Thermodynamics (NEET Physics): Questions 6 - 10 of 84

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Question number: 6

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

The latent heat of vaporization of water is 2240 J/gm. If the work done in the process of expansion of 1 g of water is 150 J, then increase in internal energy is

Choices

Choice (4) Response
a.

2408 J

b.

1904 J

c.

2072 J

d.

2090 J

Question number: 7

» Thermodynamics » Concept of Temperature

MCQ▾

Question

How much work to be done in decreasing the volume of an ideal gas by an amount of 2.4 × 10 -4 m 3 at normal temperature and constant normal pressure of 1 × 10 -5N/ m 2

Choices

Choice (4) Response
a.

24 Joule

b.

25 Joule

c.

28 Joule

d.

27 Joule

Question number: 8

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

Question

The pressure in the tyre of a car is four times the atmospheric pressure at 300 K. If this tyre suddenly bursts, its new temperature will be (γ = 1.4)

Choices

Choice (4) Response
a.

300(4)0.42.4

b.

300(4)1.40.4

c.

300(4)1.40.4

d.

300(4)0.41.4

Question number: 9

» Thermodynamics » Concept of Temperature

MCQ▾

Question

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas, is

Choices

Choice (4) Response
a.

35

b.

25

c.

34

d.

57

Question number: 10

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

During the melting of a slab of ice at 273 K and one atmospheric pressure

(1) Positive work is done on the ice-water system by the atmosphere

(2) Positive work is done by ice-water system on the atmosphere

(3) The internal energy of the ice-water system increases

(4) The internal energy of the ice-water system decreases

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

1, 2 and 3 are correct

b.

2 and 4 are correct

c.

1 and 2 ate correct

d.

1 and 3 are correct

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