Coordination Compounds · Chemistry · KCET

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MCQ (Single Correct Answer)

1

On treating 100 mL of 0.1 M aqueous solution of the complex $\mathrm{CrCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O}$ with excess of $\mathrm{AgNO}_3, 2.86 \mathrm{~g}$ of AgCl was obtained. The complex is

KCET 2024
2

The complex compounds $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{SO}_4\right] \mathrm{Br}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br}\right] \mathrm{SO}_4$ are

KCET 2024
3

Which of the following statements are true about $\left[\mathrm{CoF}_6\right]^{3-}$ ion ?

I. The complex has octahedral geometry.

II. Coordination number of Co is 3 and oxidation state is +6 .

III. The complex is $s p^3 d^2$ hybridised.

IV. It is a high spin complex.

KCET 2024
4

If a didentate ligand ethane-1, 2-diamine is progressively added in the molar ratio en : Ni :: 1: 1, 2 : 1, 3 : 1 to $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$$ aq solution, following co-ordination entities are formed.

I. $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{en}\right]^{2+}(a q)$$ - pale blue

II. $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_2(\mathrm{en})_2\right]^{2+}(\mathrm{aq})$$ - blue/purple

III. $$\left[\mathrm{Ni}(\mathrm{en})_3\right]^{2+}(\mathrm{aq})$$ - violet

The wavelength in $$\mathrm{nm}$$ of light absorbed in case of I and III are respectively

KCET 2023
5

Which of the following is an organometallic compound

KCET 2023
6

When $$\mathrm{FeCl}_3$$ is added to excess of hot water gives a sol '$$X$$'. When $$\mathrm{FeCl}_3$$ is added to $$\mathrm{NaOH}(a q)$$ solution, gives sol '$$Y$$'

$$X$$ and $$Y$$ formed in the above processes respectively are

KCET 2023
7

Which formula and name combination is incorrect?

KCET 2023
8

Which of the following system in an octahedral complex has maximum unpaired electrons?

KCET 2023
9

The correct IUPAC name of cis-platin is

KCET 2022
10

Crystal field splitting energy (CFSE) for $$\left[\mathrm{CoCl}_6\right]^{4-}$$ is $$18000 \mathrm{~cm}^{-1}$$. The crystal field splitting energy (CFSE) for $$\left[\mathrm{CoCl}_4\right]^{2-}$$ will be

KCET 2022
11

The complex hexamineplatinum(IV)chloride will give _____ number of ions on ionisation.

KCET 2022
12

For the crystal field splitting in octahedral complexes,

KCET 2021
13

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

KCET 2021
14

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

KCET 2021
15

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

KCET 2021
16

The coordination number of $$\mathrm{Fe}$$ and $$\mathrm{Co}$$ in the complex ions, $$\left.\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$ and $$\left[\mathrm{Co}(\mathrm{SCN})_4\right]^{2-}$$ are respectively

KCET 2020
17

Number of stereoisomers exhibited by $$\left[\mathrm{Co}(\mathrm{en})_2 \mathrm{Cl}_2\right]^{+}$$ is

KCET 2020
18

Give the IUPAC name of $$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_4\right]\left[\mathrm{Pt} \mathrm{Cl}_4\right]$$ is

KCET 2020
19

Which among the following is the strongest ligand?

KCET 2019
20

The formula of pentaaquanitratochromium (III) nitrate is,

KCET 2019
21
The IUPAC name of $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right] \mathrm{Cl}$ is
KCET 2018
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