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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)andCr_(2)O_(3)`

B

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

C

`K_(4)Cr_(2)O_(7)andCrO_(3)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("Orange solid")((NH_(4))_(2)Cr_(2)O_(7))overset(Delta)tounderset("Colouress gas")(N_(2))+underset("Green solid")(Cr_(2)O_(3))+4H_(2)O`
`Cr_(2)O_(3)+2Aloverset(Delta)to2Cr+Al_(2)O_(3)`
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PRADEEP-P-BLOCK ELEMENTS (NITROGEN FAMILY)-Competition focus jee(main and advanced)/ medical entrance special) (I. Multiple Choice Questions (with one correct answer)
  1. Very pure nitrogen can be obtained by :

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  2. Thermal decomposition of ammonium dichromate gives

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  3. The orange solid on heating gives a colourless gas and a greensolid wh...

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  4. An inorganic salt (A) is decomposed on heating to give two products (B...

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  5. When a brown compound of Mn (A) is teated with HCl, it gives a gas (B)...

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  6. The gases produced in the reaction, Pb(NO(3))(2)overset(Delta)toandNH(...

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  7. The reaction between NH(2)^(-) and N(2)O gives

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  8. Nitrogen dioxide is not produced on heating

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  9. A colourless gas X forms a brown coloured gas when mixed with air. The...

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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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  12. A gaseous substance dissolve in water giving a pale blue solution whic...

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  13. The correct order of the acidic nature of oxides is in the order

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  14. Which oxide of nitrogen is not a common pollutant introduced into the ...

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  15. Nitric acid can be obtained from ammonia via the formation of intermed...

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  16. Concentrated nitric acid upon long standing turns yellowish-brown due ...

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  17. The reaction of zinc with dilute and concentrated nitric acid, respect...

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  18. When copper is heated with conc.HNO(3) it produces

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  19. Which of the following metal Fe, Zn, Pb, Ag and Pt do not give a metal...

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  20. The brown ring test for nitrates depends on

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