Questions

A rainbow is a natural spectrum appearing in the sky after a rain shower. It is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere. A rainbow is always formed in a direction opposite to that of the Sun. The water droplets act like small prisms. They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrops.

United States and Russia have together almost 400 billion tones. Which represents nearly 50% of world's reserves of coal.

Kapil Dev is the first Indian cricketer to get this honorary rank from Territorial Army.

Mortar is a mixture of cement or lime as a binder, sand and water.