Heat & Thermodynamics MCQs with Answers

The increase in volume of water as its temperature is lowered from 4°C to 0°C is called _?

• A.Anomalous expansion of water
• B.Peculiar behaviour
• C.Thermal contraction
• D.Supercooling

The graph of Boyle's law is called ?

• A.Isobar
• B.Isochore
• C.Isothermal
• D.Adiabatic

Gas can be converted into liquid by?

• A.Increasing temperature only
• B.Increasing pressure
• C.Decreasing temperature
• D.Both b and c

The R.M.S. speed of molecules of a gas at 100°C is v. The temperature at which the R.M.S. speed will be 3v is ?

• A.3084°C
• B.3357°C
• C.273°C
• D.900°C

The melting point of ice at normal atmospheric pressure is ?

• A.0 °C
• B.4 °C
• C.-4 °C
• D.100 °C

Which of the following expands on heating?

• A.Solids only
• B.Liquids only
• C.Gases only
• D.All of these

The change in Entropy is zero for _?

• A.Reversible adiabatic processes
• B.Irreversible adiabatic processes
• C.Reversible isothermal processes
• D.Irreversible isothermal processes

The temperature where kinetic energy of gas molecules become zero is known as?

• A.Boyle temperature
• B.Critical temperature
• C.Absolute zero temperature
• D.Inversion temperature

At equilibrium at a specific temperature, the pressure exerted by the liquid is called ?

• A.Atmospheric pressure
• B.Osmotic pressure
• C.Vapour pressure
• D.Hydrostatic pressure

When the pressure is 1520 torr, the density of oxygen gas will be _?

• A.32/RT
• B.64/RT
• C.16/RT
• D.128/RT