1
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
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The number of unpaired electron in Mn2+ ion is

A
2
B
3
C
5
D
6
2
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
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The average speed of H2 at T1K is equal to that of O2 at T2K. The ratio T1 : T2 is

A
1 : 16
B
16 : 1
C
1 : 4
D
1 : 1
3
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
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Sodium nitroprusside is :

A
$$N{a_4}[Fe{(CN)_5}N{O_2}]$$
B
$$N{a_2}[Fe{(CN)_5}NO]$$
C
$$N{a_3}[Fe{(CN)_5}NO]$$
D
$$N{a_4}[Fe{(CN)_5}N{O_3}]$$
4
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
Change Language

Choose the correct statement for the [Ni(CN)4]2$$-$$ complex ion (Atomic no. of Ni = 28)

A
The complex is square planar and paramagnetic.
B
The complex is tetrahedral and diamagnetic.
C
The complex is square planar and diamagnetic.
D
The complex is tetrahedral and paramagnetic.
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