1
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
5 g of zinc is treated separately with an excess of

(a) dilute hydrochloric acid and
(b) aqueous sodium hydroxide.

The ratio of the volumes of H2 evolved in these two reactions is :
A
1 : 2
B
1 : 1
C
1 : 4
D
2 : 1
2
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The atomic radius of Ag is closed to :
A
Au
B
Cu
C
Hg
D
Ni
3
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair that has similar atomic radii is :
A
Mo and W
B
Mn and Fe
C
Ti and Hf
D
Sc and Ni
4
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The highest possible oxidation states of uranium and plutonium, respectively are :
A
4 and 6
B
6 and 4
C
7 and 6
D
6 and 7
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