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13.	Which of the following is used as a preservative to protect processed food?
	A.  Saccharin
	B.  Sodium sulphate
	C.  BHT
	D.  Sodium metabisulphite

Answer

Ans: D Sodium metabisulphite

14.	Which gas is responsible for the swelling of bread?
	A.  Carbon dioxide
	B.  Oxygen
	C.  Ammonia
	D.  Carbon monoxide

Answer

Ans: A Carbon dioxide

15.	Sulphur reacts with sodium hydroxide to form
	A.  Sodium sulphite
	B.  Sodium thiosulphate
	C.  Sodium sulphate
	D.  Sodium sulphide

Answer

Ans: B Sodium thiosulphate

16.	The carboxylic acid present in butter is
	A.  Acetic acid
	B.  Formic acid
	C.  Butyric acid
	D.  Oxalic acid

Answer

Ans: C Butyric acid