If a substance is heated or cooled, the change in mass of that substance is

(a)

positive

(b)

negative

(c)

zero

(d)

none of the above

Temperature is the average ______ of the molecules of a substance

(a)

difference in K.E and P.E

(b)

sum of P.E and K.E

(c)

difference in T.E and P.E

(d)

difference in K.E and T.E

Which of the following has the fastest process of heat transfer?

(a)

Conduction

(b)

convection

(c)

Radiation

(d)

all the above

In which process heat is transferred directly from one molecule to other?

(a)

conduction

(b)

convection

(c)

Radiation

(d)

all the above

SI unit of temperature is

(a)

Celsius

(b)

Fahrenheit

(c)

Kelvin

(d)

None

Change in volume of a solid during heating is

(a)

Linear expansion

(b)

Superficial expansion

(c)

Cubical expansion

(d)

apparent expansion

At constant temperature volume is inversely proportional to pressure of a gas is known as

(a)

Boyle's law

(b)

Charles

(c)

Avogadro

(d)

None

If the atoms or molecules of a gas do not interact with each other, then the gas is said to be  ______.

(a)

a real gas

(b)

an ideal gas

(c)

a noble gas

(d)

a rare gas

Absolute scale is also called as ______

(a)

Kelvin scale

(b)

Celsius scale

(c)

Centigrade scale

(d)

Fahrenheit scale

Thermal conduction in metal is due to

(a)

Free electrons

(b)

bound electrons

(c)

Vibration of molecules

(d)

vibration of atoms