1.

"Orange solid"overset(Delta)rarrunderset(gas)"diamagnetic"+underset("residue")"green" underset("solid"(X_(2)))"Orange"overset(Delta)rarrunderset("magnetic(gas)")"para"+underset(("residue"))"green"+underset("(solid)")"yellow" X_(1) and X_(2) are respectively:

Answer»

`Na_(2)Cr_(2)O_(7),K_(2)Cr_(2)O_(7)`
`(NH_(4))_(2)Cr_(2)O_(7),Na_(2)Cr_(2)O_(7)`
`K_(2)Cr_(2)O_(7),(NH_(4))_(2)Cr_(2)O_(7)`
`(NH_(4))_(2)Cr_(2)O_(7),KNO_(3)`

Answer :B


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