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25.	Vinegar is a dilute solution of
	A.  Methyl alcohol
	B.  Ethyl alcohol
	C.  Acetic acid
	D.  Formic acid

Answer

Ans: C Acetic acid

26.	Bio gas mainly consists of
	A.  Hydrogen and oxygen
	B.  Carbon dioxide and methane
	C.  Hydrogen and methane
	D.  Carbon dioxide and hydrogen

Answer

Ans: B Carbon dioxide and methane

27.	The gas which emits from rice field is
	A.  Methane
	B.  Ethane
	C.  Hydrogen
	D.  Nitrogen

Answer

Ans: A Methane

24.	The acid present in stomach juice is
	A.  Hydrochloric acid
	B.  Lactic acid
	C.  Tartaric acid
	D.  Citric acid

Answer

Ans: A Hydrochloric acid