Thermodynamics

Zeroth law of thermodynamics is:

• Kinetic energy of molecules of a gas is zero

• Ideal gas does not contain molecules

• If two systems are thermal equilibrium third one is also in equilibrium

• Absolute zero temperature cannot be obtained

Transfer of heat from low temperature to high temperature is

• None of these

• Possible by doing some external work

• Possible by keeping both the bodies in contact

• Impossible

Tags

NGSS.MS-PS3-3

An adiabatic process occurs at constant

• Temperature

• pressure

• heat

• none of these

The physics of the refrigerator closely resembles the

• Ice formation

• Heat engine

• Vapour compression machin

• vaporization of water

Tags

NGSS.HS-PS3-3

NGSS.HS-PS3-4

---------------is intensive variable

• area

• entropy

• temperature

• volume

In a reversible adiabatic process, entropy

• increases

• decreases

• remains unchanged

• none of these

Entropy remains constant in

• adiabatic process

• isothermal process

• isochoric process

• isolated process

A piece of ice is added to water in a cup. The entropy

• decreased

• increased

• no change

• decreases then increases.

Tags

NGSS.MS-PS1-4

Human body is a __________________ system

• open

• closed

• isolated

Tags

NGSS.MS-LS1-3

NGSS.MS-LS2-3

Correct Meyer's relation

• Cp-Cv = R

• Cv-Cp = R

• Cv+Cp = R