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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 403
Book's First Page(b) heating above 100°C (c) passing an electric current (d) just keeping it for 10 minutes Ans: (b) 263. Contact lenses are made from [CDS 2011] (a) polyvinyl chloride (b) polystyrene (c) Lucite (d) Teflon Ans: (c) 264. Which one among the following metals is used for making boats because it does not corrode by seawater? [CDS 2011] (a) Tungsten (b) Nickel (c) Antimony (d) Titanium Ans: (d) 265. Which one among the following is a strong smelling agent added to LPG cylinder to help in the detection of gas leakage? [CDS 2011] (a) Ethanol (b) Thioethanol (c) Methane (d) Chloroform Ans: (b) 266. Which type of glass is used for making glass reinforced plastic? [CPO (SI) 2010] (a) Pyrex glass (b) Flint glass (c) Quartz glass (d) Fibre glass Ans: (c) 267. Identify the metal which is non-toxic in nature [SSC(10+2) 2010] (a) Chromium (b) Gold (c) Cadmium (d) Cobalt Ans: (b) 268. A powerful eye irritant present in smog is [SSC(10+2) 2010] (a) nitric oxide (b) sulphur dioxide (c) peroxyacetyl nitrate (d) carbon dioxide Ans: (b) 269. "Which one among the following is not a property of salt? [NDA 2010] (a) Salts have ordered packing arrangements called lattices (b) Salts have low melting points but high boiling points 402