1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

The correct statement with respect to the complexes $$\mathrm{Ni}(\mathrm{CO})_4$$ and $$[\mathrm{Ni}(\mathrm{CN})_4]^{2-}$$ is

A
nickel is in the same oxidation state in both.
B
Both have square planar geometry.
C
have square planar and tetrahedral geometry, respectively.
D
have tetrahedral and square planar geometry, respectively.
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

What is the hybridisation of [CrF6]3$$-$$ ?

A
sp3d
B
sp3d2
C
d2sp3
D
d2sp
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

Select the correct statement about the complex [Co(NH3)5SO4] Br.

A
Its ionisation isomer is [Co(NH3)5Br]SO4.
B
It gives yellow precipitate with AgNO3
C
Its ionisation isomer give while precipitate with BaCl2
D
All the above are correct statements.
4
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Permanganate ion (MnO$$_4^ - $$) is dark purple coloured though Mn is in + 7 oxidation state with d0 configuration. This is due to

A
d-d transition
B
charge transfer from metal to ligand
C
charge transfer from ligand to metal
D
All of the above
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