What is meant by liberalisation of the Indian Economy...?

Liberalisation of the economy forms one of the pillars of the New Economic Policy announced by the government in 1991-92.  Liberalisation means freeing the economy from direct or physical controls imposed by the government such as industrial licensing, price and distribution controls on products, import licensing, foreign exchange control, control of capital issues by companies (i.e. collection of funds by sale of their shares and debentures, or funds), direct control of credit (laying down the limit on credit that the financial institutions might grant), restriction on investment by large business houses, and the like, so that development and operation of the economy is increasingly guided by the freely operating market forces.  The new economic policy was built on the assumption that too many government controls gave room for widespread corruption and retarded the growth of the economy.  Accordingly, India has been consistently trying since 1991-92 not only to liberalise its economy but to integrate it with world economy (globalisation).

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What is deep freezing...?

Deep Freezing is a method of preserving food by lowering its temperature to 18 degree centigrade or below.  It stops almost all spoilage processes, although there may be some residual enzyme activity in uncooked vegetables, which is why these are blanched (dipped in hot water to destroy the enzymes) before freezing.  Micro-organisms cannot grow or divide while frozen, but most remain alive and can resume activity once defrosted.  Commercial techniques freeze foods rapidly in order to prevent the growth of large ice crystals which would damage the food tissue on thawing.

When were the Present Continents Formed...?

At the very time when oil was beginning to form, an enormous shift took place in the Earth's crust, which slowly resulted in the formation of the present continents.

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Numerous studies, even in recent years, confirm the theory that the great continental mass pushed out of the sea in the earlier periods and then split apart into several pieces which drifted about the Earth for hundreds of millions of years.  Finally, between the middle of Cretaceous and early Tertiary Periods (100 million to 50 million years ago) these pieces split up again to form land masses recognisable in form to the continents of today.  These sections are still drifting apart.
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This interesting suggestion, first put forward by the German meteorologist, Alfred Wegener (1880-1930), is known as the theory of 'continental drift'.  Wegener, who was also a daring explorer and experience geologist, published his ideas in a book printed in 1912.  It naturally created a great stir in scientific circles, which soon split into two groups, one of his supporters and one of his opponents.  They are both eager to prove or disprove his theory.
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In a few words, wegener's idea was as follows: in dim, distant times the continental masses were joined together in a single block (or shield), which Wegener called Pangaea.  The rest of the Earth was covered by a primeval mass of water, the Pantalaxia.
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During the Eocene Period, about 50 million years ago, a slow but steady movement then began.  The Pangaea cracked and, pulled apart by the rotating movement of the Earth, the bits began to drift away from each other as if they were floating on a heavier, more elastic base.
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According to Wegener, it was because of this shifting that the folds occurred in the Earth's crust which lifted up the loftiest mountain chains still existing in the world today.
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