# Thermodynamics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 31 - 35 of 86

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## Question number: 31

» Thermodynamics » Laws of Thermodynamics » Zeroth Law of Thermodynamics

MCQ▾

### Question

One mole of an ideal gas expands at a constant temperature of 200 K from an initial volume of 10 litres to a final volume of 20 litres. The work done in expanding the gas is

(R = 8.31 J/mole-K)

### Choices

Choice (4) Response

a.

750 Joules

b.

3456 Joules

c.

1728 Joules

d.

1500 Joules

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## Question number: 32

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

An ideal gas expands in such a manner that its pressure and volume can be related by equation PV 2 = constant. During this process, the gas is

### Choices

Choice (4) Response

a.

Heated

b.

Cooled

c.

First heated and then cooled

d.

Neither heated nor cooled

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## Question number: 33

» Thermodynamics » Thermal Equilibrium

MCQ▾

### Question

A monatomic gas is suddenly compressed to of its original volume adiabatically, than the pressure of the gas will change to

### Choices

Choice (4) Response

a.

b.

8

c.

32 times its initial pressure

d.

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## Question number: 34

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

Helium at 27° has a volume of 8 litres. It is suddenly compressed to a volume of 1 litre. The temperature of the gas will be

### Choices

Choice (4) Response

a.

1200°C

b.

9327°C

c.

108°C

d.

927°C

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## Question number: 35

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

### Question

The specific heat of hydrogen gas at constant pressure is and at constant volume is . 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

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