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1
JEE Main 2021 (Online) 25th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Which of the glycosidic linkage between galactose and glucose is present in lactose?
A
C-1 of galactose and C-6 of glucose
B
C-1 of glucose and C-6 of galactose
C
C-1 of galactose and C-4 of glucose
D
C-1 of glucose and C-4 of galactose
2
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List - I and List - II.

List I List II
(a) Valium (i) Antifertility drug
(b) Morphine (ii) Pernicious anaemia
(c) Norethindrone (iii) Analgesic
(d) Vitamin $${B_{12}}$$ (iv) Tranquilizer
A
(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
B
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
C
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
D
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
3
JEE Main 2021 (Online) 24th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Out of the following, which type of interaction is reponsible for the stabilisation of $$\alpha $$-helix structure of proteins ?
A
Covalent bonding
B
vander Waals forces
C
Ionic bonding
D
Hydrogen bonding
4
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following statements is not true?
A
Lactose contains $$\alpha $$-glycosidic linkage between C1 of galactose and C4 of glucose
B
Lactose is a reducing sugar and it gives Fehling’s test
C
On acid hydrolysis, lactose gives one molecule of D(+)-glucose and one molecule of D(+)-galactose
D
Lactose (C11H22O11) is a disaccharide and it contains 8 hydroxyl groups
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