213. The disease which is not caused by an insect bite is
(a) Malaria
(b) Arthritis
(c) Plague
(d) Typhus
214. The hereditary characters are transmitted from one generation to another through
(a) Mitochondria
(b) Chromosomes
(c) Golgi apparatus
(d) Endoplasmic reticulum
215. Which is the purest form of Water?
(a) Rain water
(b) Distilled water
(c) River water
(d) Ocean water
216. Which is the cheapest source of energy
(a) Hydroelectric energy
(b) Solar energy
(c) Nuclear energy
(d) Thermal energy
217. Atmospheric humidity is found only in the
(a) Troposphere
(b) Stratosphere
(c) Ionosphere
(d) Exosphere
218. The instrument used to measure humidity is called
(a) Aneroid barometer
(b) Hygrometer
(c) Maximum and minimum thermometer
(d) Fortin’s barometer
219. Which one among the following terms best describes the method of converting a spherical surface into a plane surface ?
(a) Projection
(b) Photogrammetry
(c) Cartography
(d) Geodesy
220. Aurora Borealis are seen in the
(a) Thar desert
(b) Regions near north pole
(c) Equatorial belt
(d) Middle latitudes
221. Condensation in the form of water droplets on solid objects on the earth is known as
(a) Fog
(b) Mist
(c) Dew
(d) Frost
222. The main cause of days and nights is
(a) The rotation of the earth
(b) The revolution of the earth
(c) The difference of the solar and sidereal movements
(d) The galactic movement
223. Mirages occur in
(a) Oceans
(b) Tropical deserts
(c) Stratosphere
(d) Forests
224.Which natural resource can be renewed by physical effort and chemical treatment ?
(a) Petroleum
(b) Iron ore
(c) Coal
(d) All of the above