1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which complex among the follwing is most paramagnetic?
A
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{2+}$
B
$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$
C
$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$
D
$\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
2
AP EAPCET 2024 - 22th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the complexes in List-I with their hybridisation in list-II.

List-I
(Complex)
List-II
(Hybridisation)
I $$
\mathrm{Ni}(C O)_4
$$
A $$
s p^3 d^2
$$
II $$
\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}
$$
B $$
d^2 s p^3
$$
III $$
\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}
$$
C $$
d s p^2
$$
IV $$
\left[\mathrm{CoF}_6\right]^{3-}
$$
D $$
s p^3
$$
A
I-C, II-D, III-A, IV - B
B
I-D, II-C, III-A, IV - B
C
I-D, II-C, III-B, IV - A
D
I-C, II-D, III-B, IV - A
3
AP EAPCET 2024 - 21th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Cobalt (III) chloride forms a green coloured complex ' $X$ ' with $\mathrm{NH}_3$. Number of moles of AgCl formed when excess of $\mathrm{AgNO}_3$ solution is added to 100 mL of 1 M solution of ' $X$ ' is
A
0.3
B
0.2
C
0.1
D
1
4
AP EAPCET 2024 - 21th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Improve silver ore $+\mathrm{CN}^{-}+\mathrm{H}_2 \mathrm{O} \xrightarrow{\mathrm{O}_2}[\mathrm{X}]^{-}+\mathrm{OH}^{-}$

$$ [X]^{-}+\mathrm{Zn} \longrightarrow[Y]^{2-}+\mathrm{Ag} \text { (pure) } $$

The co-ordination numbers of the metals in $[X]$. [ $Y$ ] are respectively

A
3,4
B
1,4
C
4,2
D
2,4
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