1
JEE Main 2021 (Online) 26th February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Which one of the following lanthanoids does not form MO2? [M is lanthanoid metal]
A
Nd
B
Dy
C
Yb
D
Pr
2
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Mischmetal is an alloy consisting mainly of :
A
lanthanoid and actinoid metals
B
actinoid and transition metals
C
lanthanoid metals
D
actinoid metals
3
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
The lanthanoid that does NOT show +4 oxidation state is :
A
Tb
B
Dy
C
Ce
D
Eu
4
JEE Main 2020 (Online) 6th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
The set that contains atomic numbers of only transition elements, is :
A
21, 32, 53, 64
B
9, 17, 34, 38
C
37, 42, 50, 64
D
21, 25, 42, 72
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