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MCQ (Single Correct Answer)

WB JEE 2023
The correct order of C = O bond length in ethyl propanoate (I), ethyl propenoate (II) and ethenyl propanoate (III) is...
WB JEE 2023
Select the molecule in which all the atoms may lie on a single plane is
WB JEE 2023
The correct stability order of the following carbocations is (I) $$\mathrm{{H_2}\mathop C\limits^ \oplus - CH = CH - C{H_3}}$$ (II) $$\mathrm{\matho...
WB JEE 2023
The correct order of boiling points of N-ethylethanamine (I), ethoxyethane (II) and butan-2-ol (III) is
WB JEE 2023
The correct order of acidity of above compounds is...
WB JEE 2022
The correct order of relative stability for the given free radicals is : ...
WB JEE 2022
Hybridisation of the negative carbons in (1) and (2) are...
WB JEE 2021
The maximum number of atoms that can be in one plane in the molecule p-nitrobenzonitrile are
WB JEE 2021
p-nitro-N, N-dimethylaniline cannot be represented by the resonating structures. ...
WB JEE 2021
Which structure has delocalised $$\pi$$-electrons?
WB JEE 2020
The correct order of acidity for the following compounds is :...
WB JEE 2020
For the following carbocations, the correct order of stability is I. $$^ \oplus C{H_2} - COC{H_3}$$II. $$^ \oplus C{H_2} - OC{H_3}$$III. $$^ \oplus C{...
WB JEE 2019
The molecule/molecules that has/have delocalised lone pair(s) of electrons is/are...
WB JEE 2017
Among Me3N, C5H5N and MeCN (Me = methyl group) the electronegativity of N is in the order
WB JEE 2017
The correct order of acid strengths of benzoic acid (X), peroxybenzoic acid (Y) and p-nitrobenzoic acid (Z) is
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