MEDIUM
Earn 100

Convection takes place in
(a)gases
(b)liquids
(c)Both(A) and (B)
(d)None of these.

50% studentsanswered this correctly
Important Questions on Heat
EASY
_____ is not necessary on radiation for heat transmission.

MEDIUM
A utensil, which is made of thick copper base, is placed on the gas burner to heat up water in it.
a) Describe briefly how heat is transferred:
ii) Spread through water in the utensil.

EASY

EASY


EASY
Give reason for the following:
A hot air balloon rises up in the sky.

EASY

MEDIUM

HARD

EASY


EASY

EASY
A utensil, which is made of thick copper base, is placed on the gas burner to heat up water in it.
Explain why water would boil faster when a lid is placed on the utensil.

EASY

MEDIUM

EASY

EASY
Give reason for the following:
The water pipe in a solar water heater is bent into the shape as given in the picture.


MEDIUM

EASY

