Heat & Thermodynamics MCQs with Answers

When one mole of a substance is decomposed preferably as compared to evaporation then decomposition has _?

• A.Higher energy
• B.Low energy
• C.Equal energy
• D.No energy change

Heat application relieves all of the following except:

• A.Muscle spasm
• B.Stiffness of joints
• C.Muscular pain
• D.Contraction

In a diesel engine, what initiates the ignition process?

• A.Spark plug
• B.Compression
• C.Glow plug
• D.Fuel injection

Past Paper MCQ

A refrigerator works on the principle of ?

• A.Electromagnetic induction
• B.Thermodynamics
• C.Photoelectric effect
• D.Nuclear fission

Which law states that at constant temperature for a fixed mass, the absolute pressure and the volume of a gas are inversely proportional?

• A.Charles's Law
• B.Boyle's Law
• C.Gay-Lussac's Law
• D.Avogadro's Law

An object with particles close together and vibrating describes a _?

• A.Solid
• B.Liquid
• C.Gas
• D.Plasma

What does the onset temperature in a thermogravimetric analysis (TGA) curve indicate?

• A.The temperature at which the heating rate changes
• B.The temperature at which decomposition is complete
• C.The temperature at which the sample reaches maximum weight
• D.The temperature at which the sample starts to decompose

Who invented the electrical thermometer?

• A.Santorio
• B.Galileo Galilei
• C.Daniel Gabriel Fahrenheit
• D.Thomas Edison

What is the thing that goes up and comes down but does not move?

• A.Temperature
• B.Sun
• C.Balloon
• D.Cloud

Past Paper MCQ

Disorder of system

• A.Enthalpy
• B.Entropy
• C.Energy
• D.Equilibrium