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1
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
A hydrocarbon ' $\mathrm{X}$ ' with formula $\mathrm{C}_{6} \mathrm{H}_{8}$ uses two moles of $\mathrm{H}_{2}$ on catalytic hydrogenation of its one mole. On ozonolysis, ' $\mathrm{X}$ ' yields two moles of methane dicarbaldehyde. The hydrocarbon ' $\mathrm{X}$ ' is:
A
hexa-1, 3, 5-triene
B
cyclohexa-1, 4-diene
C
cyclohexa - 1,3 - diene
D
1-methylcyclopenta-1, 4-diene
2
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Choose the correct set of reagents for the following conversion.

trans $$\left(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}\right) \rightarrow \operatorname{cis}\left(\mathrm{Ph}-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_{3}\right)$$

A
$$\mathrm{Br_2,alc\cdot KOH,NaNH_2,H_2}$$ Lindlar Catalyst
B
$$\mathrm{Br_2,aq\cdot KOH,NaNH_2,Na}$$ (Liq NH$$_3$$)
C
$$\mathrm{Br_2,alc\cdot KOH,NaNH_2,Na}$$ (Liq NH$$_3$$)
D
$$\mathrm{Br_2,aq\cdot KOH,NaNH_2,H_2}$$ Lindlar Catalyst
3
JEE Main 2023 (Online) 30th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The major products 'A' and 'B', respectively, are

JEE Main 2023 (Online) 30th January Morning Shift Chemistry - Hydrocarbons Question 56 English

A
JEE Main 2023 (Online) 30th January Morning Shift Chemistry - Hydrocarbons Question 56 English Option 1
B
JEE Main 2023 (Online) 30th January Morning Shift Chemistry - Hydrocarbons Question 56 English Option 2
C
JEE Main 2023 (Online) 30th January Morning Shift Chemistry - Hydrocarbons Question 56 English Option 3
D
JEE Main 2023 (Online) 30th January Morning Shift Chemistry - Hydrocarbons Question 56 English Option 4
4
JEE Main 2023 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement)

A
2-Bromo-3,3-dimethylpentane
B
2-Bromopropane
C
1-Bromo-2-methylbutane
D
2-Bromopentane
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