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PYQ 1200 Q/A Part - 1
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PYQ 1200 Q/A Part - 5
Kerala PSC General Science Book Study Materials Page 342
Book's First Page(c) chloride and sulphate of calcium and magnesium (d) None of these Ans: (c) 120. The heavy water is a type of: [UPPCS (Pre) 1993] (a) coolent (b) moderator (c) ore (d) fuel Ans: (b) 121. In all biological compounds the most fundamental element is: [UPPCS (Pre) 2003] (a) nitrogen (b) oxygen (c) carbon (d) sulphur Ans: (c) 122. In which of the following carbon is not present? [42nd BPSC (Pre) 1998] (a) diamond (b) graphite (c) coal (d) None of these Ans: (d) 123. Which one of the following can replace hydrogen from the acids and forms salt? [NDA 2010] (a) Sulphur (S) (b) Silicon (Si) (c) Zinc (Zn) (d) Phosphorus (P) Ans: (c) 124. The percentage content of carbon is found to be maximum in : [UPPCS (Pre) 1999] (a) bituminous (b) lignite (c) peat (d) anthracite Ans: (d) 125. The ordinary and general type of coke is : [39th BPSC (Pre) 1994] (a) anthracite (b) lignite (c) bituminous (d) peat Ans: (c) 126. The polluted gas emitted from the vehicles is mainly: [BPSC 2001] (a) Carbondioxide (b) Carbon monoxide (c) Marsh gas (d) Nitrogen oxide Ans: (b) 127. Which one of following sets of elements was primarily responsible for the origin of life on the Earth? [CSAT, 2012] (a) Hydrogen, Oxygen, Sodium (b) Carbon, Hydrogen, Nitrogen (c) Oxygen, Calcium, Phosphorus (d) Carbon, Hydrogen, Potassium Ans: (a) 128. Dry ice is : (a) Solid water (b) Solid CO2 (c) Solid H2O2 (d) Dehydrated ice Ans: (b) 129. Quartz is composed of: [SSC Grad. 2004] (a) Calcium sulphate (b) Calcium silicate (c) Sodium sulphate 341