NEET Physics: Questions 1461 - 1465 of 2098

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Question number: 1461

» 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 [γ=53]

Choices

Choice (4) Response

a.

9327°C

b.

2700°C

c.

1200°C

d.

108°C

Question number: 1462

» Kinetic Theory of Gases » Kinetic Energy and Temperature

MCQ▾

Question

A flask is filled with 13 gm of an ideal gas at 27°C and its temperature is raised to 52°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is

Choices

Choice (4) Response

a.

1.5 g

b.

1.0 g

c.

2.0 g

d.

2.5 g

Question number: 1463

» Kinetic Theory of Gases » Equation of State of a Perfect Gas

MCQ▾

Question

The value of the gas constant (R) calculated from the perfect gas equation is 8.32 Joule/gm mole K, whereas in value calculated from the knowledge of C P and C V of the gas is 1.58 Cal/gm mole K. From this data, the value of J is

Choices

Choice (4) Response

a.

5.26JCal

b.

5.18JCal

c.

5.20JCal

d.

5.16JCal

Question number: 1464

» Kinetic Theory of Gases » Kinetic Energy and Temperature

Assertion-Reason▾

Assertion (Ꭺ)

Maxwell speed distribution graph is asymmetric about most probable speed.

Reason (Ꭱ)

rms speed of ideal gas depends upon its type (monoatomic, diatomic and polyatomic).

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are 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.

Ꭺ is true but Ꭱ is false

Question number: 1465

» 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%

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