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PYQ 1200 Q/A Part - 1
PYQ 1200 Q/A Part - 2
PYQ 1200 Q/A Part - 3
PYQ 1200 Q/A Part - 4
PYQ 1200 Q/A Part - 5
Kerala PSC General Science Book Study Materials Page 226
Book's First Page149. When water is heated from 0°C to 10°C the volume of water: [CBI 1991] (a) increases steadily (b) decreases steadily (c) first increases then decreases (d) first decreases then increases Ans : (d) 150. How should a man wearing spectacles work with a microscope? [RRB 1993] (a) He should keep on wearing spectacles (b) He should take off spectacles (c) He cannot use the microscope at all (d) Wearing or taking off makes little difference Ans : (a) 151. The weight "of an object would be minimum when it is placed: [CDS 1992] (a) at the equator (b) at the North Pole (c) at the South Pole (d) at the centre of the earth Ans : (d) 152. When an open bottle of scent is kept in a corner of the room, its odour is felt in all the corners, This is due to the phenomenon of: [CBI1992] (a) vaporisation (b) evaporation (c) diffusion (d) sublimation Ans : (c) 153. Speed of sound is greater in solids than in liquids because: [IFS 1989] (a) the atoms in solids are regularly arranged (b) the atoms in liquids are loosely packed (c) the solids have high elasticity (d) None of the above Ans : (c) 154. Which of the following are phenomenon exhibited by sound waves? [NDA 1992] 1) Reflection 2) Refraction 3) Interference 4) Polarisation 5) Diffraction (a) 1, 2, 3 (b) 1, 2, 3, 5 (c) 1, 3, 4, 5 (d) 2, 3, 4, 5 Ans : (b) 155. Match the following: [NDA 1990] Parameters Dependence A. lntensity of light 1. Properties of the medium 225