1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
If you spill a chemical toilet cleaning liquid on your hand, your first aid would be
A
aqueous NaOH
B
aqueous NaHCO3
C
aqueous NH3
D
vinegar
2
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
A chemist has 4 samples of artificial sweetener A, B, C and D. To identify these samples, he performed certain experiments and noted the following observations :

(i) A and D both form blue-violet colour with ninhydrin.

(ii) Lassaigne extract of C gives positive AgNO3 test and negative Fe4[Fe(CN)6]3 test.

(iii) Lassaigne extract of B and D gives positive sodium nitroprusside test

Based on these observations which option is correct ?
A
A : Aspartame ; B : Alitame ; C : Saccharin ; D ; Sucralose
B
A : Alitame ; B : Saccharin ; C : Aspartame ; D ; Sucralose
C
A : Aspartame ; B : Saccharin ; C : Sucralose ; D ; Alitame
D
A : Saccharin ; B : Alitame ; C : Sucralose ; D ; Aspartame
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) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Noradrenaline is a/an
A
Antacid
B
Antihistamine
C
Neurotransmitter
D
Antidepressant
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