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1
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and P4O10 (in 4 : 1 ratio) is :
A
acidic
B
basic
C
amphoteric
D
neutral
2
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Reagent, 1-napthylamine and sulphanilic acid in acetic acid is used for the detection of
A
N2O
B
NO$$_3^ - $$
C
NO
D
NO$$_2^ - $$
3
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II

List - I
(process)
List - II
(catalyst)
(a) Deacron's process (i) ZSM-5
(b) Contact process (ii) $$CuC{l_2}$$
(c) Cracking of hydrocarbons (iii) Particles 'Ni'
(d) Hydrogenation of vegetable oils (iv) $${V_2}{O_5}$$


Choose the most appropriate answer from the options given below :
A
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
B
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
C
(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
D
(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
4
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
The number of ionisable hydrogens present in the product obtained from a reaction of phosphorus trichloride and phosphonic acid is :
A
3
B
0
C
2
D
1
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