[P] \to^{Br_\2} C_\2H_\4Br_\2 \to^{NaNH_\2}_{NH_\3} Q [Q] \to^{20%H_\2SO_\4}_{Hg^{2+} , \Delta} [R] \to^{Zn-Hg{/}HCl} [S] The species P, Q, R and S respectively are

Correct Answer is : ethene, ethyne, ethanal, ethane

ethene, ethyne, ethanal, ethane

ethane, ethyne, ethanal, ethene

ethene, ethyne, ethanal, ethanol

ethyne, ethane, ethene, ethanal

WBJEE 2018 Chemistry Solved Paper

Question : 33 of 40

Marks: +1, -0

[P]

Br2

→

C2H4Br2

NaNH2

→

NH3

Q
[Q]

20%H2SO4

→

Hg2+,Δ

[R]

Zn−Hg/HCl

→

[S]
The species P, Q, R and S respectively are

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