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1
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Incorrect method of preparation for alcohols from the following is:

A
Hydroboration-oxidation of alkene.
B
Reaction of Ketone with $$\mathrm{RMgBr}$$ followed by hydrolysis.
C
Ozonolysis of alkene.
D
Reaction of alkyl halide with aqueous $$\mathrm{NaOH}$$.
2
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Suitable reaction condition for preparation of Methyl phenyl ether is

A
Benzene, MeBr
B
$$\mathrm{Ph{O^\Theta }N{a^ \oplus }}$$, MeBr
C
Ph - Br, $$\mathrm{Me{O^\Theta }N{a^ \oplus }}$$
D
$$\mathrm{Ph{O^\Theta }N{a^ \oplus }}$$, MeOH
3
JEE Main 2023 (Online) 8th April 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: Butan -1- ol has higher boiling point than ethoxyethane.

Reason R: Extensive hydrogen bonding leads to stronger association of molecules.

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 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The water gas on reacting with cobalt as a catalyst forms

A
Methanoic acid
B
Methanol
C
Methanal
D
Ethanol
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