Q.

A white precipitate was formed when BaCl2 was added to water extract of an inorganic salt. Further, a gas 'X' with characteristic odour was released when the formed white precipitate was dissolved in dilute HCl. The anion present in the inorganic salt is

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a

SO32

b

NO2

c

S2

d

I

answer is B.

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Detailed Solution

BaCl2+SO32BaSO3white ppt.dilHClSO2burning sulphur like smell

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