3636: The rainbow and the rainbow-like colours seen on a thin film of oil on a water surface are two phenomena. They are
(a) Similar in nature and both are due to refraction of light
(b) Different in nature and rainbow is due to interference of light, while colour of thin film is due to diffraction
(c) Similar in nature and both are due to interference of light
(d) Different in nature and rainbow is due to refraction, while colour of thin film is due to interference of light
3637: With reference to Indian agriculture, which one of the following statements is correct?
(a) About 90 per cent of the area under pulses in India is rainfed.
(b) The share of pulses in the gross cropped area at the national level has double in the last two decades
(c) India accounts for about 15 per cent of the total area under rice in the world
(d) Rice occupies about 34 per cent of the gross cropped area of India
3638: Two trains leave New Delhi at the same time. One travels north at 60 kmph and the other travels south at 40 kmph. After how many hours will the trains be 150 km apart ?
(A) 4/3
(B) 3/2
(C) 3/4
(D) 15/2
3639: Elephant Pass, which is frequently in the news, is mentioned in the context of the affairs of which one of the following?
(a) Nepal
(b) India
(c) Sri Lanka
(d) Bangladesh
3640: Four persons Alok, Bhupesh, Chandu and Dinesh have a total of Rs. 100/- among themselves. Alok and Bhupesh between them have as much money as Chandu and Dinesh between them but Alok has more money than Bhupesh, and Chandu has only half the money that Dinesh has Alok has in fact Rs. 5/- more than Dinesh. Who has the most money ?
(a) Alok
(b) Bhupesh
(c) Chandu
(d) Dinesh