3741: The clouds float in the atmosphere because of their low
(a) temperature
(b) velocity
(c) pressure
(d) density
3742: Forest areas have been labelled as 1, 2, 3 and 4 in the rough outline map given:
Among these, those which were threatened in 1997 by a serious epidemic include
(a) teak forests of 3 and 4
(b) oaks forests of 1 and sal forests of 2
(c) sal forests of 3
(d) sandalwood forests of 4
3743: Which one of the following elements is essential for the construction of nuclear reactors ?
(a) Cobalt
(b) Nickel
(c) Zirconium
(d) Tungsten
3744: A rectangular plot of lawn shown in the figure has dimensions x and y and is surrounded by a gravel pathway of width 2 m. What is the total area of the pathway ?
(a) 2x + 2y + 4
(b) 2x + 2y + 8
(c) 4x+ 4y + 8
(d) 4x + 4y + 16
3745: Kalamkari painting refers to
(a) a hand-painted cotton textile in South India
(b) a handmade drawing on bamboo handicrafts in North-East India
(c) a block-painted woollen cloth in Western Himalayan region of India
(d) a hand-painted decorative silk cloth in North-Western India