A white crystalline salt imparts a violet colour to a Bunsen flame, and with hot concentrated H2SO4 ,

A white crystalline salt imparts a violet colour to a Bunsen flame, and with hot concentrated H₂SO₄ , forms a pungent gas. On treatment with an AgNO₃ solution, this gas forms a white precipitate readily soluble in NH₃ . The white crystalline salt may be

(A) Na₂SO₄

(B) KCl

(D) SrCl₂

A white crystalline salt imparts a violet colour to a Bunsen flame, and with hot concentrated H2SO4 ,

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