" A thin paper cup filled with water does not catch fire when placed over a flame.This is because "

Seeds when placed in water swell because of

When water is poured over burning wood, the fire goes off. This is because

Why sodium catches fire when dropped in water ?

Rohan observed that if a small piece of sodium is added to water it catches fire whereas a piece of calcium added to the water it does not catch fire. Can you explain his observations with the help of the chemical equations?

Firemen wear dress which does not catch fire. How is it possible?

Sodium catches fire in water. Why?