Page No. 745
Hydrocyanic acid (HCN) is used as an insecticide for____________________?
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Penicillin is separated from fermented broth by ____________________?
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Carbon disulphide is mainly used in the production of______________________?
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In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because___________________?
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Sea water contains about ______________________ ppm of bromine ?
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Nitric acid is not used in the manufacture of______________________?
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Permanent hardness of water can be removed by___________________?
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Celluloid is chemically___________________?
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Plasticisers are added to synthetic plastics to____________________?
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