⁶ m/s

QUESTION: 9

In a discharge tube at 0.2 mm of Hg pressure, there is a formation of

A.
Crooke's dark space
B.
Faraday's dark space
C.
both spaces partly
D.
Crooke's dark space with flow near the electrodes

Solution:

QUESTION: 10

The de-Broglie wavelength of an electron in the first Bohr orbit is

A.
Equal to the circumference of the first orbit
B.
Equal to twice the circumference of the first orbit
C.
Equal to half the circumference of the first orbit
D.
Equal to one fourth the circumference of two first orbit

Solution:

QUESTION: 11

Which of the following is true for photon

A.
E = hc/λ
B.
E = 1/2mu²
C.
P = E/2v
D.
E = 1/2mc²

Solution:

QUESTION: 12

Which of the following electromagnetic waves have the smallest wavelength?

A.
γ-rays
B.
X-rays
C.
UV waves
D.
infra-red rays

Solution:

QUESTION: 13

Which of the following radiations has the least wavelength?

A.
γ-rays
B.
β-rays
C.
α-rays
D.
X-rays

Solution:

QUESTION: 14

An L.C. circuit contains 10 mH inductor and a 25 μ F capacitor. The resistance of the circuit is negligible. The energy stored in the circuit is completely magnetic at time (in milli seconds) being measured from the instant when the circuit is closed

A.
1.57,4.71,7.85
B.
1.57,3.14,4.71
C.
0,1.57,4.71
D.
None of these

Solution:

When R is negigible,

Therefore, t = 1.57, 4.71, 7.85 ... milli sec

QUESTION: 15

At a point A, there is an electric field of 500 V-m⁻¹ and potential difference of 3000 V. The distance between the point charge and the point A is

A.
6 m
B.
12 m
C.
36 m
D.
144 m

Solution:

QUESTION: 16

The escape velocity of an object on a planet whose radius is 4 times that of the earth and acceleration due to gravity 9 times that on the earth is

A.
67.2 k ms⁻¹
B.
37.4 k ms⁻¹
C.
111.2 k ms⁻¹
D.
25.2 k ms⁻¹

Solution:

QUESTION: 17

Two capacitors of capacity 4 μF and 6 μF are connected in series and a battery is connected to the combination the energy stored is E₁. If they are connected in parallel and if the same battery is connected to this combination the energy stored is E₂. The ratio of E₁ and E₂ is

A.
4 : 9
B.
9 : 14
C.
6 : 25
D.
7 : 12

Solution:

As the capacitors are connected in series

QUESTION: 18

A gas exerts pressure on the walls of the container, because the gas molecules

A.
have weight
B.
have momentum
C.
collide with each other
D.
collide with the walls of the container

Solution:

QUESTION: 19

A stone of mass m is tied to a string and is moved in vertical circle of radius r making n revolutions per minute. The total tension in the string when the stone is at lowest point is

A.
mg
B.
m (g+π nr²)
C.
M (g+nr)
D.
M[g+(π²n²)/900]

Solution:

QUESTION: 20

A body takes 5 minutes for cooling from 50°C to 40°C. Its temperature comes down to 33.33°C in next 5 minutes. Temperature of surroundings is

A.
15°C
B.
20°C
C.
25°C
D.
10°C

Solution:

QUESTION: 21

A rectangular loop carrying current i is placed in a uniform magnetic field B. The area enclosed by the loop is A. If there are n turns in the loop, the torque acting on the loop is given by

A.
n i (A̅ x B̅)
B.
n i A̅ . B̅
C.
1/n (i A̅ x B̅)
D.
1/n (i A̅ . B̅)

Solution:

QUESTION: 22

In a deflection magnetometer experiment in tan A position, a short-bar magnet placed at 18 cm from the centre of the compass needle produces a deflection of 30° . If another magnet of same length but 16 times pole strength as that of first magnet is placed in tan B position at 36cm, the deflection will be

A.
0°
B.
30°
C.
45°
D.
60°

Solution:

QUESTION: 23

If iron pieces loaded in a ship, are thrown into the water, then level of water will

A.
rise
B.
fall
C.
remains same
D.
may rise or fall

Solution:

QUESTION: 24

The pole strength of a 12cm long bar magnet is 20 A-m. The magnetic induction at a point 10cm away from the centre of the magnet on its axial line is ( μ 0 4 π = 10^-7 Hm^-1 )

A.
1.1 x 10^-3 T
B.
2.2 x 10^-3 T
C.
1.1 x 10^-2 T
D.
2.2 x 10^-2 T

Solution:

We known 2l = 12cm = 0.12m
m = 20 Am and d = 0.1m

QUESTION: 25

The Young's modulus of a wire of length (L) and radius (r) is Y N-m⁻². If the length is reduced to L/2 and radius to r/2, then Young's modulus for the wire will be

A.
Y/2
B.
Y
C.
2 Y
D.
4 Y

Solution:

QUESTION: 26

The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an:

A.
isomer of parent
B.
isotone of parent
C.
isotope of parent
D.
isobar of parent

Solution:

QUESTION: 27

A radio active sample has a half life of 5 days. To decay from 8 micro curies to 1 micro-curie, the number of days taken will be

A.
40
B.
25
C.
15
D.
10

Solution:

QUESTION: 28

The above is a plot of binding energy per nucleon E_b, against the nuclear mass M;, A, B, C, D, E, F correspond to different nuclei. Consider four reactions:
(i) A + B → C + ε
(ii) C → A + B + ε
(iii) D + E → F + ε and
(iv) F → D + E + ε
Where ε is the energy released ? In which reactions is ε positive?

A.
(i) and (iv)
B.
(i) and (iii)
C.
(ii) and (iv)
D.
(ii) and (iii)

Solution:

QUESTION: 29

If a simple pendulum oscillates with an amplitude 50 mm and time period of 2 s, then its maximum velocity, is

A.
0.10 m/s
B.
0.15 m/s
C.
0.8 m/s
D.
0.16 m/s

Solution:

QUESTION: 30

For what distance is ray optics a good approximation when the aperture is 4 mm wide and the wavelength is 500 nm?

A.
32 m
B.
64 m
C.
16 m
D.
8 m

Solution:

QUESTION: 31

If the luminous intensity of a unidirectional bulb is 100 candela, then total luminous flux emitted from the blub, is

A.
861 lumen
B.
986 lumen
C.
1,256 lumen
D.
1,561 lumen

Solution:

QUESTION: 32

If the earth were to suddenly contract to half of its present radius, then change in the duration of the day will be (Assume earth to be a perfect solid sphere of moment of inertia =2/5 MR²)

A.
6 h increase
B.
18 h increase
C.
6 h decrease
D.
18 h decrease

Solution:

QUESTION: 33

A hollow cylinder and a solid cylinder having the same mass and same diameter are released from rest simultaneously from the top of an inclined plane. Which will reach the bottom first

A.
The solid cylinder
B.
The hollow cylinder
C.
Both will reach the bottom together
D.
The one having greater density

Solution:

QUESTION: 34

Two mutually perpendicular simple harmonic vibrations have same amplitude, frequency and phase. When they superimpose, the resultant form of vibration will be

A.
A circle
B.
An ellipse
C.
A straight line
D.
A parabola

Solution:

QUESTION: 35

In comparison to a half wave rectifier, the full wave rectifier gives lower

A.
Efficiency
B.
Average dc
C.
Average output voltage
D.
None of these

Solution:

QUESTION: 36

The typical ionisation energy of a donor in silicon is

A.
10.0 eV
B.
1.0 eV
C.
0.1 eV
D.
0.001 eV

Solution:

When donor impurity (+5 valence) added to a pure silicon (+4 valence) , the +5 valence donor atom sits in the place of +4 valence silicon atom. So it has a net additional +1 electric charge. The four valence electron from covalent bond and get fixed in the lattice. The fifth electron (with net −1 electronic charge) can be approximated to revolve around +1 additional charge. The

QUESTION: 37

When a copper voltameter is connected with a battery of emf 12 volts. 2 gms of copper is deposited in 30 minutes. If the same voltameter is connected across a 6 volt battery, then the mass of copper deposited in 45 minutes would be

A.
1 gm
B.
1.5 gm
C.
2 gm
D.
2.5 gm

Solution:

QUESTION: 38

If a ball of 80 kg mass hits an ice cube and temperature of ball is 100°C, how much ice becomes water? Specific heat of ball is 0.2 cal/gram.

A.
20 g
B.
2 g
C.
200 g
D.
20 x 10³g

Solution:

QUESTION: 39

The height of a waterfall is 84 metre. Assuming that the entire kinetic energy of falling water is converted into heat, the rise in temperature of the water will be
(g = 9.8 m/s², J=4.2 joule/cal)

A.
0.196°C
B.
1.960°C
C.
0.96°C
D.
0.0196°C

Solution:

QUESTION: 40

Dimensions [ML⁻¹T⁻¹] is related with

A.
work
B.
torque
C.
energy
D.
coefficient of viscosity

Solution:

QUESTION: 41

The frequency of a radar is 780 MHz. The frequency of the reflected wave from aeroplane is increased by 2.6 kHz. The velocity of the aeroplane is

A.
2 km/sec
B.
1 km/sec
C.
0.5 km/sec
D.
0.25 km/sec

Solution:

QUESTION: 42

In a closed organ pipe, the 1^st resonance occurs at 50 cm. At what length of pipe, the 2^nd resonance will occur?

A.
150 cm
B.
50 cm
C.
100 cm
D.
200 cm

Solution:

QUESTION: 43

Water is flowing on the blades of a turbine at a rate of 100 kg-s⁻¹ from a certain spring. If the height of the spring be 100 m, then power transferred to the turbine will be

A.
0.1 kW
B.
1 kW
C.
10 kW
D.
100 kW

Solution:

QUESTION: 44

If the force acting on a mass is not a constant, but it is linearly changing as in the case of a mass attached to spring, the force itself is proportional to the extension or compression of the spring. The work done in moving a body by extending a spring by x is

A.
The force x average distance
B.
Average force x total distance
C.
Average distance x maximum force
D.
None of these

Solution:

The work done is the area of the triangle OAB = 1/2 Fx
It is the force that is varying with x and it is linearly increasing with x, (1/2 F)x x satisfies the logic better though mathematically this is the same as F x/2.

QUESTION: 45

A body of weight 'mg' is hanging on a string, which extends its length by l. The work done in extending the string is

A.
mgl
B.
mgl/2
C.
2 mgl
D.
none of these

Solution:

QUESTION: 46

The reaction of ethanol with H₂SO₄ does not give

A.
Ethylene
B.
Diethyl ether
C.
Acetylene
D.
Ethyl hydrogen sulphate

Solution:

QUESTION: 47

Which does not react with Fehling solution ?

A.
Acetaldehyde
B.
Propanone
C.
Glucose
D.
Formic acid

Solution:

Propanone is methyl ketone
So ketones do not react with fehling's solution

QUESTION: 48

For principle quantum number n = 4, the total number of orbitals having l = 3 is

A.
3
B.
7
C.
5
D.
9

Solution:

QUESTION: 49

The wavelength of light waves is inversely proportional to its

A.
radius
B.
energy
C.
velocity
D.
Quantum number

Solution:

QUESTION: 50

Which of the following does not show electromeric effect?

A.
ethers
B.
ketones
C.
aldehydes
D.
alkenes

Solution:

QUESTION: 51

The bromination of benzene in presence of FeBr₃ is an example of

A.
electrophilic addition
B.
free radical addition
C.
electrophilic substitution
D.
nucleophilic addition

Solution:

QUESTION: 52

Oxidation of glucose is one of the most important reactions in a living cell. What is the number of ATP molecules generated in cells from one molecule of glucose?

A.
28
B.
38
C.
12
D.
18

Solution:

QUESTION: 53

Which one of the following molecules is paramagnetic?

A.
CO₂
B.
SO₂
C.
NO
D.
H₂O

Solution: Paramagnetic materials, those with unpaired electrons, are attracted bymagnetic fields whereas diamagneticmaterials, those with no unpaired electrons, are weakly repelled by such fields. O2 is paramagnetic because it has two unpaired electrons, one in each of its p* orbitals.

QUESTION: 54

Which of the following is the weakest acid ?

A.
B.
CH₃COOH
C.
HCOOH
D.

Solution:

QUESTION: 55

The maximum possible number of hydrogen bonds in which a water molecule can participate is

A.
4
B.
3
C.
2
D.
1

Solution:

QUESTION: 56

Which relation is correct ?

A.
∆G = ∆H - T∆S
B.
∆G = ∆H + T∆S
C.
∆G = T∆S - ∆H
D.
∆G = ∆H - sdT

Solution:

QUESTION: 57

When one mole of the gas is heated at constant volume ,temperature get raised from 298 K to 308 K.Heat supplied to the gas is 500 J.Then which among the following is a correct statements ?

A.
q = W = 500 J ; ΔU = 0
B.
q = ΔU = 500 J ; W= 0
C.
q = ΔW = 500 J ;ΔU=500 J
D.
ΔU = 0; q = W= - 500 J

Solution:

As the gas is heated at constant volume. Therefore ΔV = 0, and W = 0 and at the same time q = ΔU

QUESTION: 58

In a chemical equilibrium K_c = K_p when :

A.
the number of molecules entering into the reaction is more than the number of molecules produced
B.
the total number of moles of the reactants equal that of the products
C.
the number of molecules entering into the reaction is the same as the number of molecules produced
D.
the number of molecules entering into the reaction is less than the number of molecules produced

Solution:

K_p = K_c when Δn = 0

QUESTION: 59

What is the rate of a reaction in mol-L⁻¹-s⁻¹ in a first order reaction, if its half-life period is 693 s, and its concentration is 2 mol-L⁻_¹?

A.
200
B.
100
C.
0.02
D.
0.002

Solution:

QUESTION: 60

Identify the reaction in which the heat liberated corresponds to the heat of formation (Δ H)

A.
C(diamond) + O₂(g) → CO₂ (g) + heat
B.
2H₂ (g) + O₂(g) → 2H₂O (g) + heat
C.
C(diamond) + 2H₂ (g) → CH₄ (g) + heat
D.
S(rhombic) + O₂(g) → SO₂(g) + heat

Solution:

QUESTION: 61

The molar heat capacity of water at constant pressure is 75 J-K⁻¹-mol⁻¹. When 1.0 KJ of heat is supplied to 100 g of water, then increase in the temperature of water is

A.
2.4 K
B.
4.8 K
C.
6.6 K
D.
1.2 K

Solution:

QUESTION: 62

Which of the following is used for inducing sleep?

A.
Paracetamol
B.
Chloroquine
C.
Bithional
D.
Barbituric acid derivatives

Solution:

QUESTION: 63

The compound which has one isopropyl group is

A.
2,2,3,3-Tetramethylpentane
B.
2,2-Dimethylpentane
C.
2,2,3-Trimethylpentane
D.
2-Methylpentane

Solution:

QUESTION: 64

Which of the following will give maximum number of isomers?

A.
[Co(NH₃)₄Cl₂]
B.
[Ni(en)(NH₃)₄]²⁺
C.
[Ni(C₂O₄)(en)₂]
D.
[Cr(SCN)₂(NH₃)₄]²⁺

Solution:

QUESTION: 65

Which one of the following does not obey the 18-electron rule?

A.
B.
C.
D.

Solution:

QUESTION: 66

If the standard electrode potential of Cu²⁺/Cu electrode is 0.34 V, what is the electrode potential at 0.01 M concentration of Cu²⁺? (T = 298K)

A.
0.399 V
B.
0.281 V
C.
0.222 V
D.
0.176 V

Solution:

QUESTION: 67

A current liberates 0.504 g of hydrogen in 2 hours, the amount of copper liberated from a solution of CuSO₄ by the same current flowing for the same time would be

A.
31.8 g
B.
63.6 g
C.
15.9 g
D.
6.36 g

Solution:

QUESTION: 68

Consider the following four electrodes

If the standard reduction potential of Cu⁺² ∕ C u is + 0.34 V , the reduction potential (in volts) of the above electrodes follow the order

A.
A > D > C > B
B.
B > C > D > A
C.
C > D > B > A
D.
A > B > C > D

Solution:

QUESTION: 69

The elements or organisms which consume a pollutant, are known as

A.
sink
B.
source
C.
absorbent
D.
adsorbent

Solution:

QUESTION: 70

Which of the following process is used in the extractive metallurgy of magnesium?

A.
self reduction
B.
thermite reduction
C.
fused salt eletrolysis
D.
aqueous solution eletrolysis

Solution:

QUESTION: 71

A closed flask contains water in all its three states, solid, liquid and vapour at 0°C. In this situation the average kinetic energy of water molecules will be

A.
The greatest in the liquid state
B.
The greatest in the solid state
C.
The greatest in vapour state
D.
The greatest in all the three states

Solution:

The average kinetic energy is maximum in the gaseous state

QUESTION: 72

Excess of N⁺ ions in human system causes

A.
Diabetes
B.
Anaemia
C.
Low blood pressure
D.
High blood pressure

Solution:

The increasing of the concentration of Sodium ions in blood would attract water from the surrounding issues, because of the osmotic pressure.

The increasing of the total volume of blood makes the blood pressure higher.

Hence, Option D is the correct answer.

QUESTION: 73

The temperature at which real gases obey the ideal gas laws over a wide range of pressure is called

A.
Critical temperature
B.
Boyle temperature
C.
Inversion temperature
D.
Reduced temperature

Solution:

QUESTION: 74

Which of the following is most dense?

A.
Fe
B.
Cu
C.
B
D.
Pb

Solution:

QUESTION: 75

Which of the following cannot work as oxidizing agent?

A.
O₂
B.
KMnO₄
C.
H₂O₂
D.
I⁻

Solution:

QUESTION: 76

Which of the following salts on dissolution in water gives pH less than 7 at 25°C ?

A.
KCN
B.
CH₃COONa
C.
NaBr
D.
NH₄Cl

Solution:

QUESTION: 77

If the solubility of PbCl₂ at 25°C is 6.3x10⁻³ mole/litre, its solubility product at that temperature is

A.
(6.3x10⁻³) x (6.3 x10⁻³)²
B.
(6.3 x10⁻³) x (12.6 x10⁻³)²
C.
(6.3x10⁻³) x (12.6 x10⁻³)
D.
(12.6x10⁻³) x (12.6 x10⁻³)

Solution:

QUESTION: 78

Which one of the following methods is neither meant for synthesis nor for separation of amines ?

A.
Wurtz reaction
B.
Curtius reaction
C.
Hinsberg method
D.
Hofmann method

Solution:

QUESTION: 79

Stability of following alkenes in the increasing order is:

A.
I < III < IV < II
B.
I < II < III < IV
C.
IV < III < II < I
D.
II < III < IV < I

Solution:

I have 6 α-H. II has 12 α-H. III has 6 α and IV has 9 α-H.
However among I and III, III is more stable as after hyperconjugation in I and III,I has 2° carbanion which is less stable than 1° carbanion in III.
So, the order of stability is :-
I<III<IV<II

QUESTION: 80

Polyvinyl alcohol can be prepared by

A.
Polymerization of vinyl alcohol
B.
Alkaline hydrolysis of polyvinyl acetate
C.
Polymerization of acetylene
D.
Reaction of acetylene with H₂SO₄ in presence of HgSO₄

Solution:

QUESTION: 81

In which case product formed is identical in the absence or presence of peroxide?

A.
B.
C.
D.

Solution:

QUESTION: 82

If 0.24g of a volatile liquid upon vapourization gives 45ml of vapours at NTP. What will be the vapour density of the substance? (Density of H = 0.089 gL⁻¹)

A.
95.39
B.
5.993
C.
95.93
D.
56.0

Solution:

QUESTION: 83

If 0.32 g of an organic compound containing sulphur produces 0.233g of BaSO₄. Then the percentage of sulphur in it is

A.
10
B.
15
C.
20
D.
25

Solution:

QUESTION: 84

Volume of 0.1 M K₂Cr₂O₇ required to oxidise 35 ml of 0.5 M FeSO₄ solution is

A.
29 ml
B.
87 ml
C.
175 ml
D.
145 ml

Solution:

QUESTION: 85

Which of the following can act as an oxidising as well as reducing agent ?

A.
H₂S
B.
SO₃
C.
H₂O₂
D.
H₂SO₄

Solution:

QUESTION: 86

How many moles of Fe²⁺ ions are formed when excess iron is treatd with 500 mL of 0.4 N HCl under inert atmosphere? Assume no change in volume?

A.
0.4
B.
0.1
C.
0.2
D.
0.8

Solution:

QUESTION: 87

What happens when isotonic solution of A (mol.wt.342) and B (mol. wt.60) are put into communication through semipermeable membrane?

A.
Transference of solvent from solution A to that of B takes place
B.
Transference of solvent from solution B to that of A takes place
C.
No transference of solvent from solution A to that of B takes place
D.
Change in temperature of solutions takes place

Solution:

QUESTION: 88

Both acid and base may react with which of the following oxides?

A.
CaO
B.
Na₂O₂
C.
ZnO
D.
Mn₃O₄

Solution:

QUESTION: 89

Which of the following can't be explained by adsorption?

A.
Heterogeneous catalysis
B.
Catalytic action of bioenzymatic molecules
C.
Decolourisation of sugar
D.
Chromatography

Solution:

QUESTION: 90

Which of the following properties is not of transition elements ?

A.
Colour
B.
Paramagnetism
C.
Fixed valency
D.
None of the above

Solution:

QUESTION: 91

Bryophytes can be differentiated from algae because they

A.
are thalloid forms
B.
contain chloroplast
C.
possess archegonia
D.
have no conducting tissue

Solution:

QUESTION: 92

A true terrestrial animal is

A.
Frog
B.
Necturus
C.
Tortoise
D.
Toad

Solution: True terrestrial are those which entirely live on land..so toad.

QUESTION: 93

Tyloses are

A.
Wound healing secretions
B.
Responsible for plugging the lumen of vessels
C.
Special epidermal hairs covering stomata in xerophytes
D.
Callose secretion on sieve plates

Solution:

QUESTION: 94

Funaria rhizoids are distinguished by which of the following character

A.
Colourless unicellular
B.
Colourless multicellular
C.
Colourless multicellular structure provided with oblique septa
D.
None of the above

Solution:

QUESTION: 95

The stage of cell cycle when cell has undergone differentiation is

A.
G₀
B.
G₁
C.
G₃
D.
G₄

Solution:

QUESTION: 96

If mitotic division is restricted to G₁ phase of cell cycle, the condition is known as

A.
G₂-phase
B.
S-phase
C.
M-phase
D.
G₀-phase

Solution:

During G₁ phase a cell may continue on the cycle and divide or it can permanently stop division and enter G₀ or quiescent stage. The cell cycle is stopped in the middle of G₁-phase due to activation of certain genes. The genes allow the cell to grow to a particular size, assume particular shape and come to perform specific functions. The cell in the G₀ may be considered to be withdrawn from the cell cycle. When conditions change and growth is resumed the cell re-enters the G₁ period.

QUESTION: 97

Funaria gametophyte is

A.
Monoecious and autoecious
B.
Monoecious and heteroecious
C.
Dioecious and autoecious
D.
Dioecious and heteroecious

Solution:

QUESTION: 98

ER remain associated with

A.
dictyosomes
B.
mitochondria
C.
karyotheca
D.
chloroplast

Solution:

QUESTION: 99

Each phospholipid molecule in a cell membrane consists of :

A.
one polar head and two nonpolar tail
B.
one polar head and one polar tail
C.
one nonpolar head and one polar tail
D.
one nonpolar head and one nonpolar tail

Solution:

QUESTION: 100

Phragmoplast is formed during

A.
cell plate formation in animal cells
B.
protein synthesis in animal cells
C.
lysis in animal cells
D.
cell plate formation in plant cells

Solution:

QUESTION: 101

Red blood cells survive around _____ days.

A.
120
B.
240
C.
10
D.
360

Solution:

QUESTION: 102

A colour blind girl is rare because she will be born only when

A.
Her mother and maternal grand father were colour blind
B.
Her father and maternal grand father were colour blind
C.
Her mother is colour blind and father has normal vision
D.
Parents have normal vision but grand parents were colour blind

Solution:

QUESTION: 103

Sudden inheritable genetic change is

A.
Mutation
B.
Inheritance of acquired trait
C.
Independent assortment
D.
Natural selection

Solution:

QUESTION: 104

Which of the following is not true?

A.
Blood is a connective tissue
B.
Blood contains both a cellular and a non-cellular portion
C.
None of the blood cells contain true nuclei
D.
The pH of blood is typically between 7.35 and 7.45

Solution:

QUESTION: 105

The stem cells that give rise to all red blood cells, white blood cells, and platelets are known as:

A.
Hemocytoblasts
B.
Reticulocytes
C.
Hemophilioblasts
D.
Myeloid stem cells

Solution:

QUESTION: 106

Anemia is:

A.
Any condition in which the body has an abnormal oxygen carrying capacity
B.
Only a genetic disorder
C.
Marked by a massive increase in blood viscosity
D.
Never the result of nutrient deficiency

Solution:

QUESTION: 107

Population explosion has occurred in the last :

A.
500 years
B.
300 years
C.
100 years
D.
250 years

Solution:

QUESTION: 108

Progesterone is generally present in contraceptive pills. Its function is to :

A.
Check ovulation
B.
Prevent fertilization
C.
Prevent implantation
D.
Prevent cleavage

Solution:

QUESTION: 109

The function of copper-T is to prevent

A.
Fertilization
B.
Egg maturation
C.
Ovulation
D.
Implantation of blastocyst

Solution:

QUESTION: 110

When salivary amylase enters the stomach, it becomes

A.
Basic
B.
Buffered
C.
Activated
D.
Denatured

Solution:

QUESTION: 111

An ecosystem is

A.
Different communities of plants, animals and microbes together with their physico-chemical environments
B.
Different communities of plants and microbes along with their physico-chemical environments
C.
A localised assemblage of several plants and animals
D.
An assemblage of plants, animals and their surroundings

Solution:

QUESTION: 112

Which of the following is true of the liver?

A.
Hepatocytes synthesize many of the blood proteins such as albumin and antibodies
B.
Hepatocytes synthesize 80% of the bile in the body with the other 20% coming from the pancreas
C.
The liver receives more nutrient-rich blood than oxygen-rich blood
D.
The liver is the 2nd largest gland in the body

Solution:

QUESTION: 113

Which of the following pair of geographical areas show maximum biodiversity in our country?

A.
Kerala and Punjab
B.
Eastern Ghats and West Bengal
C.
Sunderbans and Rann of Kutch
D.
Eastern Himalayas and Western Ghats

Solution:

QUESTION: 114

During menstruation the level of progesterone in the blood is

A.
Low
B.
Normal
C.
High
D.
Very high

Solution:

QUESTION: 115

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

A.
Thymus
B.
Pancreas
C.
Pineal
D.
Pituitary

Solution:

QUESTION: 116

Nonprotein component of enzyme is

A.
Apoenzyme
B.
Holoenzyme
C.
Coenzyme
D.
Isozyme

Solution:

QUESTION: 117

Of the total enzymes present in a cell, mitochondria account for

A.
40%
B.
70%
C.
95%
D.
10%

Solution:

QUESTION: 118

Which of the following monkey has prehensile tail?

A.
Loris
B.
Spider monkey
C.
Tarsiers
D.
Rhesus monkey

Solution:

QUESTION: 119

Largest sperms are found in-

A.
Pinus
B.
Mango
C.
Cycas
D.
Sunflower

Solution:

The male gametes (spermatozoids) of Cycads and Ginkgo are unique among seed plants. It is multiflagellate and very large.

QUESTION: 120

Gymnosperms are naked-seeded plants, because

A.
there is no ovule
B.
there is no fruit
C.
there is no ovary and fruit
D.
there is no fertilization

Solution:

QUESTION: 121

In E.coli, during lactose metabolism repressor binds to

A.
regualtor gene
B.
promoter gene
C.
operator gene
D.
structural gene

Solution:

QUESTION: 122

F₂-generation is produced by

A.
selfing the parents
B.
recessive cross between individual parents
C.
crossing F₁-progeny with one of the parents
D.
selfing the progeny of two individual parents

Solution:

QUESTION: 123

Which of the following charaters studied by Mendel in garden pea (Pisum sativum) was dominant ?

A.
Green pod colour
B.
Green seed colour
C.
Wrinkled seed shape
D.
Terminal flower position

Solution:

QUESTION: 124

The bone attached to the inner surface of the eardrum is called

A.
Stapes
B.
Incus
C.
Malleus
D.
Cochlea

Solution:

QUESTION: 125

Antigens are found

A.
Inside cytoplasm
B.
Inside nucleus
C.
On nuclear envelope
D.
On cell structure

Solution:

QUESTION: 126

Western blot test is used for confirmation of

A.
Filaria
B.
Anaemia
C.
Malaria
D.
AIDS

Solution:

QUESTION: 127

Antibody

A.
Induces formation of antigen
B.
Helps in production of WBC
C.
Is formed by WBC
D.
None of the above

Solution:

QUESTION: 128

What is characteristic of deuterostomes

A.
Spiral cleavage, blastopore becoming mouth
B.
Radial cleavage, blastophore becoming anus
C.
Spiral cleavage, blastopore becoming anus
D.
Radial cleavage, blastopore becoming mouth

Solution:

QUESTION: 129

Cell-tissue organisation occurs in

A.
Liver fluke
B.
Sponge
C.
Hydra
D.
Starfish

Solution:

QUESTION: 130

A disease due to allergic reaction is

A.
Goitre
B.
Hay Fever
C.
Enteric Fever
D.
Skin Fever

Solution:

QUESTION: 131

An organism which lacks sterile covering over its egg is

A.
Yeast
B.
Funaria
C.
Riccia
D.
Cycas

Solution:

QUESTION: 132

Which do not give out O₂

A.
Green algae
B.
Blue-green alage
C.
Green plants
D.
Photosynthetic bacteria

Solution:

QUESTION: 133

Which is source of Vitamin B₁₂

A.
Pseudomonas
B.
Spirulina
C.
Nostoc
D.
Oscillatoria

Solution:

Spirulina is rich in nutrients, some of which aren't found in the average daily vitamin. According to the FDA, Spirulina contains significant amounts of calcium, niacin, potassium, magnesium, B vitamins and iron. It also has essential amino acids (compounds that are the building blocks of proteins).

QUESTION: 134

Brown heart disease is due to deficiency of

A.
Iron
B.
Boron
C.
Potassium
D.
Molybdenum

Solution:

QUESTION: 135

Which one does not fix nitrogen?

A.
Azotobacter
B.
Spirogyra
C.
Nostoc
D.
Anabaena

Solution:

QUESTION: 136

Lipids are insoluble in water as they are

A.
Hydrophilic
B.
Hydrophobic
C.
Zwitter ions
D.
Neutral

Solution:

Lipids are basically fats and oils neither of which soluble in water because their molecules are nonpolar and they are not attracted by water molecules.

QUESTION: 137

NPK denotes

A.
Nitrogen, Protein, Kinetin
B.
Nitrogen, Protein, Potassium
C.
Nitrogen, Potassium, Kinetin
D.
Nitrogen, Phosphorus, Potassium

Solution:

QUESTION: 138

In cockroach, oxygen is transported to the tissues of the body by

A.
blood
B.
lymph
C.
plasma
D.
tracheoles

Solution:

QUESTION: 139

Apposition image in cockroach is formed when there is

A.
bright light
B.
dim light
C.
total darkness
D.
ALL THE THREE

Solution:

QUESTION: 140

Ootheca of Earthworm is produced by

A.
Female genitals
B.
Clitellum
C.
Genital papillae
D.
Male genitals

Solution:

QUESTION: 141

Chloragogen cells of Earthworm take part in

A.
Respiration
B.
Fat storage
C.
digestion
D.
Osmoregulation

Solution:

QUESTION: 142

In general ,the feature common to the flower of spadix,cyathium and hypanthodium is that they are

A.
Monandrous
B.
Synandous
C.
Declinous
D.
Achlamydeous

Solution:

QUESTION: 143

Transpiration is reduced in Opuntia by the formation of

A.
Nodes
B.
Internodes
C.
Flat, Fleshy, Structures
D.
Spines/Scales

Solution:

QUESTION: 144

Hypanthodium refers to specialised type of

A.
Ovary
B.
Thalamus
C.
Inflorescence
D.
Fruit

Solution:

QUESTION: 145

A one chambered one seeded indehiscent fruit developed from bicarpellary syncarpous ,inferior ovary is

A.
Nut
B.
Berry
C.
Cypsela
D.
Caryopsis

Solution:

QUESTION: 146

Stomata are sunken in

A.
Mesophytes
B.
Xerophytes
C.
Hygrophytes
D.
Hydrophytes

Solution:

QUESTION: 147

The main function of cerebrospinal fluid is

A.
Nourishment of brain and spinal cord
B.
Functioning as cushion against shocks
C.
Keeping the central nervous system moist
D.
All of the above

Solution:

QUESTION: 148

Soil rich in Fe and Al due to excessive leaching is

A.
Alluvial
B.
Laterite
C.
Loam
D.
Both A and B

Solution:

QUESTION: 149

Association between suckerfish and shark is :

A.
Symbiosis
B.
Commensalism
C.
Parasitism
D.
Predation

Solution:

QUESTION: 150

An important example of serendipity is

A.
cell theory by Schleiden and Schwann
B.
discovery of hereditary principles by Mendel
C.
discovery of penicillin by Flemming
D.
discovery of the cell by Robert Hooke

Solution:

QUESTION: 151

Biotechnologically produced erythropoitin is produced with the help of

A.
E.coli
B.
Saccharomyces cerevisiae
C.
Hybridome technology
D.
Any of these three

Solution:

QUESTION: 152

Yeast belongs to the class

A.
zygomycetes
B.
ascomycetes
C.
phycomycetes
D.
none above

Solution:

QUESTION: 153

Agricultural chemicals include

A.
pesticides
B.
fertilizers
C.
growth regulators
D.
all of these

Solution:

QUESTION: 154

A new strain of bacteria produced by biotechnology in alcohol industry is

A.
Escerichia coli
B.
Pseudomonas putida
C.
Bacillus subtilis
D.
Saccharomyces cerevisiae

Solution:

QUESTION: 155

Plant medium used widely in preparation of culture medium is got from

A.
Cycas revoluta
B.
Cocos nucifera
C.
Pinus roxburghii
D.
Borassus flabellifera

Solution:

QUESTION: 156

A fungus used for the fermentation of cheese is

A.
Rhizopus nigricans
B.
Mucor mucedo
C.
Penicillium camemberti
D.
Penicillium crysogenum

Solution:

QUESTION: 157

Lung Fluke is

A.
Hymenolepis nana
B.
Paragonimus westermani
C.
Schistosoma haematobium
D.
Echinococcus granulosus

Solution:

QUESTION: 158

Vessels and companion cells occur in

A.
Angiosperms
B.
Gymnosperms
C.
Pteridophytes
D.
Broypytes

Solution:

QUESTION: 159

Resin ducts of Pinus are an example of

A.
Lysigenous cavity
B.
Schizogenous cavity
C.
Vacuolated cells
D.
Intercellular spaces

Solution:

QUESTION: 160

6-10% solution of dextrin is

A.
dextron
B.
dextrin
C.
Acetobacter
D.
dextran

Solution:

QUESTION: 161

B.O.D. is connected with

A.
Organic matter
B.
Microbes
C.
Microbes and organic matter
D.
None of the above

Solution:

QUESTION: 162

The undesirable sounds, which disturb our environment, are called

A.
air pollution
B.
noise pollution
C.
soil pollution
D.
nuclear pollution

Solution:

QUESTION: 163

A community which starts succession in a habitat is

A.
Pioneer community
B.
Seral community
C.
Biotic community
D.
Ecosere

Solution:

QUESTION: 164

The aggregate of processes that determine the size and composition of any population is known as

A.
Population dynamics
B.
Population dispersal
C.
Population explosion
D.
Population density

Solution:

QUESTION: 165

In acid rain, sulphuric acid accounts for

A.
100%
B.
30%
C.
50%
D.
70%

Solution:

QUESTION: 166

Collagen is

A.
Carbohydrate
B.
Lipid
C.
Fibrous protein
D.
Globular proetin

Solution:

QUESTION: 167

Maturation of stamens and pistils, at different times in the same flower, is called

A.
heterospory
B.
hetrostyly
C.
dichogamy
D.
dichotomy

Solution:

QUESTION: 168

A plant raised from a single germinating pollen grain under cultural condition is called a

A.
Haploid plant
B.
Diploid plant
C.
Tetraploid plant
D.
Polyploid plant

Solution:

QUESTION: 169

Pollination by bats is called

A.
Anemophily
B.
Hydrophily
C.
Ornithophily
D.
None of the above

Solution:

QUESTION: 170

Microspore mother cell forms

A.
Microsporangium
B.
Pollen sac
C.
Pollen grains
D.
Male gametes

Solution:

QUESTION: 171

The genetic sex of a child is determined by the

A.
Sex chromosome contained in the sperm
B.
Sex chromosomes contained in the
C.
Number of sperm fertilizing the
D.
Position of the fetus in the uterus

Solution:

QUESTION: 172

Bulbovestibular gland is found in female rabbit. It is also known as

A.
Bartholin's gland
B.
Cowper's gland
C.
Perineal gland
D.
None of these

Solution:

QUESTION: 173

Testosterone in the adult male is produced by the

A.
Seminiferous tubules.
B.
Interstitial cells of Leydig.
C.
Bulbourethral glands.
D.
Sustenacular [Sertoli] cells.

Solution:

QUESTION: 174

Binomial system of nomenclature (given by Linnaeus) means that every organism has -

A.
One scientific name consisting of a generic and specific epithet
B.
Two names one latinize and other of the person
C.
One name given by to scientists
D.
Two names one scientific other popular.

Solution:

QUESTION: 175

The duct that is used by both the reproductive and excretory systems in males is the

A.
Ureter
B.
Urethra
C.
Renal pelvis
D.
Vas deferens

Solution:

QUESTION: 176

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

A.
Increased blood volume
B.
Increased alcohol intake
C.
Decreased blood pressure
D.
Decreased ADH secretion

Solution:

QUESTION: 177

Cucurbitaceae has plants yielding a variety of vegetables and fruits. What is the position of this family in Bentham and Hooker classification-

A.
Asterales of inferae
B.
Passiflorales of calycilorae
C.
Rosales of calyciflorae
D.
Parietales of thalamiflorae

Solution:

QUESTION: 178

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

A.
of increased pH
B.
Have decreased pH
C.
With increased Na_ _+ concentration
D.
With decreased NH3 concentration

Solution:

QUESTION: 179

The glomerulus is located between the

A.
Efferent arteriole and renal vein
B.
Renal artery and afferent arteriole
C.
Afferent arteriole and efferent Arteriole
D.
Efferent arteriole and peritubular capillaries

Solution:

QUESTION: 180

Most of the blood glucose entering the nephron returns to the plasma by the process of

A.
Osmosis in the loop of Henle
B.
Tubular excretion in The distal tubu
C.
Active transport in the proximal tubule
D.
Facilitated transport in the distal tubule.

Solution:

180 Questions MCQ Test NEET Mock Test Series | Sample NEET Mock Test

A step up transformer connected to a 220 V AC line is to supply 22 kV for a neon sign in secondary circuit. In primary circuit a fuse wire is connected which is to blow when the current in the secondary circuit exceeds 10mA. The turn ratio of the transformer is

An electron and a proton have the same wave length. Which one of the following statements is correct about them?

Evidence for the wave nature of light cannot be obtained from

Iron

Boron

Potassium

Molybdenum

Azotobacter

Spirogyra

Nostoc

Anabaena

dextron

dextrin

Acetobacter

dextran

Efferent arteriole and renal vein

Renal artery and afferent arteriole

Afferent arteriole and efferent Arteriole

Efferent arteriole and peritubular capillaries

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