3746: A ball is dropped from the top of a high building with a constant acceleration of 9.8 m/s2. What will be its velocity after 3 seconds ?
(a) 9.8 m/s
(b) 19.6 m/s
(c) 29.4 m/s
(d) 39.2 m/s
3747: Which one of the following groups of plants was domesticated in the New World and introduced into the 'Old World'?
(a) Tobacco, cocoa and rubber
(b) Tobacco, cotton and rubber
(c) Cotton, coffee and sugarcane
(d) Rubber, coffee and wheat
3748: Which one of the following pairs is not correctly matched ?
(A) Seychelles : Victoria
(B) Slovenia : Bratislava
(C) Sierra Leone : Freetown
(D) Uzbekistan : Tashkent
3749: The number of times in a day the Hour-hand and the Minute-hand of a clock at right angles is
(a) 44
(b) 48
(c) 24
(d) 12
3750: Which of the following statements is correct?
(a) The village was the basic unit of Chola administration.
(b) The Chola kingdom was on the decline in the 9th century.
(c) Amoghavarsha is the best remembered of the Chola kings.
(d) None of the above