3981: Which one of the following layers of the atmosphere is responsible for the deflection of radio waves ?
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Ionosphere
3982: The Vitamin containing cobalt is
(a) B1
(b) B2
(c) B6
(d) B12
3983: Chlorophyll contains:
(a) Beryllium
(b) Calcium
(c) Magnesium
(d) Strontium
3984: The battle of Dharmat was fought between
(a) Muhammad Gori and Jai Chand
(b) Babar and the Afghans
(c) Aurangzeb and Dara Shikoh
(d) Ahmad Shah Durrani and the Marathas
3985: What is the largest 4 digit number exactly divisible by 88?