# Thermodynamics-Laws of Thermodynamics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 14 - 18 of 30

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 14

» 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

## Question number: 15

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

### Question

A system is given 200 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (J = 4.18 Joule/cal)

### Choices

Choice (4) Response

a.

- 236 Joule

b.

236.5 Joule

c.

-300 Joule

d.

236 Joule

## Question number: 16

» 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 one kilogram hydrogen gas is heated from 10°C to 20°C at constant pressure, the external work done on the gas to maintain it at constant pressure is

### Choices

Choice (4) Response

a.

10 4 Cal

b.

5 ⨯ 10 3 Cal

c.

10 5 Cal

d.

10 3 Cal

## Question number: 17

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

### Question

150 J of heat is added to a gaseous system, whose internal energy change is 40 J, then the amount of external work done is

### Choices

Choice (4) Response

a.

40 J

b.

70 J

c.

110 J

d.

150 J

## Question number: 18

» Thermodynamics » Laws of Thermodynamics » First Law of Thermodynamics

MCQ▾

### Question

A system is given 500 calories of heat and it does 600 joules of work. The internal energy of the system change in this process is (J = 4.18 Joule/cal)

### Choices

Choice (4) Response

a.

-300 Joule

b.

- 528.2 Joule

c.

418 Joule

d.

654 Joule

f Page