- ✓Propyne
- B$2-$butyne
- C$1,3-$butadiene
- DPentene
$C{H_3}C \equiv CH + AgN{O_3} + N{H_4}OH \to $ $C{H_3}C \equiv CAg + N{H_4}N{O_3} + {H_2}O$
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$(i)\,CO(g)+ H_2O(g) \rightleftharpoons CO_2(g)+H_2(g)\,;\,K_1$
$(ii)\,CH_4(g)+H_2O(g) \rightleftharpoons CO(g)+3H_2(g)\,;\,K_2$
$(iii)\,CH_4(g) + 2H_2O(g) \rightleftharpoons CO_2(g)+ 4H_2(g)\,;\,K_3$


Statement $I$ : Aniline does not undergo Friedel-Crafts alkylation reaction.
Statement $II$ : Aniline cannot be prepared through Gabriel synthesis.
In the light of the above statements, choose the correct answer from the options given below:
${B^{3 + }}_{(aq.)} + 3{e^ - } \to B(s)$ ; $E = 0.6\ Volt$
Using above information find the ion which will be deposited first at cathode if solution containing $A_{(aq.)}^{2 + }$ & $B_{(aq.)}^{ 3+ }$ is electrolysed