1st Year Physics Chapter 6 TestHeat and Thermodynamics

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. At constant temperature, the kinetic theory of gases leads to:

   1. Boyle's law

   2. Charles law

   3. Avogadro's law

   4. Joseph Lussat's law

2. The Sl unit of product of pressure and volume is:

   1. Watt

   2. Joule

   3. Pascal

   4. Nm

3. The device which operates based on the second law of thermodynamics is:

   1. Thermometer

   2. Voltmeter

   3. Barometer

   4. Heat engine

4. The direction of flow of heat between two bodies in thermal contact is determined by:

   1. Internal energies

   2. Kinetic energies

   3. Potential energies

   4. Atmospheric pressure

5. The formula connecting the pressure and volume of a gas undergoing an adiabatic change is:

   1. PC=constant

   2. PV₁=constant

   3. PV^-1=constant

   4. None

6. At which of the following temperature, a body has maximum internal energy:

   1. -270^o

   2. 0 k

   3. 273 k

   4. - 273 k

7. When a gas expands against an external pressure, the work done by the gas is:

   1. Positive

   2. Negative

   3. Zero

   4. Dependent on temperature

8. The temperature scale which is independent of nature of substance is:

   1. Thermodynamic scale

   2. Centrigrade scale

   3. Fahrenheit scale

   4. Rankine scale

9. The work done in isochoric process is:

   1. Constant

   2. Variable

   3. Zero

   4. Depend on condition

10. The change in internal energy defined as:

    1. Q-W

    2. Q-T

    3. Q+P

    4. Q-P