NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1462 - 1466 of 2142

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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.

Equation

b.

Equation

c.

Equation

d.

Equation

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%

Question number: 1466

» 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

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