MCQ
On heating ammonium dichromate, the gas evolved is
- A$O_2$
- ✓$N_2$
- C$N_2O$
- D$NH_3$
✓
Answer
Correct option: B.
$N_2$
b
$\left( NH _4\right)_2 Cr _2 O _7( s ) \rightarrow N _2( g )+4 H _2 O ( g )+ Cr _2 O _3( s )$
$\left( NH _4\right)_2 Cr _2 O _7( s ) \rightarrow N _2( g )+4 H _2 O ( g )+ Cr _2 O _3( s )$
Ammonium dichromate decomposes on heating to produce nitrogen gas water vapour (gaseous due to the temperature of the reaction), and solid chromium($III$) oxide.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The product of this reaction should be
Find the concentration of ion which is first precipitated at the point when the third ion starts precipitating, if $AgNO_3$ is added gradually to the solution that contains $0 .1\ M\ Cl^-, 0 .1\ M\ Br^-$ and $0. 1\ M\ I^-$
→Given that
Salt || $K_{sp}$
$AgCl$ || $2 \times {10^{ - 10}}$
$AgBr$ || $5 \times {10^{ - 13}}$
$Ag$ || $9 \times {10^{ - 17}}$
Ethylene di bromide on heating with metallic sodium in ether solution yields
The total energy of the electron of $H-$ atom in the second quantum state is $-E_2$. The total energy of the $He^+$ atom in the third quantum state is
→In the reaction $H_2 + O_2 \to H_2O$. If $6\,g$ of $H_2$ combines with $64\,g$ of $O_2$. Find mass of Excess reagent Left ? ............. $\mathrm{g}$
→$\begin{array}{*{20}{c}}
{C{H_3} - C = CH - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,}
\end{array}$ $\xrightarrow[{KMn{O_4}/\Delta }]{{NaI{O_4}}}$ Product will be
→{C{H_3} - C = CH - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,}
\end{array}$ $\xrightarrow[{KMn{O_4}/\Delta }]{{NaI{O_4}}}$ Product will be
Which one of the following reactions does not yield an alkyl halide
The first $I.E.$ of $Na, Mg, Al$ and $Si$ are in the order
→$2\, Mn O _{4}^{-}+ b\, C _{2} O _{4}^{2-}+ c\, H ^{+} \rightarrow x\, Mn ^{2+}+ y\, CO _{2}$ $+ z\, H _{2} O$
→If the above equation is balanced with integer coefficients, the value of $c$ is ...........
(Round off to the Nearest Integer).
The number of possible structural alkynes with molecular formula, $C_5H_8$ is
→