1
JEE Main 2023 (Online) 29th January Morning Shift
MCQ (Single Correct Answer)
+4
-1

Number of cyclic tripeptides formed with 2 amino acids A and B is :

A
2
B
3
C
5
D
4
2
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match items of Row I with those of Row II.

Row I :

JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Biomolecules Question 3 English

Row II :

(i) $$\alpha$$-$$\mathrm{D}$$-$$(-)$$-$$\mathrm{Fructofuranose}$$

(ii) $$\beta$$-D-$$(-)$$-Fructofuranose

(iii) $$\alpha$$-D-$$(-)$$ Glucopyranose

(iv) $$\beta$$-D-$$(-)$$-Glucopyranose

Correct match is

A
A $$\to$$ iii, B $$\to$$ iv, C $$\to$$ i, D $$\to$$ ii
B
A $$\to$$ iv, B $$\to$$ iii, C $$\to$$ i, D $$\to$$ ii
C
A $$\to$$ i, B $$\to$$ ii, C $$\to$$ iii, D $$\to$$ iv
D
A $$\to$$ iii, B $$\to$$ iv, C $$\to$$ ii, D $$\to$$ i
3
JEE Main 2022 (Online) 29th July 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: Amylose is insoluble in water.

Reason R: Amylose is a long linear molecule with more than 200 glucose units.

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

A
$$\mathbf{A}$$ Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are correct and $$\mathbf{R}$$ is the correct explanation of $$\mathbf{A}$$.
B
Both $$\mathbf{A}$$ and $$\mathbf{R}$$ are correct but $$\mathbf{R}$$ is NOT the correct explanation of $$\mathbf{A}$$.
C
$$\mathbf{A}$$ is correct but $$\mathbf{R}$$ is not correct
D
$$\mathbf{A}$$ is not correct but $$\mathbf{R}$$ is correct.
4
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Two statements in respect of drug-enzyme interaction are given below

Statement I : Action of an enzyme can be blocked only when an inhibitor blocks the active site of the enzyme.

Statement II : An inhibitor can form a strong covalent bond with the enzyme.

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

A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
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