1
JEE Main 2024 (Online) 4th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

Common name of Benzene - 1,2 - diol is -

A
catechol
B
quinol
C
o-cresol
D
resorcinol
2
JEE Main 2024 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List - I with List - II.

List I (Reactants) List II (Product)
(A) Phenol, Zn/Δ (I) Salicylaldehyde
(B) Phenol, CHCl3, NaOH, HCl (II) Salicylic acid
(C) Phenol, CO2, NaOH, HCl (III) Benzene
(D) Phenol, Conc. HNO3 (IV) Picric acid

Choose the correct answer from the options given below :
A
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
B
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
C
(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
D
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
3
JEE Main 2024 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: Alcohols react both as nucleophiles and electrophiles.

Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.

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

A
$$A$$ is false but $$R$$ is true.
B
Both $$A$$ and $$R$$ are true but $$R$$ is NOT the correct explanation of $$A$$.
C
Both $$A$$ and $$R$$ are true and $$R$$ is the correct explanation of $$A$$.
D
$$A$$ is true but $$R$$ is false.
4
JEE Main 2024 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $$\mathrm{pK}_{\mathrm{a}}$$ value of phenol is 10.0 while that of ethanol is 15.9 .

Reason R: Ethanol is stronger acid than phenol.

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

A
A is false but R is true.
B
Both $$A$$ and $$R$$ are true but $$R$$ is NOT the correct explanation of $$A$$.
C
Both $$\mathrm{A}$$ and $$\mathrm{R}$$ are true and $$\mathrm{R}$$ is the correct explanation of $$\mathrm{A}$$.
D
$$A$$ is true but $$R$$ is false.
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