336: Who among the following anticipated Newton by declaring that all things gravitate to the earth ?
(a) Aryabhata
(b) Varahamihira
(c) Buddhagupta
(d) Brahmagupta
337: How is Steve Fossett known as ?
(a) As a crocodile hunter
(b) For completing the longest non-stop flight around the globe
(c) For swimming across Atlantic Ocean
(d) For climbing to Mt Everest without any co-climber
338: Disguised unemployment generally means
(a) large number of people remain unemployed
(b) alternative employment is not available
(c) marginal productivity of labour is zero
(d) productivity of workers is low
339: The most important strategy for the conservation of biodiversity together with traditional human life is the establishment of
(a) biosphere reserves
(b) botanical gardens
(c) national parks
(d) wildlife sanctuaries
340: A man is standing on the 8 m long shadow of a 6 m long pole. If the length of his shadow is 2.4 m, what is the height of the man ?
(a) 1.4m
(b) 1.6m
(c) 1.8m
(d) 2.0m