# Topic: Thermodynamics and Thermochemistry

1

Q: (a) :  A
(b) :  B
(c) :  C
(d) :  D

Q: (a) :  A
(b) :  B
(c) :  C
(d) :  D

Explanation:

All are the correct statements.

Q:

A Beckmann thermometer is used to measure

(a) :  High temperature
(b) :   Low temperature
(c) :  Normal temperature
(d) :   All temperature

Explanation:

Backmann thermometer is used to measure low temperature.

Q:

Heat of reaction at constant volume is measured in the apparatus

(a) :  Bomb calorimeter
(b) :  Calorimeter
(c) :  Pyknometer
(d) :  Pyrometer

Explanation:

Bomb calorimeter is used to measure heat of reaction.

Q:

The heat required to raise the temperature of a body by 1 K is called

(a) :  Specific heat
(b) :  Thermal capacity
(c) :   Water equivalent
(d) :   None of these

Explanation:

Heat required to rise the temperature of a body by 1K called thermal capacity of the body.

Q:

In thermodynamics, a process is called reversible when

(a) :  Surroundings and system change into each other
(b) :  There is no boundary between system and surroundings
(c) :  The surroundings are always in equilibrium with the system
(d) :  The system changes into the surroundings spontaneously

Answer:  The surroundings are always in equilibrium with the system
Explanation:

Thermodynamics is a reversible process in which surroundings are always equilibrium with system.

Q: (a) :  A
(b) :  B
(c) :  C
(d) :  D

Explanation:

The compound Y possess less energy than the X and thus Y is more stable than X.

Q: (a) :  A
(b) :  B
(c) :  C
(d) :  D

Q: 