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The orange solid on heating gives a colo...

The orange solid on heating gives a colourless gas and a greensolid which can be reduced to metal by aluminium powder. The orange and the green solids are respectively

A

`(NH_(4))_(2)Cr_(2)O_(7) and Cr_(2)O_(3)`

B

`Na_(2)Cr_(2)O_(7) and Cr_(2)O_(3)`

C

`K_(2)Cr_(2)O_(7) and CrO_(3)`

D

`(NH_(4))_(2)CrO_(4) and CrO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("Orange solid")((NH_(4))_(2)Cr_(2)O_(7)) overset(Delta)rarr underset("Colouress gas")(N_(2)) + underset("Green solid")(Cr_(2)O_(3))+4H_(2)O`
`Cr_(2)O_(3) + 2Al overset(Delta)rarr 2Cr + Al_(2)O_(3)`
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PRADEEP-P-BLOCK ELEMENTS -MCQ
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  10. Which statement is wrong for NO

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  11. Which of the following properties is not shown by NO ?

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