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NEET Mock Test - 13 - NEET MCQ


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30 Questions MCQ Test NEET Mock Test Series - Updated 2025 Pattern - NEET Mock Test - 13

NEET Mock Test - 13 for NEET 2025 is part of NEET Mock Test Series - Updated 2025 Pattern preparation. The NEET Mock Test - 13 questions and answers have been prepared according to the NEET exam syllabus.The NEET Mock Test - 13 MCQs are made for NEET 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NEET Mock Test - 13 below.
Solutions of NEET Mock Test - 13 questions in English are available as part of our NEET Mock Test Series - Updated 2025 Pattern for NEET & NEET Mock Test - 13 solutions in Hindi for NEET Mock Test Series - Updated 2025 Pattern course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt NEET Mock Test - 13 | 180 questions in 180 minutes | Mock test for NEET preparation | Free important questions MCQ to study NEET Mock Test Series - Updated 2025 Pattern for NEET Exam | Download free PDF with solutions
NEET Mock Test - 13 - Question 1
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A piece of metal weighs 45 g in air and 25 g in a liquid of density 1.5 x 103 kg-m-3 kept at 30°C. When the temperature of the liquid is raised to 40°C, the metal piece weighs 27 g. The density of liquid at 40°C is 1.25 x 103 kg-m-3. The coefficient of linear expansion of metal is

Detailed Solution for NEET Mock Test - 13 - Question 1
The volume of the metal at 30°C is

Similarly, volume of metal at 40°C is

= 14.40 cm3

= 8.03 x 10-3/ °C

Coefficient of linear expansion of the metal is

≈ 2.6 x 10-3/°C

NEET Mock Test - 13 - Question 2
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A particle is released from rest from a tower of height 3h. The ratio of time taken to fall equal heights hh i.e., t1 : t2 : t3 is

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NEET Mock Test - 13 - Question 3
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An impulse J is applied on a ring of mass m along a line passing through its centre O. The ring is placed on a rough horizontal surface. The linear velocity of centre of ring once it starts rolling without slipping is

Detailed Solution for NEET Mock Test - 13 - Question 3
Let v be the velocity of COM of ring just

after the impulse is applied and v' its velocity when pure rolling starts. Angular velocity ω of the ring at this instant will be

ω = v’/r

From impulse = change in linear momentum

We have,

J = mv

v = J/m ...(1)

Between the two positions shown in the figure force of friction on the ring acts backwards. Angular momentum of the ring about the bottom most point will remain conserved.

∴ Li = Lf

mvr = mv' r + lω

NEET Mock Test - 13 - Question 4
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The rms value of the electric field of the light coming from the Sun is 720 N C−1. The average total energy density of the electromagnetic wave is
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NEET Mock Test - 13 - Question 5
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Three identical blocks of masses m = 2 kg are drawn by a force F = 10.2 N on a frictionless surface, then what is the tension (in N) in the string between the blocks B and C?
Detailed Solution for NEET Mock Test - 13 - Question 5

NEET Mock Test - 13 - Question 6
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In Young's double slit experiment, the 10th maximum of wavelength λ1 is at a distance of y1 from the central maximum. When the wavelength of the source is changed to λ2, 5th maximum is at a distance of y2 from its central maximum. The ratio y1/y2 is
Detailed Solution for NEET Mock Test - 13 - Question 6
Position of fringe from central maxima

Given, n = 10

For second source

NEET Mock Test - 13 - Question 7
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Three capacitors C1 = 3 μF, C2 = 6 μF and C3 = 12 μF are joined in series. This series combination is connected to a 14 volt source. The P.D across the plates of capacitor C2 is
Detailed Solution for NEET Mock Test - 13 - Question 7
Let CS is the effective capacitance.

Charge on C2 = Charge on CS

NEET Mock Test - 13 - Question 8
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In the circuit shown below, C1 = 3 μF ; C2 = 6 μF ; C3 = 6 μF ; C4 = 12 μF and C5 = 9 μF. The total energy stored in these five capacitors is
Detailed Solution for NEET Mock Test - 13 - Question 8
The Wheatstone bridge is in the balanced condition.

Ceff = 6 μF

Total energy stored,

NEET Mock Test - 13 - Question 9
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In the infinite ladder network shown below, if R = 1.235 Ω, then the effective resistance between the points a and b (approximately) is (√5 = 2.235)
Detailed Solution for NEET Mock Test - 13 - Question 9
Let Re is the effective resistance between a and b. The equivalent circuit is

NEET Mock Test - 13 - Question 10
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In the circuit shown below, if the tap key K is pressed at time t = 0, then which of the following statements is false?
Detailed Solution for NEET Mock Test - 13 - Question 10
At time t = 0; capacitor offer zero opposition.

At time t = ∞, capacitor offers infinite opposition.

P.D. across 1000 Ω resistor = 2 x 10-3 x 1000 = 2 V

∴ Charge on 6 μF capacitor = 6 x 2 = 12 μC

NEET Mock Test - 13 - Question 11
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The electrostatic field lines
Detailed Solution for NEET Mock Test - 13 - Question 11
Electrostatic lines of force do not form closed loops, as electrostatic field is a conservative field.
NEET Mock Test - 13 - Question 12
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The electric field decreases most rapidly, with distance for
Detailed Solution for NEET Mock Test - 13 - Question 12
Electric field due to short dipole varies as

For point charge

For line charge

For large sheet E ∝ r°

NEET Mock Test - 13 - Question 13
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Eight identical spherical liquid drops each charged to potential of 2 volt. They coalesce to make one big spherical liquid drop, whose potential is
Detailed Solution for NEET Mock Test - 13 - Question 13
V' = n2l3V = 82/3 x 2 volt

= 4 x 2 volt

= 8 volt

NEET Mock Test - 13 - Question 14
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A point charge Q is located at a distance R/2 From the centre of an uncharged conducting spherical shell as shown in below figure. The electric field at a distance 3R from the point charge is
Detailed Solution for NEET Mock Test - 13 - Question 14

The field at point P due to charge Q within the shell and charge induced on the inner surface of the shell is zero. The field at point P is only, due to the induced charge on the outer surface of shell.

NEET Mock Test - 13 - Question 15
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In the circuit shown, the effective resistance between the points a and b is
Detailed Solution for NEET Mock Test - 13 - Question 15
By symmetry, the given circuit can be drawn as

NEET Mock Test - 13 - Question 16
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Directions : Each of these questions contain two statements, Assertion and Reason. Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below.

Assertion : The change in kinetic energy of a particle is equal to the work done on it by the net force.

Reason: Change in kinetic energy of particle is equal to work done only in case of a system of one particle.
Detailed Solution for NEET Mock Test - 13 - Question 16

The Assertion is correct. The change in kinetic energy of a particle is equal to the work done on it by the net force. This is a fundamental principle of classical mechanics.

However, the Reason is incorrect. The change in kinetic energy of a particle is equal to the work done on it by the net force, regardless of whether the particle is part of a system of one or many particles. The reason provided is not a correct explanation for the assertion.

NEET Mock Test - 13 - Question 17
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The current through the 2 Ω resistor in the circuit shown below is
Detailed Solution for NEET Mock Test - 13 - Question 17

Since b is at higher potential then a, current flows from b to a.

NEET Mock Test - 13 - Question 18
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Consider the following two statements :

Statements (A): The linear momentum of a particle is independent of the frame of reference.

Statements (B): The kinetic energy of a particle is independent of the frame of reference.
Detailed Solution for NEET Mock Test - 13 - Question 18
If we observe the decay from the frame of reference in which the centre of mass is at rest, the motion of the particles involved in the decay looks particularly simple; the product particles move back to back with their centre of mass remaining at rest
NEET Mock Test - 13 - Question 19
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During the adiabatic expansion of two moles of a gas, the internal energy is found to decrease by 2 J. The work done during the process on the gas will be equal to
Detailed Solution for NEET Mock Test - 13 - Question 19
In adiabatic expansion, Q = 0

According to first law of thermodynamics,

ΔU = Q - W

Here, ΔU is internal energy and W is work done.

ΔU = -W (Because Q = 0)

Thus, internal energy is decreased by the amount equivalent to the work done by the gas in expansion.

Hence, work done on the gas is –2 J.

NEET Mock Test - 13 - Question 20
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An organic compound A, upon reacting with NH3, gives B. On heating, B gives C. C, in presence of KOH, reacts with Br2 to give CH3CH2NH2. A is
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NEET Mock Test - 13 - Question 21
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Detailed Solution for NEET Mock Test - 13 - Question 21

are tautomers as they involve the exchange of proton.

NEET Mock Test - 13 - Question 22
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Choose the correct statement.
Detailed Solution for NEET Mock Test - 13 - Question 22
In order to link the alien DNA, the vector needs to have very few, preferably single, recognition site for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning.
NEET Mock Test - 13 - Question 23
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At what phase of meiosis are there two cells, each with sister chromatids aligned at the spindle equator?
Detailed Solution for NEET Mock Test - 13 - Question 23
In metaphase II, the centromeres contain two kinetochores that attach to spindle fibers from the centrosomes at opposite poles.

But during the metaphase-I stage, the homologous pairs of chromosomes align themselves on the metaphasic plate.

NEET Mock Test - 13 - Question 24
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The phytohormone responsible for increasing the shelf life of cut flowers and vegetables also helps in
Detailed Solution for NEET Mock Test - 13 - Question 24
Apical dominance has been explained as due to the action of auxin present in the main apex. This view is amply supported by an experiment, where if the stem tip is cut off, the axillary buds found below sprout immediately. Instead, if an agar block containing auxin placed over the decapitated stem, the axillary buds remain suppressed. It is clear from the above experiment, that auxin present in the main apex somehow inhibits the growth of the axillary bud. The severity of apical dominance is greater on the axillary buds present nearer to the main apex. Nevertheless, apical dominance exerted by the auxins can be overcome by the application of cytokinin to axillary buds. This is because cytokinin induces cytokinesis.
NEET Mock Test - 13 - Question 25
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Statement-A: In animals, mitotic cell division is seen in the diploid somatic cells.

Statement-B: The plants can show mitotic divisions in both haploid & diploid cells.
Detailed Solution for NEET Mock Test - 13 - Question 25
In animals, mitotic cell division is seen in the diploid somatic cells and the plants can show mitotic divisions in both haploid & diploid cells.
NEET Mock Test - 13 - Question 26
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In C4 plants, photorespiration does not occur because
Detailed Solution for NEET Mock Test - 13 - Question 26
In bundle sheath cells. RuBisCO has higher concentration of CO2.
NEET Mock Test - 13 - Question 27
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Which of the following options about Compositae family is incorrect?
Detailed Solution for NEET Mock Test - 13 - Question 27
Hypogynous flowers are not present in Compositae. In epigynous flowers, the hypanthium is fused to the gynoecium and the free parts of the sepals, petals and stamens appear to be attached to the top of the gynoecium as in Compositae family.
NEET Mock Test - 13 - Question 28
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Read the following statements A and B and choose the correct answer.

Statement-A : Movement is one of the significant features of living beings.

Statement-B : Flying is a form of locomotory movements in most of the birds, insects and certain mammals.
Detailed Solution for NEET Mock Test - 13 - Question 28

Statement A is correct. Movement is a significant feature of living beings. All living organisms, from the simplest single-celled organisms to the most complex multicellular organisms, exhibit some form of movement.

Statement B is also correct. Flying is a form of locomotory movement in birds, insects, and some mammals. Locomotory movement refers to the movement of an organism from one place to another. In the case of flying organisms, such as birds, insects, and bats, they move through the air using their wings to generate lift and thrust.

Therefore, both statements A and B are correct.

NEET Mock Test - 13 - Question 29
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Which of the following is a pair of neutral amino acids?
Detailed Solution for NEET Mock Test - 13 - Question 29
The amino acids having one amino and one carboxylic group are called neutral amino acids. Examples: Glycine and alanine.

Glycin

Alanine

NEET Mock Test - 13 - Question 30
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Primary consumers are in greater number than producers in
Detailed Solution for NEET Mock Test - 13 - Question 30
In pyramid of tree ecosystem, consumers are in greater number than producers. Thus, inverted pyramid of number is obtained.

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