SECTION-3

##### Q11. The absolute zero pressure corresponds to the temperature of

(a) 273°C
(b) –273°C
(c) 0°C
(d) none of the above.

Ans:(d) none of the above.

(a) 273°C
(b) –273°C
(c) 0°C
(d) –237°C.

Ans:(b) –273°C

(a) one kg
(b) half kg
(c) one gm
(d) 100 gm.

Ans:(c) one gm

##### Q14. The heat supplied to a gas at constant volume

(a) increases the temperature of the gas
(b) increases the internal energy of the gas
(c) external work is done
(d) none of the above

Ans:(a) increases the temperature of the gas

##### Q15. For any thermodynamic process, the area under T-S curve (temperature-entropy curve) represents

(a) work done by the system
(b) work done on the system
(c) head absorbed or rejected
(d) none of the above.

Ans:(c) head absorbed or rejected

##### Q16. Entropy depends upon

(a) heat and work
(b) volume and temperature
(c) temperature and pressure
(d) all of the above.

Ans:(c) temperature and pressure

##### Q17. When heat is absorbed by a gas, change of entropy is considered to be

(a) zero
(b) positive
(c) negative
(d) none of the above.

Ans:(b) positive

##### Q18. If in the above question, the heat rejected is 150 kcal/sec, the process would be

(a) irreversible
(b) reversible
(c) impossible
(d) none of the above.

Ans:(b) reversible

(a) ∫ pdV
(b) ∫ Vdp
(c) −∫ pdV
(d) −∫ Vdp .

Ans:(a) ∫ pdV

##### Q20. For a flow process the work done is equal to

(a) ∫ pdV
(b) ∫ Vdp
(c) −∫ pdV
(d) −∫ Vdp.

Ans:(d) −∫ Vdp.

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##### Read More Sections of Thermodynamics Objective Questions

Each section contains maximum 80 Questions. To practice more questions visit other sections.

Thermodynamics Objective Questions – Section-1

Thermodynamics Objective Questions – Section-2

Thermodynamics Objective Questions – Section-3

Thermodynamics Objective Questions – Section-4