HEAT TEMPERATURE AND PRESSURE - Practice Mode

1) Which kind of heat transmission takes places by up-ward flow?

Conduction Convection Radiation Reflection

Correct Answer: Convection

2) Which one is the radiation method of heat transmission?

An iron rod is heated with one of its end and heat transmitted to other end Cold water goes to the bottom from top while on heating the water On heating gases, heat transmitted to surroundings The heat from sun travels through the space

Correct Answer: The heat from sun travels through the space

3) What is called if the length of the solid expands when heated?

Linear expansion Superficial expansion Cubical expansion Area expansion

Correct Answer: Linear expansion

4) What is the change in length per unit original length per degree rise in temperature is called?

Co-efficient of friction Co-efficient of linear expansion Co-efficient of superficial expansion Co-efficient of cubical expansion

Correct Answer: Co-efficient of linear expansion

5) What is the unit of co-efficient of linear expansion?

Number / Degree C Number / Degree C / meter length Number / Degree C / mm length Number / Degree C / cm length

Correct Answer: Number / Degree C

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