1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The IUPAC name of $$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}$$ is

A
pentaamminecarbonatocobalt (III) chloride
B
carbonatopentamminecobalt (III) chloride
C
pentaamminecarbonatocobaltate (III) chloride
D
pentaammine cobalt (III) carbonate chloride
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Homoleptic complexes among the following are

(A) $$\mathrm{K}_3\left[\mathrm{Al}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]$$

(B) $$\left[\mathrm{CoCl}_2(\mathrm{en})_2\right]^{+}$$

(C) $$\mathrm{K}_2\left[\mathrm{Zn}(\mathrm{OH})_4\right]$$

A
A only
B
A and B only
C
A and C only
D
C only
3
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The correct order for wavelengths of light absorbed in the complex ions $$\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$$ and $$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$ is

A
$$\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}>\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}>\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$
B
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}>\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}>\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}$$
C
$$\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}>\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}>\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$
D
$$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}>\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}>\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}$$
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