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7th CBSE
IMPORTANT
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In solids, generally the heat is transferred by

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Important Questions on Heat

MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 15
From the following, choose the correct option that represents the order of the thermal expansions in solids (S), liquids (L) and gases (G) for an equal rise in temperature.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 16
The scale in clinical thermometer is marked from _____°C to _____ °C.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 17

Choose the correct statement: In winter,

(A) a set of double windows is a better insulator.

(B) windows constructed of a single-double thickness glass is a good insulator.

MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 18
Arrange the following substances in the increasing order of their thermal conductivity.
Copper, iron, glass.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 19
Mercury has a _____ boiling point and a _____ melting point.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 20
Choose the correct statement:
(A) When heat energy is given to ice at 0°C, the potential energy of the molecules of ice increases.
(B) Heat added to ice at 0°C does not increase the kinetic energy, and hence, there is no rise of temperature.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 21
Choose the correct statement:
(A) Boiling of a given substance takes place at all temperatures.
(B) Evaporation of a substance takes place at a constant temperature.
(C) Boiling takes place at every part of the liquid.
(D) Evaporation takes place only on the surface of liquid.
HARD
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 3 - Heat>PRACTICE QUESTIONS (CLASSROOM WING)>Q 22
Choose the correct statement:
(A) Solids undergo linear, arial and cubical expansions.
(B) Liquids and gases undergo cubical expansion.