Stretching gold coin into a ring is a _________ change.

Stretching of a rubber band is a ______ change.

The term biotechnology was coined by _________

A thin conducting ring of radius R is given a change +Q . The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is:

Black Gold of India_______.

Who coined the term auxin?

A coin is tossed three times.

Who coined the name gibberellin ?

A box contains 4 gold and 3 silver coins. Another box contains 3 gold and 5 silver coins. A box is chosen at random and a coin is drawn from it. If the selected coin is a gold coin, find the probability that it was from the second box.

____________ metal is alloyed with gold and silver for making coins and jewels.