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

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

Increase in area due to heating is called

(a)

Linear expansion

(b)

Superficial expansion

(c)

Cubical expansion

(d)

real expansion

Fundamental laws of gases are

(a)

Boyle's law

(b)

Charles's law

(c)

Avogadro

(d)

all the above

Gas laws state the relationship between _____ properties of gas.

(a)

pressure

(b)

volume

(c)

Temperature & mass

(d)

all the above

The unit of coefficient of real expansion is

(a)

K

(b)

°C

(c)

K^-1

(d)

°F

The degree of hotness or coldness of a body is called _____

(a)

Energy

(b)

Thermal energy

(c)

Temperature

(d)

Heat capacity

The amount of heat energy required to rise the temperature of 1gram of water through 1⁰C is _____

(a)

One kilo calorie

(b)

One joule

(c)

One kelvin

(d)

One caloric