MCQ's

1. In an isolated system, can be transferred between the system and its surrounding

a. only energy

b. only mass

c. both energy and mass

d. neither energy nor mass.

Correct Answer: D

2. Which of the following is an extensive property?

a. Volume.

b. Pressure

c. Viscosity

d. All of the above

Correct Answer:A

3. The extensive properties of a system,

a. are independent of the mass of the system

b. depend upon temperature of the system

c. depend upon the mass of the system

d. none of the above

Correct Answer: C

4. According to Clausius statement, it is impossible to construct a device operating on a cycle which transfers heat from

a. low pressure heat reservoir to high pressure reservoir

b. low temperature heat reservoir to high temperature reservoir

c. high pressure heat reservoir to low pressure reservoir

d. high temperature heat reservoir to low temperature reservoir

Correct Answer: B

5. Which of the following relations is true,for coefficient of performance (C.O.P)? a. (C.O.P)_{heat pump} – (C.O.P)_refrigerator = 1

b. (C.O.P)_{heat pump} – (C.O.P)_refrigerator > 1

c. (C.O.P)_{heat pump} – (C.O.P)_refrigerator < 1

d. (C.O.P)_{heat pump} – ( C.O.P)_refrigerator = 0

Correct Answer:A

6. Which among the following statements are correct?

1. Energy is an extensive property

2. Specific energy is an extensive property

3. Energy is a point function

4. Heat capacity is an extensive property

Options

a. Statement (1), (2) and (3)
b. Statement (1), (3) and (4)
c. Statement (2), (3) and (4)
d. Statement (1), (2), (3) and (4)

7. A cyclic heat engine operates between a source temperature of 927 ^oC and a sink temperature of 27 ^oC. What will be the maximum efficiency of the heat engine?

a. 100 %

b. 80 %

c. 75 %

d. 70 %

8. PMM2 is the machine which violates

a. Kelvin-Planck statement

b. Clausius statement

c. both a. and b.

d. none of the above