1
KCET 2025
MCQ (Single Correct Answer)
+1
-0

A ligand which has two different donor atoms and either of the two ligates with the central metal atom/ion in the complex is called ___________

A
Chelate ligand
B
Unidentate ligand
C
Polydentate ligand
D
Ambidentate ligand
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0

Which of the following statements are true about $\left[\mathrm{NiCl}_4\right]^{2-}$ ?

(a) The complex has tetrahedral geometry

(b) Co-ordination number of Ni is 2 and oxidation state is +4

(c) The complex is $\mathrm{sp}^3$ hybridised

(d) It is a high spin complex

(e) The complex is paramagnetic

A
a,c,d and e
B
a,b,d and e
C
b,c,d and e
D
a,b,c and d
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0

$$ \text { Which formula and its name combination is incorrect? } $$

A
$\mathrm{K}_3\left[\mathrm{Cr}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]$, Potassium trioxalatochromate (III)
B
$\left[\mathrm{CoCl}_2(\mathrm{en})_2\right] \mathrm{Cl}$, Dichloridobis (ethane - 1,2 - dimine) cobalt (III) chloride
C
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{CO}_3\right)\right] \mathrm{Cl}$, Pentaamine carbonylcobalt (III) chloride
D
$\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}\left(\mathrm{NO}_2\right)\right]$ Diamine chloridonitrito - N - Platinum (II)
4
KCET 2025
MCQ (Single Correct Answer)
+1
-0

$$ \text { In the complex ion }\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-} \text {, the co-ordination number of } \mathrm{Fe} \text { is } $$

A
4
B
5
C
6
D
3
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