Gunpowder mainly containsA. Calcium sulfateB. Potassium nitrateC. Lead – McqOptions

MCQOPTIONS

1.	Gunpowder mainly containsA. Calcium sulfateB. Potassium nitrateC. Lead sulphideD. Zinc sulphide
A.	A
B.	D
C.	B
D.	C
Answer» D. C

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