1
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
2
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
3
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

An aromatic hydrocarbon $$[\mathrm{A}]\left(\mathrm{Molecular}\right.$$ formula $$\left.\mathrm{C}_9 \mathrm{H}_{12}\right)$$, undergoes air oxidation followed by reaction with dil. $$\mathrm{HCl}$$ to give [B] as one of the products

Compound [B] forms a white precipitate on treatment with $$\mathrm{Br}_2(\mathrm{aq})$$

Sodium salt of [B] reacts with $$\mathrm{CO}_2$$ at $$400 \mathrm{~K}$$ under high pressure followed by acid hydrolysis to give [C]

Compound [C] reacts with acetic anhydride / conc. $$\mathrm{H}_2 \mathrm{SO}_4$$ to form [D] Identify compound $$[\mathrm{D}]$$

A
COMEDK 2024 Morning Shift Chemistry - Hydrocarbons Question 4 English Option 1
B
COMEDK 2024 Morning Shift Chemistry - Hydrocarbons Question 4 English Option 2
C
COMEDK 2024 Morning Shift Chemistry - Hydrocarbons Question 4 English Option 3
D
COMEDK 2024 Morning Shift Chemistry - Hydrocarbons Question 4 English Option 4
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Ammoniacal silver nitrate forms a white precipitate easily with

A
$$\mathrm{CH}_3 \mathrm{C}=\mathrm{CH}$$
B
$$\mathrm{CH}_3 \mathrm{C}=\mathrm{CCH}_3$$
C
$$\mathrm{CH}_3 \mathrm{CH}=\mathrm{CH}_2$$
D
$$\mathrm{CH}_2=\mathrm{CH}_2$$
COMEDK Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12