What happens to the heat energy that is supplied to a solid once it starts melting?

State whether the following statement is true or false:
The movement of tiny particles in a gas or liquid is called the Tyndall effect.

$(a)$ Define evaporation. Out of nylon and cotton clothes,which will be more comfortable during summer and why?
$(b)$ Are evaporation and boiling the same? If not,then why?

Which gas is called dry ice? Why?

Classify the following processes into osmosis or diffusion:
$(a)$ Swelling up of a raisin on keeping in water.
$(b)$ Spreading of virus on sneezing.
$(c)$ Earthworm dying on coming in contact with common salt.
$(d)$ Shrinking of grapes kept in thick sugar syrup.
$(e)$ Preserving pickles in salt.
$(f)$ Spreading of smell of cake being baked throughout the house.
$(g)$ Aquatic animals using oxygen dissolved in water during respiration.

Convert $300 \ K$ into Celsius scale and $-10^{\circ}C$ into Kelvin scale.