12th Class Chemistry MCQS Group III A and Group IVA Elements Online Test | FG STUDY

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12th Class Chemistry MCQS Group III A and Group IVA Elements Online Test

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Question 1 of 21

Chemical composition of colemanite is:

	CaB₄O₇. 4H₂O
	Na₂B₄O₇.4H₂O
	Ca₂B₆O₁₁. 5H₂O
	CaNaB₅O₉. 8H₂O

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