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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 382
Book's First Page(a) Steel (b) Graphite (c) Tungsten (d) Diamond Ans: (d) 135. Which of the following is a non-metal that remains liquid at room- temperature? [NCA 1991] (a) Bromine (b) Chlorine (c) Helium (d) Phosphorus Ans: (a) 136. Which of the following is a non-ferrous metal? (a) Aluminium (b) Iron (c) Nickel (d) Cobalt Ans: (a) 137. Sodium metal is kept under: [BSF 1990] (a) water (b) alcohol (c) petrol (d) kerosene Ans: (d) 138. Which of the following statements about "dry ice" are correct? 1) It is a useful refrigerant. 2) On heating, it turns into a liquid. 3) It has acidic properties. 4) It causes burns when pressed against the skin. (a) 1 and 3 (b) 1, 2 and 3 (c) 2 and 4 (d) 1, 3 and 4 Ans: (a) 139. The metal used in storage batteries is: (a) iron (b) copper (c) lead (d) tin Ans: (c) 140. Water has maximum density at : (a) -1°C (b) 0°C (c) 4°C (d) 100°C Ans: (c) 381