JEE Main 2023 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-1

In a reaction,

JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 19 English

reagents 'X' and 'Y' respectively are :

$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$

$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$

$$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$ and $$\mathrm{CH}_{3} \mathrm{OH} / \mathrm{H}^{+}, \Delta$$

$$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$ and $$\left(\mathrm{CH}_{3} \mathrm{CO}\right)_{2} \mathrm{O} / \mathrm{H}^{+}$$

JEE Main 2023 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-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) is not correct but (R) is correct

(A) is correct but (R) is not correct

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

Both (A) and (R) are correct and (R) is the correct explanation of (A)

JEE Main 2023 (Online) 1st February Evening Shift

MCQ (Single Correct Answer)

-1

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

JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 17 English