1
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

All structures given below are of vitamin C. Most stable of them is :

A
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Biomolecules Question 40 English Option 1
B
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Biomolecules Question 40 English Option 2
C
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Biomolecules Question 40 English Option 3
D
JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Biomolecules Question 40 English Option 4
2
JEE Main 2023 (Online) 1st February Evening 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) : $$\alpha$$-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 Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct representation in six membered pyranose form for the following sugar [X] is

JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 38 English

A
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 38 English Option 1
B
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 38 English Option 2
C
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 38 English Option 3
D
JEE Main 2023 (Online) 1st February Morning Shift Chemistry - Biomolecules Question 38 English Option 4
4
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
Test Functional group / Class of Compound
A. Molisch's Test I. Peptide
B. Biuret Test II. Carbohydrate
C. Carbylamine Test III. Primary amine
D. Schiff's Test IV. Aldehyde

Choose the correct answer from the options given below :

A
(A) - III, (B) - IV, (C) - II, (D) - I
B
(A) - II, (B) - I, (C) - III, (D) - IV
C
(A) - III, (B) - IV, (C) - I, (D) - II
D
(A) - I, (B) - II, (C) - III, (D) - IV
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12