Q. Chlorine gas is used in the manufacture of :
1) Washing soda
2) Baking soda
3) Baking powder
4) Bleaching powder
Q. Bleaching action of moist SO2 is because of its -
1) Reducing power
2) Oxidising power
3) Acidic property
4) Basic property
Q. Old paintings can be restored through an oxidizing agent -
1) H2S
2) H202
3) H2PO4
4) H3O+
Q. Which among the following metals oxide provide amphoteric nature ?
1) Sodium
2) Silver
3) Aluminium
4) Calcium
Q. The oxidation number of chromium in chromyl chloride is -
1) 0
2) +4
3) +2
4) +6
Q. Which of the following is the most abundant metal?
1) Fe
2) A1
3) Ti
4) Cu
Q. Which of the following does not exhibit allotropy?
1) Carbon
2) Silicon
3) Lead
4) Tin
Q. Structurally biodegradable detergent should contain -
1) Normal alkyl chain
2) Branched alkyl chain
3) Phenyl side chain
4) Cyclohexyl side chain
Q. Natural rubber is a polymer of -
1) Neoprene
2) Isoprene
3) Chloroprene
4) 1, 3-butadiene
Q. The reaction in which multiple copies of the gene of interest is synthesized in vitro is known as -
1) ELISA
2) RIA
3) PCR
4) RAPD
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