Question

A white powder when strongly heated gives off brown forms A solution of this powder gives a yellow precipitate with a solution of KI when a solution of burium choloride is added to a solution a solution of powder a white precipitate results .This white powder may be
A. A solution sulphate
B. Kbr or NaBr
C. `Ba(NO_(3))_(2)`
D. `AgNO_(3)`

Answer 1

Correct Answer - d
`AgNO_(3) rarr Ag + NO_(2) + (1)/(2)O_(3)`
`AgNO_(3) +KI rarr AgI + KNO_(3)`
`BaCI_(2) + 2ANO_(3) rarr 2AgCI + Ba(NO_(3))_(3)`