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Questions
1
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1
Which one of the following aqueous solutions gives the most intense colour?
A
$0.1 \mathrm{M}\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_2$
B
$0.1 \mathrm{M}\left[\mathrm{Mn}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3$
C
$0.1 \mathrm{M}\left[\mathrm{Mn}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}$
D
$0.1 \mathrm{M} \mathrm{KMnO}_4$
2
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1

$$ \text { The number of unpaired electron(s) in the square planar complex }[\mathrm{Ni}(\mathrm{CN})]^{2-} \text { is/are } $$

A
2
B
1
C
4
D
0
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