MCQ
Which mixture forms a buffer when dissolved in $1\,lit.$ of water
- A$0.2\,mol\,\,NaOH$ and $0.2\,mol$ $\,HBr$
- B$0.2\,mol\,\,NaCl$ and $0.3\,mol$ $\,HCl$
- ✓$0.4\,mol\,\,HNO_2$ and $0.2\,mol\,\,NaOH$
- D$0.5\,mol\,\,NH_3$ and $0.5\,mol\,\,HCl$
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$2NO + 2H_2 \longrightarrow N_2 + 2H_2O$
has following mechanism
Step $-I$ : $2NO \longrightarrow N_2O_2$
Step $-II$ : $N_2O_2 + H_2 \longrightarrow N_2O + H_2O$
Step $-III$ : $N_2O + H_2 \longrightarrow N_2 + H_2O$
Which of the following substance is a reaction intermediate
$\begin{matrix}
\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\, \,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix} \\
C{{H}_{3}}-C-CH=C{{H}_{2}} \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}\,\,\,\,\,\,\,\, \,\,\,\, \\
\end{matrix}\,$ $\xrightarrow{{{H}_{2}}O/{{H}^{\oplus }}}$ $\underset{Major\,\,product}{\mathop{A}}\,$ $+$ $\underset{Major\,\,product}{\mathop{B}}\,$
The major product is
Compound $(A)$ is
$A{B_3}(g) \rightleftharpoons A{B_2}(g) + \frac{1}{2}{B_2}(g)$ , when the initial pressure of $AB_3$ is $800\,torr$ and the total pressure developed at equilibrium is $900\,torr$ . What percentage of $AB_3(g)$ is dissociated?
| List-$I$ | List-$II$ | ||
| $A$ | $[Fe(H_2O)_6]^{2+}$ | $P$ | $0$ |
| $B$ | $[Fe(H_2O)_6]^{3+}$ | $Q$ | $1$ |
| $C$ | $[Fe(CN)_6]^{4-}$ | $R$ | $2$ |
| $D$ | $[Fe(CN)_6]^{3-}$ | $S$ | $4$ |
| $E$ | $[Ni(H_2O)_4]^{2+}$ | $T$ | $5$ |
$A$ $||$ $B$ $||$ $C$ $||$ $D$ $||$ $E$