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1
JEE Main 2022 (Online) 29th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

Sugar moiety in DNA and RNA molecules respectively are

A
$$\beta$$-D-2-deoxyribose, $$\beta$$-D-deoxyribose.
B
$$\beta$$-D-2-deoxyribose, $$\beta$$-D-ribose
C
$$\beta$$-D-ribose, $$\beta$$-D-2-deoxyribose.
D
$$\beta$$-D-deoxyribose, $$\beta$$-D-2-deoxyribose.
2
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

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
3
JEE Main 2022 (Online) 27th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

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) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Hindi

Match List-I with List-II

List - I
Enzyne
List - II
Conversion of
A. Invertase I. Starch into maltose
B. Zymase II. Maltose into glucose
C. Diastase III. Glucose into ethanol
D. Maltase IV. Cane sugar into glucose

Choose the most appropriate answer from the options given below :

A
A-III, B-IV, C-II, D-I
B
A-III, B-II, C-I, D-IV
C
A-IV, B-III, C-I, D-II
D
A-IV, B-II, C-III, D-I
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