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25.	The pH of an acidic solution is
	A.  3.0
	B.  6.5
	C.  8.5
	D.  11.4

Answer

Ans: B 6.5

26.	The Latin name of Vinegar is
	A.  Formica
	B.  Bacterium
	C.  Butyrum
	D.  Acetum

Answer

Ans: D Acetum

27.	Formalin is an aqueous solution of
	A.  Ethanol
	B.  Methanol
	C.  Propanaone
	D.  Methyl acetate

Answer

Ans: B Methanol

28.	Name the metal, which has been used in ancient times
	A.  Zinc
	B.  Copper
	C.  Silver
	D.  Titanium

Answer

Ans: B Copper