Thermodynamics in General Science : Practice MCQ Questions & Answers with Explanations

If the absolute temperature of a radiating object is doubled, by what factor does the rate of energy emission change?

Which mechanism of heat transfer is involved in heat flow from Sun to Earth?

Which mechanism of heat transfer is involved in heating a pot with water on a stove?

The process of heat transfer by the movement of mass from one place to another is called:

When we touch a piece of metal and a piece of wood that are placed in the same room, the piece of metal feels much colder than the piece of wood. This happens because of the difference in:

The process of heat transfer from object to another because of molecular motion and interaction is called:

A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even without a direct contact with the liquid. This phenomenon can be explained by:

Mechanical equivalent is associated with:

An ideal gas with an internal energy U initially at 0 °C is heated to 273 °C. What is the new internal energy in terms of U?

A sample of ideal gas has an internal energy U and is then compressed to one-half of its original volume while the temperature stays the same. What is the new internal energy of the ideal gas in terms of U?

Kinetic Theory is based on an ideal gas model. The following statements about the ideal gas are true EXCEPT:

The average molecular kinetic energy of a gas depends on:

The absolute temperature of an ideal diatomic gas is quadrupled. What happens to the average speed of molecules?

A container with rigid walls filled with a sample of ideal gas. The absolute temperature of the gas is doubled. What happens to the pressure of the gas?

A container filled with a sample of an ideal gas at the pressure of 1.5 atm. The gas is compressed isothermally to one-fourth of its original volume. What is the new pressure of the gas?

Which of the following temperature scales doesn't have negative numbers?

An aluminum plate has a circular hole. If the temperature of the plate increases, what happens to the size of the hole?

What is the name of the following statement: "When two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other"?