BITSAT PYQs for Thermal Properties of Matter with Solutions: Practice BITSAT Previous Year Questions

Updated on - Dec 11, 2025

Thermal Properties of Matter is an important topic in the Physics section in BITSAT exam. Practising this topic will increase your score overall and make your conceptual grip on BITSAT exam stronger.

This article gives you a full set of BITSAT PYQs for Thermal Properties of Matter with explanations for effective preparation. Practice of BITSAT Physics PYQs including Thermal Properties of Matter questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.

BITSAT PYQs for Thermal Properties of Matter with Solutions

1.
A body which is initially at rest at a height $ R $ above the surface of the Earth of radius $ R $, falls freely towards the Earth. The velocity on reaching the surface of the Earth is:
- $ \sqrt{2gR} $
- $ \sqrt{gR} $
- $ \sqrt{\frac{3}{2} gR} $
- $ \sqrt{4gR} $
View Solution
2.
A body is thrown with a velocity of $ 9.8 $ m/s making an angle of $ 30^\circ $ with the horizontal. It will hit the ground after a time:
- $ 3.0 $ s
- $ 2.0 $ s
- $ 1.5 $ s
- $ 1.0 $ s
View Solution
3.
The distance between the Sun and Earth is $ R $. The duration of a year if the distance between the Sun and Earth becomes $ 3R $ will be:
- $ \sqrt{3} $ years
- $ 3 $ years
- $ 9 $ years
- $ 3\sqrt{3} $ years
View Solution
4.
Inside a solenoid of radius $ 0.5 $ m, the magnetic field is changing at a rate of $ 50 \times 10^{-6} $ T/s. The acceleration of an electron placed at a distance of $ 0.3 $ m from the axis of the solenoid will be:
- $ 23 \times 10^6 $ m/s$^2$
- $ 26 \times 10^6 $ m/s$^2$
- $ 1.3 \times 10^9 $ m/s$^2$
- $ 26 \times 10^9 $ m/s$^2$
View Solution
5.
In an $ S_{\text{N}2} $ substitution reaction of the type: \[ R - Br + Cl^- \longrightarrow R - Cl + Br^- \]
Which one of the following has the highest relative rate?
- CH₃-CH-CH₂Br (with a CH₃ group attached to the second carbon)
- CH₃-CH(CBr)-CH₃ (with two CH₃ groups attached to the second carbon)
- CH₃CH₂Br
- CH₃CH₂CH₂Br
View Solution
6.
A 1 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at 27\degree C is (Assume ideal behaviour of gases):
- 8.6 atm
- 2.2 atm
- 4.2 atm
- 6.1 atm
View Solution
7.
A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as:
$ x = t^3 - 6t^2 + 20t + 15 $.
The velocity of the body when its acceleration becomes zero is:
- $ 6 $ m/s
- $ 10 $ m/s
- $ 8 $ m/s
- $ 4 $ m/s
View Solution
8.
In a mixture of gases, the average number of degrees of freedom per molecule is 6. The RMS speed of the molecule of the gas is $ c $. Then the velocity of sound in the gas is:
- $ \frac{c}{\sqrt{3}} $
- $ \frac{c}{\sqrt{2}} $
- $ \frac{2c}{3} $
- $ \frac{3c}{3} $
View Solution
9.
The kinetic energy of a satellite in its orbit around Earth is $ E $. What should be the kinetic energy of the satellite to escape Earth's gravity?
- $ 4E $
- $ 2E $
- $ \sqrt{2}E $
- $ E $
View Solution
10.
The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then, the potential of each single drop was:
- 10 V
- 7.5 V
- 5 V
- 2.5 V
View Solution
11.
A photon of wavelength $ 3000 $ Å strikes a metal surface. The work function of the metal is $ 2.13 $ eV. What is the kinetic energy of the emitted photoelectron? ($ h = 6.626 \times 10^{-34} $ Js)
- 4.0 eV
- 3.0 eV
- 2.0 eV
- 1.0 eV
View Solution
12.
The range of a projectile projected at an angle of $ 15^\circ $ with the horizontal is $ 50 $ m. If the projectile is projected with the same velocity at an angle of $ 45^\circ $, then its range will be:
- $ 50 $ m
- $ 50\sqrt{2} $ m
- $ 100 $ m
- $ 100\sqrt{2} $ m
View Solution
13.
A person of mass $ 60 $ kg is inside a lift of mass $ 940 $ kg. The lift starts moving upwards with an acceleration of $ 1.0 $ m/s$ ^2 $. If $ g = 10 $ m/s$ ^2 $, the tension in the supporting cable is:
- $ 8600 $ N
- $ 9680 $ N
- $ 11000 $ N
- $ 1200 $ N
View Solution
14.
A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:
- $0.9\%$
- $0.12\%$
- $1.6\%$
- $0.5\%$
View Solution
15.
A ball falling freely from a height of $ 4.9 $ m/s hits a horizontal surface. If $ e = \frac{3}{4} $, then the ball will hit the surface the second time after:
- $ 1.0 $ s
- $ 1.5 $ s
- $ 2.0 $ s
- $ 3.0 $ s
View Solution

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BITSAT PYQs for Thermal Properties of Matter with Solutions: Practice BITSAT Previous Year Questions

BITSAT PYQs for Thermal Properties of Matter with Solutions

1.
A body which is initially at rest at a height \( R \) above the surface of the Earth of radius \( R \), falls freely towards the Earth. The velocity on reaching the surface of the Earth is:

2.
A body is thrown with a velocity of \( 9.8 \) m/s making an angle of \( 30^\circ \) with the horizontal. It will hit the ground after a time:

3.
The distance between the Sun and Earth is \( R \). The duration of a year if the distance between the Sun and Earth becomes \( 3R \) will be:

4.
Inside a solenoid of radius \( 0.5 \) m, the magnetic field is changing at a rate of \( 50 \times 10^{-6} \) T/s. The acceleration of an electron placed at a distance of \( 0.3 \) m from the axis of the solenoid will be:

5.
In an \( S_{\text{N}2} \) substitution reaction of the type: \[ R - Br + Cl^- \longrightarrow R - Cl + Br^- \]
Which one of the following has the highest relative rate?

6.
A 1 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at 27\degree C is (Assume ideal behaviour of gases):

7.
A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as:
$ x = t^3 - 6t^2 + 20t + 15 $.
The velocity of the body when its acceleration becomes zero is:

8.
In a mixture of gases, the average number of degrees of freedom per molecule is 6. The RMS speed of the molecule of the gas is \( c \). Then the velocity of sound in the gas is:

9.
The kinetic energy of a satellite in its orbit around Earth is \( E \). What should be the kinetic energy of the satellite to escape Earth's gravity?

10.
The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then, the potential of each single drop was:

11.
A photon of wavelength \( 3000 \) Å strikes a metal surface. The work function of the metal is \( 2.13 \) eV. What is the kinetic energy of the emitted photoelectron? (\( h = 6.626 \times 10^{-34} \) Js)

12.
The range of a projectile projected at an angle of \( 15^\circ \) with the horizontal is \( 50 \) m. If the projectile is projected with the same velocity at an angle of \( 45^\circ \), then its range will be:

13.
A person of mass \( 60 \) kg is inside a lift of mass \( 940 \) kg. The lift starts moving upwards with an acceleration of \( 1.0 \) m/s\( ^2 \). If \( g = 10 \) m/s\( ^2 \), the tension in the supporting cable is:

14.
A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:

15.
A ball falling freely from a height of \( 4.9 \) m/s hits a horizontal surface. If \( e = \frac{3}{4} \), then the ball will hit the surface the second time after:

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BITSAT PYQs for Thermal Properties of Matter with Solutions

1.A body which is initially at rest at a height \( R \) above the surface of the Earth of radius \( R \), falls freely towards the Earth. The velocity on reaching the surface of the Earth is:

2.A body is thrown with a velocity of \( 9.8 \) m/s making an angle of \( 30^\circ \) with the horizontal. It will hit the ground after a time:

3.The distance between the Sun and Earth is \( R \). The duration of a year if the distance between the Sun and Earth becomes \( 3R \) will be:

4.Inside a solenoid of radius \( 0.5 \) m, the magnetic field is changing at a rate of \( 50 \times 10^{-6} \) T/s. The acceleration of an electron placed at a distance of \( 0.3 \) m from the axis of the solenoid will be:

5. In an \( S_{\text{N}2} \) substitution reaction of the type: \[ R - Br + Cl^- \longrightarrow R - Cl + Br^- \] Which one of the following has the highest relative rate?

6.A 1 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at 27\degree C is (Assume ideal behaviour of gases):

7.A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as: $ x = t^3 - 6t^2 + 20t + 15 $. The velocity of the body when its acceleration becomes zero is:

8.In a mixture of gases, the average number of degrees of freedom per molecule is 6. The RMS speed of the molecule of the gas is \( c \). Then the velocity of sound in the gas is:

9.The kinetic energy of a satellite in its orbit around Earth is \( E \). What should be the kinetic energy of the satellite to escape Earth's gravity?

10.The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then, the potential of each single drop was:

11.A photon of wavelength \( 3000 \) Å strikes a metal surface. The work function of the metal is \( 2.13 \) eV. What is the kinetic energy of the emitted photoelectron? (\( h = 6.626 \times 10^{-34} \) Js)

12.The range of a projectile projected at an angle of \( 15^\circ \) with the horizontal is \( 50 \) m. If the projectile is projected with the same velocity at an angle of \( 45^\circ \), then its range will be:

13.A person of mass \( 60 \) kg is inside a lift of mass \( 940 \) kg. The lift starts moving upwards with an acceleration of \( 1.0 \) m/s\( ^2 \). If \( g = 10 \) m/s\( ^2 \), the tension in the supporting cable is:

14.A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:

15.A ball falling freely from a height of \( 4.9 \) m/s hits a horizontal surface. If \( e = \frac{3}{4} \), then the ball will hit the surface the second time after:

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1.
A body which is initially at rest at a height \( R \) above the surface of the Earth of radius \( R \), falls freely towards the Earth. The velocity on reaching the surface of the Earth is:

2.
A body is thrown with a velocity of \( 9.8 \) m/s making an angle of \( 30^\circ \) with the horizontal. It will hit the ground after a time:

3.
The distance between the Sun and Earth is \( R \). The duration of a year if the distance between the Sun and Earth becomes \( 3R \) will be:

4.
Inside a solenoid of radius \( 0.5 \) m, the magnetic field is changing at a rate of \( 50 \times 10^{-6} \) T/s. The acceleration of an electron placed at a distance of \( 0.3 \) m from the axis of the solenoid will be:

5.
In an \( S_{\text{N}2} \) substitution reaction of the type: \[ R - Br + Cl^- \longrightarrow R - Cl + Br^- \]
Which one of the following has the highest relative rate?

6.
A 1 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at 27\degree C is (Assume ideal behaviour of gases):

7.
A particle is moving in a straight line. The variation of position $ x $ as a function of time $ t $ is given as:
$ x = t^3 - 6t^2 + 20t + 15 $.
The velocity of the body when its acceleration becomes zero is:

8.
In a mixture of gases, the average number of degrees of freedom per molecule is 6. The RMS speed of the molecule of the gas is \( c \). Then the velocity of sound in the gas is:

9.
The kinetic energy of a satellite in its orbit around Earth is \( E \). What should be the kinetic energy of the satellite to escape Earth's gravity?

10.
The potential of a large liquid drop when eight liquid drops are combined is 20 V. Then, the potential of each single drop was:

11.
A photon of wavelength \( 3000 \) Å strikes a metal surface. The work function of the metal is \( 2.13 \) eV. What is the kinetic energy of the emitted photoelectron? (\( h = 6.626 \times 10^{-34} \) Js)

12.
The range of a projectile projected at an angle of \( 15^\circ \) with the horizontal is \( 50 \) m. If the projectile is projected with the same velocity at an angle of \( 45^\circ \), then its range will be:

13.
A person of mass \( 60 \) kg is inside a lift of mass \( 940 \) kg. The lift starts moving upwards with an acceleration of \( 1.0 \) m/s\( ^2 \). If \( g = 10 \) m/s\( ^2 \), the tension in the supporting cable is:

14.
A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:

15.
A ball falling freely from a height of \( 4.9 \) m/s hits a horizontal surface. If \( e = \frac{3}{4} \), then the ball will hit the surface the second time after: