1.

A' on heating at 700^(@)C in air gives a white infusible amorphous powder (B) which is decomposed when heated in the currect of steam to give white powder 'C' and a gas 'D'.'D' turns red litmus blue and in aqueous solution , gives reddish brown ppt with K_(2)HgI_(4). compound 'C on strong heating gives 'E. 'A' is

Answer»

B
SI
`P_(4)`
`N_(2)`

SOLUTION :`2B + 3O_(2) to B_(2)O_(3)` ( WHITE POWDER)
`underset("('A')")(2B) + N_(2) to underset("('B')")(2BN) ` (White powder)


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