1
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
The number of grams of bromine that will completely react with 5 g of pentene is : [Atomic mass of $\mathrm{Br}=80 \mathrm{u}$ ]
A
22.4 g
B
8.4 g
C
11.4 g
D
54.2 g
2
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following alkene on reductive ozonolysis gives ketones only as the product
A
1, 2-butadiene
B
1, 4-cyclohexadiene
C
But-2-ene
D
2,3-dimethylbut-2-ene
3
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0

What would be the major product formed in the reaction?

COMEDK 2025 Evening Shift Chemistry - Hydrocarbons Question 2 English

A
COMEDK 2025 Evening Shift Chemistry - Hydrocarbons Question 2 English Option 1
B
COMEDK 2025 Evening Shift Chemistry - Hydrocarbons Question 2 English Option 2
C
COMEDK 2025 Evening Shift Chemistry - Hydrocarbons Question 2 English Option 3
D
COMEDK 2025 Evening Shift Chemistry - Hydrocarbons Question 2 English Option 4
4
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following reaction

$$\text { Propyne }+\mathrm{CH}_3 \mathrm{MgBr} \xrightarrow{\text { dry ether }} \mathbf{X}$$

Identify ' X ' from the following.

A
But-2-yne
B
Propane
C
Methane
D
But-2-ene
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