1.

A white powder when strongly heated gives off brown fumes. A solution of this powder gives a yellow precipitate with a solution of Kl. When a solution of barium chloride is added to a solution of powder, a white precipitate results. This white powder may be

Answer»

a soluble sulphate
KBr or NaBr
`Ba(NO_(3))_(3)`
AgNO_(3)`

Solution :`AgNO_(3)overset(DELTA)toAgOunderset("Brown fumes")(+NO_(2))`
`AgNO_(3)+"Kl"tounderset("YELLOW ppt.")(Agl+)KNO_(3)`
`AgNO_(3)+BaCl_(2)tounderset("Whitw ppt.")(AGCL+)BaNO_(3)`
Hence,(D) is the correct answer.


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