# NEET Physics: Questions 1462 - 1466 of 2142

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## Question number: 1462

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

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.

b.

c.

d.

## Question number: 1464

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

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

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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