Physics
Solids have definite shapes.This is because

The forces of cohesion of the molecules within are very much less in them
The forces of adhesion are less
The forces of cohesion are very large
The forces of adhesion are large

ANSWER DOWNLOAD EXAMIANS APP

Physics
Rainbow is due to

ionisation of water deposits
refraction and reflection of sunlight by water droplets
absorption of sunlight in minute water droplets
diffusion of sunlight through water droplets

ANSWER DOWNLOAD EXAMIANS APP