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1
COMEDK 2024 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement from the following.

A
A tetrahedral complex of the type $$[\mathrm{Ma}_2 \mathrm{b}_2]$$ does not show geometrical isomerism
B
Coordination entities of the type $$[\mathrm{Ma}_3 \mathrm{b}_3]$$ do not exhibit geometrical isomerism
C
Square planar complex  of the type [Mabcd] has 3 possible geometrical isomers
D
In a coordination entity of the type $$[\mathrm{Ma} 2(\mathrm{bb})_2]^{2+}$$ only the cis-isomer is optically active
2
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is diamagnetic?

A
$$\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}$$
B
$$\left[\mathrm{Co}\left(\mathrm{F}_6\right)\right]^{3-}$$
C
$$\left[\mathrm{NiCl}_4\right]^{2-}$$
D
$$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$$
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The complex $$\left[\mathrm{PtCl}_2(\mathrm{en})_2\right]^{2+}$$ ion shows

A
structural isomerism
B
geometrical isomerism only
C
optical isomerism only
D
geometrical and optical isomerism
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The blue colouration obtained from the Lassaigne's test of nitrogen is due to the formation of

A
$$\mathrm{Fe}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3$$
B
$$\mathrm{Fe}_2\left[\mathrm{Fe}(\mathrm{CN})_6\right]_5$$
C
$$\mathrm{K}_2\left[\mathrm{Fe}(\mathrm{CN})_6\right]_5$$
D
$$\mathrm{K}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]_3$$
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