Thermodynamics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 35 - 39 of 86

Visit this page to view all the question topics

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 35

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

Question

The specific heat of hydrogen gas at constant pressure is Equation and at constant volume is Equation . If two kilogram hydrogen gas is heated from 10°C to 30°C at constant pressure, the external work done on the gas to maintain it at constant pressure is

Choices

Choice (4) Response

a.

5 ⨯ 10 3 Cal

b.

4 × 10 3 Cal

c.

4 × 10 5 Cal

d.

4 × 10 4 Cal

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 36

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Helium at 27° has a volume of 27 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be Equation

Choices

Choice (4) Response

a.

9327°C

b.

2700°C

c.

1200°C

d.

108°C

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 37

» Thermodynamics » Concept of Temperature

MCQ▾

Question

The efficiency of Carnot’s engine operating between reservoirs, maintained at temperatures 27 C and -123 C,

Choices

Choice (4) Response

a.

0.4%

b.

0.75%

c.

50%

d.

24%

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 38

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

The temperature of sink of Carnot engine is 27°C and Efficiency of engine is 50%. Then temperature of source

Choices

Choice (4) Response

a.

327°C

b.

227ºC

c.

127ºC

d.

27°C

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 39

» Thermodynamics » Concept of Temperature

MCQ▾

Question

Eight moles of an ideal gas performs a cycle shown in figure. If the temperature T A = 1200 K, T B = 1600 K, T c = 4400 K and T D = 2400 K, the work done per

Choices

Choice (4) Response

a.

120 kJ

b.

160 KJ

c.

106 kJ

d.

139 kJ

To view these problems with solutions proceed here and click "Subscribe Now".