Heat & Thermodynamics MCQs with Answers

Which thermal analytical technique is commonly used for studying the degradation kinetics of materials?

• A.Differential Scanning Calorimetry (DSC)
• B.Scanning Electron Microscopy (SEM)
• C.X-ray Diffraction (XRD)
• D.Thermogravimetric Analysis (TGA)

Adiabatic change occurs when the gas _?

• A.Compresses at constant pressure
• B.Expands at constant temperature
• C.Expands or compresses without heat exchange
• D.Expands or compresses with heat exchange

When you put a drop of ink into water, why is the colour of ink moving in the glass?

• A.Due to the motion of molecules of ink
• B.Due to the motion of molecules of water
• C.Due to gravity pulling the ink downward
• D.Due to a chemical reaction between ink and water

What causes fog on the glass when hot water tap is opened in a closed washroom?

• A.Evaporation
• B.Condensation
• C.Sublimation
• D.Precipitation

What is the ideal gas equation?

• A.PV = nRT
• B.PV = k (constant)
• C.Both A and B
• D.None of these

Who related temperature to the equilibrium constant?

• A.Gibbs
• B.Le Chatelier
• C.Arrhenius
• D.Van't Hoff

The term "Thermonuclear reaction" refers to the heat released in ?

• A.Fission
• B.Fusion
• C.Combustion
• D.Radioactive decay

Which one of the following is an insulator for electricity but a conductor for heat?

• A.Graphite
• B.Diamond
• C.Mica
• D.Glass

The garments used in space exploration can reduce body heat by ?

• A.From 20% upto 40%
• B.From 40% upto 60%
• C.From 60% upto 80%
• D.From 80% upto 100%

Diffusion is not a property of ?

• A.Solids
• B.Liquids
• C.Gases
• D.Both liquids and gases