Tag: temperature and heat

Questions Related to temperature and heat

If object A and object B has no transfer of heat, then they both are in

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Catalytic

  2. Thermal equilibrium

  3. Expansion

  4. None

Show answer
Correct Option: B
Explanation:

$Object \ A \rightleftharpoons Object\ B$
Both are at same temperature or there is not temperature difference between them.

Good conductor of heat is

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Hydrogen

  2. Oxygen

  3. Nitrogen

  4. None

Show answer
Correct Option: D
Explanation:

All of them are gases, which are not good conductors of heat.

Air is a _______ conductor of electricity.

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Good

  2. Bad

  3. Both

  4. None

Show answer
Correct Option: B
Explanation:

All gases are poor conductor of heat. Air is a very poor conductor of heat.

Air is a good conductor of heat. True or false.

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
False
Air is bad conductor of heat. It is due to the air trapped between the cotton molecules which gives warmth on taking quilt in winter It is due to air molecules trapped between wool fabrics which provide warmth to body during winter season.

Wearing black clothes in summer is more preferable. True or false.

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. True

  2. False

Show answer
Correct Option: B
Explanation:
False
Wearing black clothes in summer is not preferable as during summer there is more heat present in the atmosphere and black clothes absorb more heat comparatively. So, black clothes are not preferable during summer.

State whether given statement is True or False
Two thin blankets are more warmer than one thick blanket

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
The blanket do not insulate; actually air insulates.
Air is trapped in the space between two thin blankets. Since air is insulator of heat, it prevents the escape of body heat. The air can't pass deeper and the layers will stop the air in two thin blankets where as there are no layers and air can pass deeper in one thick blanket. That's why two thin blankets are usually warmer than one thick blanket.

Why tubes of a boiler are covered with layer of asbestos?

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Asbestos is bad conductor of heat

  2. Asbestos is good conductor of heat

  3. Neither A nor B

  4. None

Show answer
Correct Option: A
Explanation:

The tubes are covered with asbestos layer in order to prevent heat less by conduction.

Which of the following materials is used to make clinical thermometer?

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Magnet

  2. Mercury

  3. Copper

  4. Titanium

Show answer
Correct Option: B
Explanation:

Mercury because it has low freezing point and high boiling point so it can be used over wide range of temperature.

The thermometric liquid should be a

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Bad conductor of heat

  2. Good conductor of heat

  3. It should be of high freezing point

  4. It should be of low boiling point

Show answer
Correct Option: B
Explanation:

The thermometric liquid should be of high MP and BP and good conductor of heat, so it quickly absorbs heat to obtain temperature of object.

A cold steel serving spoon is dipped in hot mushroom soup. It transfers heat to its other end by process of

physics temperature and heat applications of heat conduction applications of insulation clothes - our necessity

  1. Convection

  2. Conduction

  3. Radiation

  4. None

Show answer
Correct Option: B
Explanation:

Conduction: Process of transfer of heat by contacting one body with other. In this process, heat transfer takes place without moving the particles.