What is a twister? Why are the majority of twisters observed in areas around the Gulf of Mexico?

The recent cyclone on the east coast of India was called “Phailin”. How are the tropical cyclones named across the world?

Tropical cyclones are largely confined to South China Sea, Bay of Bengal and Gulf of Mexico. Why?

Underline the changes in the field of society and economy from the Rig Vedic to the later Vedic period.

Estimate the contribution of Pallavas of Kanchi for the development of art and literature of South India.

"Though the great Cholas are no more, yet their name is still remembered with great pride because of their highest achievements in the domain of art and architecture." Comment.

What were the events that led to the Quit India Movement? Point out its results.

How far is it correct to say that the First World War was fought essentially for the preservation of balance of power?

How far was the Industrial Revolution in England responsible for the decline of handicrafts and cottage industries in India?