# Thermodynamics-Laws of Thermodynamics (NEET Physics): Questions 25 - 29 of 30

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## Passage

V-T graph of a process of monoatomic ideal gas is as shown in figure.

## Question number: 25 (2 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

### Question

Heat is supplied to the gas in process (s) -

### Choices

Choice (4) Response

a.

DA, AB and DC

b.

AB and BC only

c.

DA only

d.

DA and AB only

## Question number: 26 (3 of 3 Based on Passage) Show Passage

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

### Question

Sum of work done by the gas in process ABCD is –

### Choices

Choice (4) Response

a.

negative

b.

data is insufficient

c.

zero

d.

positive

## Question number: 27

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

Assertion-Reason▾

### Assertion (Ꭺ)

It is not possible for a system, unaided by external agency to transfer heat from a body at low temperature to another body at higher temperature.

### Reason (Ꭱ)

According to Clauses statement, A process is possible whose sole result is the transfer heat from a cooled object to a hotter object.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

## Question number: 28

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

### Question

In a given process for an ideal gas, ∆ W = 0 and ∆ Q < 0. Then for the gas

### Choices

Choice (4) Response

a.

The temperature will increase

b.

The pressure will remain constant

c.

The temperature will decrease

d.

The volume will increase

## Question number: 29

» Thermodynamics » Laws of Thermodynamics » Second Law of Thermodynamics

MCQ▾

### Question

Which of the following processes are irreversible?

(1) Transfer of heat by radiation

(2) Electrical heating of a Ni chrome wire

(3) Transfer of heat by conduction

(4) Isothermal compression

Select the correct answers and mark it according to the following is:

### Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

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