1
JEE Main 2025 (Online) 22nd January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The alkane from below having two secondary hydrogens is :

A
2,2,4,5-Tetramethylheptane
B
2,2,4,4-Tetramethylhexane
C
4-Ethyl-3,4-dimethyloctane
D
2,2,3,3-Tetramethylpentane
2
JEE Main 2025 (Online) 22nd January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements :

Statement I : One mole of propyne reacts with excess of sodium to liberate half a mole of $\mathrm{H}_2$ gas.

Statement II : Four g of propyne reacts with $\mathrm{NaNH}_2$ to liberate $\mathrm{NH}_3$ gas which occupies 224 mL at STP.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are incorrect
B
Statement I is incorrect but Statement II is correct
C
Both Statement I and Statement II are correct
D
Statement I is correct but Statement II is incorrect
3
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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
Change Language

Identify the product A and product B in the following set of reactions.

JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Hydrocarbons Question 27 English

A
JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Hydrocarbons Question 27 English Option 1
B
JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Hydrocarbons Question 27 English Option 2
C
JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Hydrocarbons Question 27 English Option 3
D
JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Hydrocarbons Question 27 English Option 4
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