Thermodynamics-Laws of Thermodynamics (NEET Physics): Questions 18 - 23 of 30

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Question number: 18

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

A system is given 500 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (J = 4.18 Joule/cal)

Choices

Choice (4) Response
a.

-300 Joule

b.

- 528.2 Joule

c.

418 Joule

d.

654 Joule

Question number: 19

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

A system is given 300 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (j = 4.18 Joule/cal)

Choices

Choice (4) Response
a.

156.5 Joule

b.

- 528.2 Joule

c.

654 Joule

d.

-300 Joule

Question number: 20

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

110 J of heat is added to a gaseous system, whose internal energy change is 40 J, then the amount of external work done is

Choices

Choice (4) Response
a.

70 J

b.

40 J

c.

150 J

d.

110 J

Question number: 21

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

The first law of thermodynamics is concerned with the conservation of

Choices

Choice (4) Response
a.

Mass

b.

Energy

c.

Temperature

d.

Momentum

Question number: 22

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

Assertion-Reason▾

Assertion (Ꭺ)

A room can be warmed by opening the door of a refrigerator in a closed room

Reason (Ꭱ)

Head flows from lower temperature (refrigerator) to higher temperature (room).

Choices

Choice (4) Response
a. Ꭺ is true but Ꭱ is false
b. Ꭺ is false but Ꭱ is true
c. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
d. Both Ꭺ and Ꭱ are false

Question number: 23

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

In changing the state of thermodynamics from A to B state, dg heat required is Q and the work done by the system is W. Tae change in its internal energy is

Choices

Choice (4) Response
a.

QW2

b.

Q

c.

QW

d.

Q+W

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