MCQ
In the given reactions identify A and B.


- ✓A : 2-Pentyne & B : trans $-2-$ butene \\
- BA : n - Pentane & B : trans $-2-$ butene \\
- CA : 2-Pentyne & B : Cis $-2-$ butene \\
- DA : n - Pentane & B : Cis $-2-$ butene


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$(A) -CN$ $(B) -NO_2$ $(C) -NH_2$ $(D) -F$
| List$-I$ Reaction | List$-II$ Type of redox reaction | ||
| $(A)$ | $N _{2(g)}+ O _{2(g)} \rightarrow 2 NO _{( g )}$ | $(I)$ | Decomposition |
| $(B)$ | $2 Pb\left( NO _3\right)_{2(s)} \rightarrow 2 PbO _{( s )}+4 NO _{2(g)}+ O _{2(g)}$ | $(II)$ | Displacement |
| $(C)$ | $2 Na _{( s )}+2 H _2 O _{( l )} \rightarrow 2 NaOH _{( aq .)}+ H _{2(g)}$ | $(III)$ | Disproportionation |
| $(D)$ | $2 NO_{2(g)}+2 OH_{(aq)}^{-} \rightarrow NO_{2(qq)}^{-}+NO_{3(aq)}^{-}+H_2 O_{(l)}$ | $(IV)$ | Combination |
$2A{B_2}(g) \rightleftharpoons 2AB(g) + {B_2}(g)$
