MEDIUM
7th CBSE
IMPORTANT
Earn 100

State two applications of radiation.

Important Questions on Heat

MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>Q D
Give reason: The radiators of cars are painted black.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>Q D
Give reason: Handles of cooking utensils are made of wood, plastic or ebonite.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>Q D
Give reason: We prefer wearing dark-coloured clothes in winters.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>Q D
Give reason: The inner side of the outer wall and outer side of the inner wall of a thermos flask are silvered.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>HOTS
Give reason: Ventilators are built close to the ceiling.
MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>HOTS

Why are freezers placed in the top part of the refrigerator?

MEDIUM
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>HOTS

Why does an ordinary glass tumbler crack if very hot water is poured into it?

EASY
7th CBSE
IMPORTANT
Frank Everyday Science>Chapter 4 - Heat>Let's revise>Q A

Why are gaps left between lengths of railway tracks?