1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A Hydrocarbon [A] (molecular formula $$\mathrm{C}_3 \mathrm{H}_6$$) on reaction with $$\mathrm{Br}_2 / \mathrm{CCl}_4$$ gave [B]. When [B] is heated with 2 moles of alcoholic $$\mathrm{KOH}$$, it gave compound [C]. 3 moles of Compound [C] when passed through red hot Iron tube forms [D]. Identify [D].

A
Polypropene
B
Benzene
C
Polystyrene
D
1, 3, 5- Trimethylbenzene
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the product $$[\mathrm{C}]$$ formed at the end of the reaction below

1,1,2,2- Tetrabromopropane + 2 $$\mathrm{Zn}_{(\mathrm{S})}$$ / Ethanol $$\rightarrow$$ [B]

$$[\mathrm{B}]$$ + 2 moles of $$\mathrm{HBr} \rightarrow[\mathrm{C}]$$

A
2, 2-Dibromopropane
B
1, 1- Dibromopropane
C
1,3-Dibromopropane
D
1, 2-Dibromopropane
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Given below are 4 reactions. Two of these reactions will give product which is an equimolar mixture of the d and 1 forms. Identify these 2 reactions.

[A] 2- Methylpropene + $$\mathrm{HI} \rightarrow$$ ---------

[B] But-1-ene + $$\mathrm{HBr} \rightarrow$$ -----------

[C] 3-Methylbut-1-ene + $$\mathrm{HI} \rightarrow$$ -----------

[D] 3- Phenylpropene + $$\mathrm{HBr}$$ (Peroxide) $$\rightarrow$$ -----------

A
C & A
B
D & B
C
B & C
D
A & D
4
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

An unsaturated hydrocarbon $$[\mathrm{A}]$$ reacts with $$\mathrm{HBr}$$ in presence of Benzoyl peroxide to yield [B] Compound [A] when reacted with cold, dilute alkaline $$\mathrm{KMnO}_4$$ gave compound [C], 2-Methylbutane-2, 3-diol But when [A] is reacted with hot $$\mathrm{KMnO}_4$$, it yielded $$\mathrm{CH}_3 \mathrm{COOH}$$ and a compound [D] Identify compounds [A], [B] and [D]

A
[A] 3-Methylbut-1-ene [B] 1-Bromo-3-methylbutane [D] Propanoic acid.
B
[A] Pent-2-ene [B] 2-Bromopentane [D] Propanal
C
[A] 2-Methylbut-2-ene [B] 2-Bromo-3-methylbutane [D] Propanone
D
[A] Pent-1-ene [B] 1-Bromopentane [D] Propanoic acid
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