MCQ (1 Marks)

MCQ 1511 Mark

Process of change of state from gaseous state to liquid state is called:

A
Freezing
B
Sublimation
C
Boiling
✓
Condensation

Answer

Correct option: D.

Condensation

Condensation is the change of a substance from its gaseous form into its liquid state.

View full question & answer→

MCQ 1521 Mark

A thermometer which do not use mercury is known as:

A
Clinical thermometer
B
Laboratory thermometer
✓
Digital thermometer
D
None of these

Answer

Correct option: C.

Digital thermometer

Digital thermometer do not use mercury.

View full question & answer→

MCQ 1531 Mark

The kinetic energy of molecules of a gas increases with:

A
Fall in temperature
✓
Rise in temperature
C
Decrease in pressure
D
All of the above

Answer

Correct option: B.

Rise in temperature

Kinetic energy increases with rise in temperature.

View full question & answer→

MCQ 1541 Mark

The transfer of heat which does not require any medium is called.

A
Conduction.
B
Convection.
✓
Radiation.
D
Vaporization.

Answer

Correct option: C.

Radiation.

View full question & answer→

MCQ 1551 Mark

Heat is transmitted from higher to lower temperature through actual mass motion of the molecules in:

A
Conduction
✓
Convection
C
Radiation
D
None of these

Answer

Correct option: B.

Convection

Conduction: It is the mechanism of heat transfer in which heat is transfer takes place by vibration of molecules and molecules will not leave their original position.
Convection: It is a mode of heat transfer by actual motion of mass. It is possible only in fluids.
Radiation: It does not require any medium to transfer heat. It transfers heat by electromagnetic waves

View full question & answer→

MCQ 1561 Mark

Bodies transmitting heat via radiation: