3
MCQ (Single Correct Answer)
When $0.1 \mathrm{~mol} \mathrm{CoCl}{ }_3\left(\mathrm{NH}_3\right)_5$ is treated with excess of $\mathrm{AgNO}_3, 0.2 \mathrm{~mol}$ of AgCl are obtained. The conductivity of solution will correspond to
A
$1:3$ electrolyte
B
$1:2$ electrolyte
C
$1:1$ electrolyte
D
$3: 1$ electrolyte
4
MCQ (Single Correct Answer)
When 1 mole of $\mathrm{CrCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O}$ is treated with excess of $\mathrm{AgNO}_3, 3$ moles of AgCl are obtained. The formula of the complex is
A
$\left[\mathrm{CrCl}_3\left(\mathrm{H}_2 \mathrm{O}\right)_3\right] \cdot 3 \mathrm{H}_2 \mathrm{O}$
B
$\left[\mathrm{CrCl}_2\left(\mathrm{H}_2 \mathrm{O}\right)_4\right] \mathrm{Cl} \cdot 2 \mathrm{H}_2 \mathrm{O}$
C
$\left[\mathrm{CrCl}\left(\mathrm{H}_2 \mathrm{O}\right)_5\right] \mathrm{Cl}_2 \cdot \mathrm{H}_2 \mathrm{O}$
D
$\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3$
5
MCQ (Single Correct Answer)
The correct IUPAC name of $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]$ is
A
Diamminedichloridoplatinum (II)
B
Diamminedichloridoplatinum (IV)
C
Diamminedichloridoplatinum (0)
D
Dichloridodiammineplatinum (IV)
6
MCQ (Single Correct Answer)
The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?
A
$\left[\mathrm{Fe}(\mathrm{CO})_5\right]$
B
$\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$
C
$\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$
D
$\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
7
MCQ (Single Correct Answer)
Indicate the complex ion which shows geometrical isomerism.
A
$\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_4 \mathrm{Cl}_2\right]^{+}$
B
$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}\right]$
C
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$
D
$\left[\mathrm{Co}(\mathrm{CN})_5(\mathrm{NC})\right]^{3-}$