761: Cloudy nights are warmer compared to clear cloudless nights, because clouds
(a) prevent cold waves from the sky from descending on Earth
(b) reflect back heat given off by Earth
(c) produce heat and radiate it towards Earth
(d) absorb heat from the atmosphere and send it towards Earth
762: Mixed farming means:
(a) Simultaneous cultivation of a number of crops in a single field
(b) Alternate cropping in a field
(c) Growing fruits and vegetables in the same field
(d) None of these
763: Which are the materials generally employed as solder in soldering operation in elections.
(a) Iron and tin
(b) Lead and tin
(c) Aluminum and lead
(d) Aluminum and iron
764: Which of the following States lies partly to the north of the Himalayas ?
(a) Himachal Pradesh
(b) Arunachal Pradesh
(c) Jammu & Kashmir
(d) Sikkim
765: Examine the map given below :
The places marked 1, 2, 3 and 4 were respectively the seats of powers of the
(a) Scindias, Holkars, Gaekwads & Bhonsles
(b) Holkars, Scindias, Gaekwads & Bhonsles
(c) Gaekwads, Bhonsles, Scindias & Holkars
(d) Scindias, Holkars, Bhonsles & Gaekwads