What type of clothes should we wear in summer?

Convert the following temperatures to Celsius scale.

(a) 293 K

(b) 470 K

Give reason for the following observations:

(a) Naphthalene balls disappear with time without leaving any solid.

(b) We can get the smell of perfume sitting several metres away.

Arrange the following in increasing order of forces of attraction between the particles –

water, sugar, oxygen.