1
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

When sugar 'X' is boiled with dilute H2SO4 in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on oxidation with HNO3 yields saccharic acid where as 'B' is laevorotatory. The compound 'X' is :

A
Maltose
B
Sucrose
C
Lactose
D
Starch
2
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Stability of $$\alpha$$-Helix structure of proteins depends upon

A
dipolar interaction
B
H-bonding interaction
C
van der Waals forces
D
$$\pi$$-stacking interaction
3
JEE Main 2022 (Online) 27th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements.

Statement I : Maltose has two $$\alpha$$-D-glucose units linked at C1 and C4 and is a reducing sugar.

Statement II : Maltose has two monosaccharides : $$\alpha$$-D-glucose and $$\beta$$-D-glucose linked at C1 and C6 and it is a non-reducing sugar.

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.
4
JEE Main 2022 (Online) 27th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

L-isomer of a compound 'A' (C4H8O4) gives a positive test with [Ag(NH3)2]+. Treatment of 'A' with acetic anhydride yields triacetate derivative. Compound 'A' produces an optically active compound (B) and an optically inactive compound (C) on treatment with bromine water and HNO3 respectively. Compound (A) is :

A
JEE Main 2022 (Online) 27th June Morning Shift Chemistry - Biomolecules Question 53 English Option 1
B
JEE Main 2022 (Online) 27th June Morning Shift Chemistry - Biomolecules Question 53 English Option 2
C
JEE Main 2022 (Online) 27th June Morning Shift Chemistry - Biomolecules Question 53 English Option 3
D
JEE Main 2022 (Online) 27th June Morning Shift Chemistry - Biomolecules Question 53 English Option 4
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