Physical Chemistry
Some Basic Concepts of Chemistry
MCQ (Single Correct Answer)
Chemical Equilibrium
MCQ (Single Correct Answer)
Inorganic Chemistry
Periodic Table and Periodicity
MCQ (Single Correct Answer)
Chemical Bonding and Molecular Structure
MCQ (Single Correct Answer)
Hydrogen and It's Compounds
MCQ (Single Correct Answer)
d and f Block Elements
MCQ (Single Correct Answer)
Coordination Compounds
MCQ (Single Correct Answer)
Environmental Chemistry
MCQ (Single Correct Answer)
Organic Chemistry
IUPAC Nomenclatures
MCQ (Single Correct Answer)
General Organic Chemistry
MCQ (Single Correct Answer)
Haloalkanes and Haloarenes
MCQ (Single Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehyde and Ketone
MCQ (Single Correct Answer)
Carboxylic Acids and Its Derivatives
MCQ (Single Correct Answer)
Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
Practical Organic Chemistry
MCQ (Single Correct Answer)
1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

4 statements are given below. Identify the incorrect statement

A. Phenol has lower $$\mathrm{pK}_{\mathrm{a}}$$ value than $$\mathrm{p}$$-cresol

B. 2-Chlorophenol is more acidic than phenol

C. Ortho and para nitrophenols can be separated by steam distillation since $$\mathrm{p}$$-Nitrophenol is more steam volatile than o-Nitrophenol

D. Phenol on reaction with $$\frac{\mathrm{Cr}_2 \mathrm{O}_7^{2-}}{\mathrm{H}^{+}}$$ yields a conjugated diketone

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

Two statements, Assertion and Reason are given below. Choose the correct option.

Assertion: n-propyl tert-butyl ether can be readily prepared in the laboratory by Williamson's synthesis.

Reason: The reaction occurs by $$\mathrm{S}_{\mathrm{N}} 1$$ attack of Primary alkoxide on Tert-alkyl halide to give good yield of the product, n-propyl tert-butyl ether.

A
Assertion is incorrect bur reason is correct.
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
C
Assertion is correct but Reason is incorrect.
D
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Compounds $$\mathrm{A}$$ and $$\mathrm{B}$$, having the same molecular formula $$(\mathrm{C}_4 \mathrm{H}_8 \mathrm{O})$$, react separately with $$\mathrm{CH}_3 \mathrm{MgBr}$$, followed by reaction with dil. $$\mathrm{HCl}$$ to form compounds $$\mathrm{X}$$ and $$\mathrm{Y}$$ respectively. Compound $$\mathrm{Y}$$ undergoes acidic dehydration in presence of Conc. $$\mathrm{H}_2 \mathrm{SO}_4$$ much more readily than $$\mathrm{X}$$. Compound $$\mathrm{Y}$$ also reacts with Lucas reagent, much more readily than $$\mathrm{X}$$, with appearance of turbidity. Identify $$\mathrm{X}$$ and $$\mathrm{Y}$$.

A
$$ \mathrm{X}=\text { Pentan }-1-\mathrm{ol} \quad \mathrm{Y}=\text { Pentan }-2-\mathrm{ol} $$
B
$$ \mathrm{X}=\text { Butan-2-ol } \quad \mathrm{Y}=\text { 2-Methylpropan-2-ol } $$
C
$$ \mathrm{X}=\text { Pentan-1-ol } \quad \mathrm{Y}=2-\text { Methylpentan-2-ol } $$
D
$$ \mathrm{X}=\text { Pentan-2-ol } \quad \mathrm{Y}=2 \text {-Methylbutan-2-ol } $$
4
COMEDK 2024 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

The major product '$$\mathrm{X}$$' of the following reaction is

COMEDK 2024 Afternoon Shift Chemistry - Alcohol, Phenols and Ethers Question 4 English

A
3, 3-dimethylpent-1-ene
B
3, 4-dimethylpent-1-ene
C
2, 3-dimethylpent-2-ene
D
3-methylpent-2-ene
COMEDK Subjects