# Thermodynamics (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics): Questions 5 - 8 of 9

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## Question number: 5

» Thermodynamics » Thermal Equilibrium

Appeared in Year: 2014

MCQ▾

### Question

An aluminum piece of mass 50 g initially at 300 °C is dipped quickly and taken out of 1 kg of water, initially at 30° C. if the temperature of the aluminum piece immediately after being taken out of the water is found to be 160°C, what is the temperature of the water then? (Specific heat capacities of aluminum and water are 900 J kg–1 K–1 and 4200 J kg–1, respectively. )

### Choices

Choice (4) Response

a.

31.5°C

b.

45°C

c.

28.5°C

d.

165°C

## Question number: 6

» Thermodynamics » Concept of Temperature

Appeared in Year: 2015

MCQ▾

### Question

One mole of ideal gas undergoes a linear process as shown in figure below. Its temperature expressed as function of volume V is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 7

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

An open mouthed bottle contains a gas at 500 C. To what temperature should the gas be heated so that half mass of the gas may leave it?

### Choices

Choice (4) Response

a.

3730 C

b.

3800 C

c.

4440 C

d.

3500 C

## Question number: 8

» Thermodynamics » Concept of Temperature

MCQ▾

### Question

During the melting of a slab of ice at 273 K at atmospheric pressure,

1. Positive work is done by the ice water system on the atmosphere.
2. Positive work is done on the ice water system by the atmosphere.
3. Internal energy of the ice water system increases
4. Internal energy of the ice water system decreases.

### Choices

Choice (4) Response

a.

(1) and (4) are correct

b.

(1), (2) and (3) are correct

c.

(2) and (3) are correct

d.

(1) and (3) are correct

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