If heat is supplied to an ideal gas in an isothermal process,

A gas is contained in a metallic cylinder fitted with a piston. The piston is suddenly moved in to compress the gas and is maintained at this position. As time passes the pressure of the gas in the cylinder

1.  increases

2.  decreases

3.  remains constant

4.  increases or decreases depending on the nature of the gas

In a process on a system, the initial pressure and volume are equal to the final pressure and volume.

(a) The initial temperature must be equal to the final temperature.

(b) The initial internal energy must be equal to the final internal energy.

(c) The net heat given to the system in the process must be zero.

(d) The net work done by the system in the process must be zero

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d) 

The internal energy of an ideal gas decreases by the same amount as the work done by the system.

(a) The process must be adiabatic.

(b) The process must be isothermal.

(c) The process must be isobaric.

(d) The temperature must decrease

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d) 

In an isothermal process on an ideal gas, the pressure increases by 0.5%. The volume decreases by about

1.  0.25%

2.  0.5%

3.  0.7%

4.  1%.

In an adiabatic process on a gas with y = 1.4, the pressure is increased by 0.5%. The volume decreases by about

1.  0.36%

2.  0.5%

3.  0.7%

4.  1%.

Two samples A and B are initially kept in the same state. The sample A is expanded through an adiabatic process and the sample B through an isothermal process. The final volumes of the samples are the same. The final pressures in A and B are p_A and p_B respectively.

1.  P_A > P_B

2.  P_A = P_B

3.  P_A < P_B

4.  The relation between p_A and p_B cannot be deduced.

Let T_a and T_b be the final temperatures of the samples A and B respectively in the previous question.

1.  T_a < T_b

2.  T_a = T_b

3.  T_a > T_b

4.  The relation between T_a and T_b cannot be deduced.
Previous Question: Two samples A and B are initially kept in the same state. The sample A is expanded through an adiabatic process and the sample B through an isothermal process. The final volumes of the samples are the same.

A gas kept in a container of finite conductivity is suddenly compressed. The process

a.  must be very nearly adiabatic

b.  must be very nearly isothermal

c.  may be very nearly adiabatic

d.  may be very nearly isothermal

Choose the correct option 

1. (a) , (b) 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d) 

Let Q and W denote the amount of heat given to an ideal gas and the work done by it in an isothermal process.

(a) Q = 0

(b) W = 0

(o) Q  ≠ W

(d) Q = W

Choose the correct option 

1. (a) , (b) 

2. (b) , (c) 

3.  (d) only

4. (a) , (d)