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p -Block elements - ll — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
On heating ammonium dichromate and barium azide separately we get
  • ✓
    $N_2$  in both cases
  • B
    $N_2$ with ammonium dichromate and $NO$ with barium azide
  • C
    $N_2O$  with ammonium dichromate and  $N_2$ with barium azide
  • D
    $N_2O$  with ammonium dichromate and $NO_2$ with barium azide
✓

Answer

Correct option: A.
$N_2$  in both cases
a
On heating ammonium dichromate and barium azide separately we get $N _2$ in both cases.

$\left( NH _4\right)_2 Cr _2 O _7 \rightarrow Cr _2 O _3+4 H _2 O + N _2$

$Ba \left( N _3\right)_2 \rightarrow Ba +3 N _2$

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