MCQ
Benzene can be obtained in the reaction
- AEthene $+ 1, 3-$butadiene
- ✓Trimerisation of ethyne
- CReduction of $PhCHO$
- DAll of these
✓
Answer
Correct option: B.
Trimerisation of ethyne
b
(b) Benzene can be obtained by polymerisation of acetylene.
(b) Benzene can be obtained by polymerisation of acetylene.
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
Acid used for making permanent marking on the glass surface is
Which is the correct order of the first ionization potential of $N, O$ and $C$
→The solubility of $AgI$ in $NaI$ solution is less than that in pure water because
→
Product P is
Identify compound $X$ in the following sequence of reactions :
→For the following two acid-base reactions, which statement is True ?
→$(I){\mkern 1mu} C{H_3}CH_2^ - {\mkern 1mu} + {\mkern 1mu} \mathop {C{H_3}N{H_2}}\limits_{p{K_a} = 35} \rightleftharpoons \mathop {C{H_3}C{H_3}}\limits_{p{K_a} = 50} + C{H_3}N{H^ - }$
$(II){\mkern 1mu} {F^ - }{\mkern 1mu} + {\mkern 1mu} \mathop {{H_2}O}\limits_{p{K_a} = 15.7} \rightleftharpoons \mathop {HF}\limits_{p{K_a} = 3.2} + H{O^ - }$
In both $DNA$ and $RNA$, heterocyclic base and phosphate ester linkages are at
→Which is optically active
For the disproportionation reaction $2 Cu ^{+}( aq ) \rightleftharpoons Cu ( s )+ Cu ^{2+}( aq )$ at $298\, K$ In $K$ (where $K$ is the equilibrium constant) is....... $\times 10^{-1}$
→Given $\left( E _{ Cu ^{2+} / Cu ^{+}}^{0}=0.16 V \right.$ $E _{ Cu ^{+} / Cu }^{0}=0.52 V$$\left.\frac{ RT }{ F }=0.025\right)$
In a solvent $50\, \%$ of an acid $HA$ dimerizes and the rest dissociates. The van't Hoff factor of the acid is $.....\,\times 10^{-2}$. (Round off to the nearest integer)
→