A white crystalline salt A reacts with dilute HCI to liberate a suffoc – McqOptions

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1.	A white crystalline salt A reacts with dilute HCI to liberate a suffocating gas B and also forms a yellow precipitate. The gas B turns potassium dichromate acidified with dilute H2SO4 to a green coloured solution C. A, B and C are respectively ______?
A.	Na2S2O3, SO2, Cr2 (SO4)3
B.	Na2SO3, SO2, Cr2 (SO4)3
C.	Na2SO4, SO2, Cr2 (SO4)3
D.	Na2S, SO, Cr2 (SO4)3
Answer» B. Na2SO3, SO2, Cr2 (SO4)3

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