3981: The type of crop which is able to fix nitrogen from air is known as:
(a) Tuber
(b) Coffee
(c) Legume
(d) Wheat
3982: The staple commodities of export by the English East India Company from Bengal in the middle of the 18th century were
(a) Raw cotton, oil-seeds and opium
(b) Sugar, salt, zinc and lead
(c) Copper, silver, gold, spices and tea
(d) Cotton, silk, saltpetre and opium
3983: How many times are an hour hand and a minute hand of a clock at right angles during their motion from 1.00 p.m. to 10.00 p.m.?
(A) 10
(B) 18
(C) 20
(D) 9
3984:
What is the maximum number of different paths that exist between the station A and the station B?
(a) 28
(b) 31
(c) 33
(d) 35
3985: Which of the following statements about the cultivation of tea and coffee is true?
(a) Tea grows at a higher altitude than coffee
(b) Coffee grows at a higher altitude than tea
(c) Both grow at about the same altitude
(d) There is no climatic relationship between the two crops