GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 065

GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 065

641). For what purpose is alum used by dyers of cloth?
A). as first aid for cuts
B). for softening hard water
C). as a mordant
D). for fire proofing fabrics

Answer: as a mordant

   
642). Polymer of amino acid is
A). sugar
B). fat
C). phenol
D). protein

Answer: protein


   
643). Which gas is used in the preparation of soda water?
A). carbon monoxide
B). chlorine
C). carbon dioxide
D). ammonia

Answer: carbon dioxide


   
644). Which of the following compounds gives lodoform reaction?
A). acetone
B). benzaldehyde
C). benzohenone
D). methyl alcohol

Answer: acetone


   
645). The oxidation number. of C in oxalic acid H2C2O4 is
A). 4
B). 2
C). 3
D). 1

Answer: 3



646). Cooking oil can be converted into vegetable ghee by the process of
A). hydrogenation
B). crystallization
C). oxidation
D). ionization

Answer: hydrogenation


   
647). Which is an example of fermented beverage?
A). whisky
B). brandy
C). rum
D). wine

Answer: wine


   
648). Oil of winter green is
A). Acetyl salicylic acid
B). Methyl salicylate
C). Ethyl salicylate
D). Benzoic acid

Answer: Methyl salicylate


   
649). A part from carbon and hydrogen pyridine contains
A). oxygen
B). nitrogen
C). sulphur
D). chlorine

Answer: nitrogen


   
650). The chemical name for vitamin C is:
A). benzoic acid
B). ascorbic acid
C). salicylic acid
D). crotonic acid

Answer: ascorbic acid