1
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Which of the following statement is not true for glucose?
A
Glucose gives Schiff's test for aldehyde
B
Glucosse reacts with hydroxylamine to form oxime
C
The pentaacetate of glucose does not react with hydroxylamine to give oxime
D
Glucose exists in two crystalline forms $$\alpha $$ and $$\beta $$
2
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Which of the following statements is correct ?
A
Gluconic acid can from cyclic (acteal/hemiacetal) structure
B
Gluconic acid is a partial oxidation product of glucose
C
Gluconic acid is obtained by oxidation of glucose with (HNO3)
D
Gluconic acid is a dicarboxylic acid.
3
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Match the following :
(i) Riboflavin    (a) Beriberi
(ii) Thiamine    (b) Scurvy
(iii) Pyridoxine   (c) Cheliosis
(iv) Ascorbic acid    (d) Convulsions
A
(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)
B
(i)-(d), (ii)-(b), (iii)-(a), (iv)-(c)
C
(i)-c, (ii)-(a), (iii)-(d), (iv)-(b)
D
(i)-(a), (ii)-(d), (iii)-(c), (iv)-(b)
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Which of the given statements is INCORRECT about glycogen?
A
It is a straight chain polymer similar to amylose
B
It is present in animal cells
C
It is present in some yeast and fungi
D
Only $$\alpha $$-linkages are present in the molecule
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