Heat Class 7 MCQ Online Test

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Heat Class 7 MCQ Online Test. We covered all the Heat Class 7 MCQ Online Test in this post so that you can practice well for the exam.

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MCQ on Heat for School Students

Amongst the matter …… expand maximum

1. solid

2. liquid

3. gases

4. fuels

Option 3 – gases

Factors influencing the quantity of heat are

1. mass of the body and rise in temperature

2. density of the body and pressure

3. mass of the body and specific heat, density

4. all of these

Option 1 – mass of the body and rise in temperature

1 calorie = …….

1.418 J

2.41.8 J

3.0.418 J

4.4.18 J

Option 4 – 4.18 J

Specific heat depends upon

1. nature of the substance

2. initital temperature of the substance

3. final temperature of the substance

4. massof the substance

Option 1 – nature of the substance

Specific heat and calorific value of a substance are usually

1. same

2. not same

3. cannot be compared

4. none of these

Option 3 – cannot be compared

The heat produced by burning unit mass of a fuel is called

1. calorific value

2. specific heat

3. heat of combustion

4. all of these

Option 1 – calorific value

To convert unit of specific heat in C.G.S. to S.I. system, multiply the value with

1.4.18

2.41.8

3. 0.418

4.3.17

Option 1 – 4.18

Thermostat works on the principle of

1. Calorimetry

2. Bomb calorimeter

3. Bimetallic strip

4. Thermometer

Option 3 – Bimetallic strip

Thermostats are used in

1. iron box

2. refrigerators

3. fire alarms

4. all of these

Option 4 – all of these

A bomb calorimeter is used to determine the calorific value of

1. fuels only

2. food only

3. both 1 and 2

4. none of these

Option 3 – both 1 and 2

The C.G.S. unit of heat

1. Joule

2. Calorie

3. Erg

4. Degree centigrade

Option 2 – Calorie

The instrument used to determine the calorific value of a fuel is

1. Thermometer

2. Thermostat

3. Bomb calorimeter

4. Calorimeter

Option 3 – Bomb calorimeter

The amount of heat absorbed by a body is proportional to

1. mass of the body

2. rise in temperature of the body

3. both 1 and 2

4. none of these

Option 3 – both 1 and 2

The method of mixture obeys the fundamental principle of

1. Bomb calorimeter

2. Calorimetry

3. Specific heat

4. Latent heat

Option 2 – Calorimetry

The increase in length per unit length per 1°C rise of temperature is called

1. Coefficient of a real expansion

2. Coefficient of cubical expansion

3. Coefficient of linear expansion

4. All of these

Option 3 – Coefficient of linear expansion

The calorific values of food and fuels are determined by

1. Calorimeter

2. Bomb calorimeter

3. Thermometer

4. Thermostat

Option 2 – Bomb calorimeter

We covered all the heat class 7 MCQ online test in this post above so that you can practice well for the exam.

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