Class 7 Science MCQs - Chapter 12

Heat Transfer Quiz Questions and Answers PDF - 3

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Heat Transfer Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: The rise of warm air and fall of cool air in order to fill the space forms a

A) radiation current

B) conduction current

C) convection current

D) air current

MCQ 12: Greenhouse gases effect on earth's atmosphere is increased by

A) CFCs (chlorofluorocarbons)

B) air conditioners

C) perfumes

D) burning fossil fuels

MCQ 13: Handles of saucepans and other cooking utensils are

A) thermal conductors

B) thermal insulators

C) electrical conductors

D) metalloids

MCQ 14: 'Metals' are the best

A) insulators of heat

B) conductors of heat

C) conductors of light

D) insulators of electricity

MCQ 15: Radiation is prevented by

A) glass walls

B) silver painted glass walls

C) black painted glass walls

D) metal walls

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Heat Transfer Quiz Questions and Answers PDF - 3

Heat Transfer Questions & Answers PDF Download: MCQ Quiz 3

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