THE CORRECT OPTION
Conduction takes place in:
solids only
(b)liquids only
(c) gases only
(d) solids as well as liquid
On the Celsius scale, the freezing point of water is :
(a) 20°C
(b) 0°C
(c)100°C
(d)50°C
Which of these is the best insulator of heat?
(a) water
(b)zinc
(c)alcohol
(d)hydrogen
Which of these does not require a medium?
(a) conduction
(b)convection
(c)radiation
(d)all of these
Transfer of heat due to convection occur in
(a)solids
(b) liquids
(c)gases
(d)both (b) and (c)
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