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1
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The correct stability order of the following resonance structures of $$\mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CHO}$$ is

JEE Main 2024 (Online) 9th April Evening Shift Chemistry - Basics of Organic Chemistry Question 31 English

A
$$\text { II }>\text { III }>\text { I }$$
B
$$\text { II }>\text { I }>\text { III }$$
C
$$\text { III }>\text { II }>\text { I }$$
D
$$\text { I }>\text { II }>\text { III }$$
2
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Total number of stereo isomers possible for the given structure :

JEE Main 2024 (Online) 9th April Evening Shift Chemistry - Basics of Organic Chemistry Question 29 English

A
4
B
2
C
8
D
3
3
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The incorrect statement regarding ethyne is

A
The carbon - carbon bonds in ethyne is weaker than that in ethene
B
Both carbons are sp hybridised
C
The $$\mathrm{C}-\mathrm{C}$$ bonds in ethyne is shorter than that in ethene
D
Ethyne is linear
4
JEE Main 2024 (Online) 9th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

Relative stability of the contributing structures is :

JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 23 English

A
(II) > (I) > (III)
B
(III) > (II) > (I)
C
(I) > (III) > (II)
D
(I) > (II) > (III)
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