A crystalline substance 'A' gave a precipitate when treated with barium nitrate. The aqueous solution of 'A' gave yellow colour with methyl orange indicator. The substance 'A' could be a) K3PO4 b) (NH4)2SO4 c) NaCl d) CaCl
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A gave yellow colour with methyl orange indicator is k3po4
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Answer:
K3Po4
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