Vapour is injected at a uniform rate in a closed vessel which was initially evacuated. The pressure in the vessel

1.  increases continuously

2.  decreases continuously

3.  first increases and then decreases

4.  first increases and then becomes constant.

A vessel A has volume V and a vessel B has volume 2V. Both contain some water which has a constant volume. The pressure in the space above water is p_a for vessel A and p_b for vessel B.

1.  p_a = p_b

2.  p_a = 2p_b

3.  p_b = 2p_a

4.  p_b = 4p_a

Water equivalent of a body is measured in

1.  kg

2.  calorie

3.  kelvin

4.  m³

When a hot liquid is mixed with a cold liquid, the temperature of the mixture

1.  first decreases then becomes constant

2.  first increases then becomes constant

3.  continuously increases

4.  is undefined for some time and then becomes nearly constant.

Which of the following pairs of physical quantities may be represented in the same unit ?

1.  heat and temperature

2.  temperature and mole

3.  heat and work

4.  specific heat and heat

Two bodies at different temperatures are mixed in a calorimeter. Which of the following quantities remains conserved ?

1.  sum of the temperatures of the two bodies

2.  total heat of the two bodies

3.  total internal energy of the two bodies

4.  internal energy of each body.

The mechanical equivalent of heat

1.  has the same dimension as heat

2.  has the same dimension as work

3.  has the same dimension as energy

4.  is dimensionless.

The heat capacity of a body depends on:

Choose the correct option:

The ratio of specific heat capacity to molar heat capacity of a body

(a) is a universal constant

(b) depends on the mass of the body

(c) depends on the molecular weight of the body

(d) is dimensionless

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3. (c) only 

4. (a) , (d)