37) The tropical cyclones of the Bay of Bengal are usually called -

38) Kalahari desert is in?

39) Which among the following industry showed growth during two world wars in India?

40) The ’Eri’ Silkworm (Philosamia recini)which feeds on common castor-plant, is mainly raised in which of the following states, for producing eri-silk?

41) Which is the most widely distributed and commercially reared honeybee species in the world?