1
JEE Main 2023 (Online) 1st February Evening Shift
+4
-1

In a reaction,

reagents 'X' and 'Y' respectively are :

A
$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$
B
$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$
C
$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$
D
$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$
2
JEE Main 2023 (Online) 1st February Evening Shift
+4
-1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : $$\alpha$$-halocarboxylic acid on reaction with dil. $$\mathrm{NH_3}$$ gives good yield of $$\alpha$$-amino carboxylic acid whereas the yield of amines is very low when prepared from alkyl halides.

Reason (R) : Amino acids exist in zwitter ion form in aqueous medium.

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

A
(A) is not correct but (R) is correct
B
(A) is correct but (R) is not correct
C
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D
Both (A) and (R) are correct and (R) is the correct explanation of (A)
3
JEE Main 2023 (Online) 1st February Evening Shift
+4
-1

The structures of major products A, B and C in the following reaction are sequence.

A
B
C
D
4
JEE Main 2023 (Online) 1st February Morning Shift
+4
-1

Identify the incorrect option from the following

A
B
C
D
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