1
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
The nature of oxides V2O3 and CrO is indexed as 'X' and 'Y' type respectively. The correct set of X and Y is :
A
X = basic Y = amphoteric
B
X = amphoteric Y = basic
C
X = acidic Y = acidic
D
X = basic Y = basic
2
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
The incorrect statement is :
A
Cl2 is more reactive than ClF.
B
F2 is more reactive than ClF.
C
On hydrolysis ClF forms HOCl and HF.
D
F2 is a stronger oxidizing agent than Cl2 in aqueous solution.
3
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
The oxidation states of 'P' in H4P2O7, H4P2O5 and H4P2O6, respectively, are :
A
7, 5 and 6
B
5, 4 and 3
C
5, 3 and 4
D
6, 4 and 5
4
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II :

List - I List - II
(a) NaOH (i) Acidic
(b) $$Be{(OH)_2}$$ (ii) Basic
(c) $$Ca{(OH)_2}$$ (iii) Amphoteric
(d) $$B{(OH)_3}$$
(e) $$Al{(OH)_3}$$


Choose the most appropriate answer from the options given below
A
(a)-(ii), (b)-(ii), (c)-(iii), (d)-(ii), (e)-(iii)
B
(a)-(ii), (b)-(iii), (c)-(ii), (d)-(i), (e)-(iii)
C
(a)-(ii), (b)-(ii), (c)-(iii), (d)-(i), (e)-(iii)
D
(a)-(ii), (b)-(i), (c)-(ii), (d)-(iii), (e)-(iii)
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