1
WB JEE 2023
MCQ (Single Correct Answer)
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-0.25
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Select the molecule in which all the atoms may lie on a single plane is

A
4-Nitrobenzaldehyde
B
4-Methoxybenzaldehyde
C
4-Methylnitrobenzene
D
4-Nitroacetophenone
2
WB JEE 2023
MCQ (Single Correct Answer)
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The IUPAC name of

WB JEE 2023 Chemistry - IUPAC Nomenclatures Question 1 English

A
3-Formyl-2-pentene
B
2-Ethylbut-2-enal
C
3-Ethylbut-3-enal
D
2-Ethylcrotonaldehyde
3
WB JEE 2023
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WB JEE 2023 Chemistry - Isomerism Question 2 English 1WB JEE 2023 Chemistry - Isomerism Question 2 English 2

The relationship between the pair of compounds shown above are respectively,

A
enantiomer, diastereomer, diastereomer
B
enantiomer, enantiomer, diastereomer
C
enantiomer, homomer (identical), diastereomer
D
homomer (identical), diastereomer, geometrical isomer
4
WB JEE 2023
MCQ (Single Correct Answer)
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The correct stability order of the following carbocations is

(I) $$\mathrm{{H_2}\mathop C\limits^ \oplus - CH = CH - C{H_3}}$$

(II) $$\mathrm{\mathop C\limits^ \oplus {H_2} - CH = CH - BM{e_2}}$$

(III) $$\mathrm{{H_2}\mathop C\limits^ \oplus - CH = CH - NMe}$$

(IV) $$\mathrm{{H_2}\mathop C\limits^ \oplus - CH = CH - OMe}$$

A
II > I > III > IV
B
III > I > II > IV
C
III > IV > I > II
D
IV > III > II > I
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