3916: Which one of the following agricultural practices is eco-friendly ?
(a) Organic farming
(b) Shifting cultivation
(c) Cultivation of high-yielding varieties
(d) Growing plants in glass-houses
3917: A boat which has a speed of 5 km/hr in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water in km/hr is
(a) 1
(b) 3
(c) 4
(d)
3918: Why does man weigh more at the poles than at the equator?
(a) Because there is no atmosphere at the poles
(b) Because gravitational pull is more at the poles
(c) Because gravitational pull is less at the poles
(d) None of the above
3919: The loss of Qandhar was a big blow to the Mughal empire from the view point of
(a) natural resources
(b) buffer territory
(c) communication
(d) strategic stronghold
3920: Which of the following is/are the principal feature(s) of the Government of India Act, 1919?
1. Introduction of dyarchy in the executive government of the provinces
2. Introduction of separate communal electorates for Muslims
3. Devolution of legislative authority by the centre to the provinces
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3