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A gas is evolved which burns with blue flame when the mixture is heated with conc.

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A gas is evolved which burns with blue flame when the mixture is heated with conc. H2SO4 . The mixture contains. 

(A) Carbonate 

(B) Oxalate 

(C) Nitrate 

(D) Nitrite

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1 Answer

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Correct Option (B) Oxalate

Explanation:

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