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1
NEET 2023
MCQ (Single Correct Answer)
+4
-1

Homoleptic complex from the following complexes is :

A
Diamminechloridonitrito-N-platinum (II)
B
Pentaamminecarbonatocobalt (III) chloride
C
Triamminetriaquachromium (III) chloride
D
Potassium trioxalatoaluminate (III)
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1

Which complex compound is most stable?

A
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3}\left(\mathrm{NO}_{3}\right)_{3}\right]$$
B
$$\left[\mathrm{CoCl}_{2}(\mathrm{en})_{2}\right] \mathrm{NO}_{3}$$
C
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]_{2}\left(\mathrm{SO}_{4}\right)_{3}$$
D
$$\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4}\left(\mathrm{H}_{2} \mathrm{O}\right) \mathrm{Br}\right]\left(\mathrm{NO}_{3}\right)_{2}$$
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Match List-I with List-II :

List-I
(Complexes)		 List-II
(Types)
(a) $$[Co{(N{H_3})_5}N{O_2}]C{l_2}$$ and $$[Co{(N{H_3})_5}ONO]C{l_2}$$ (i) ionisation isomerism
(b) $$[Cr{(N{H_3})_6}][Co{(CN)_6}]$$ and $$[Cr{(CN)_6}][Co{(N{H_3})_6}]$$ (ii) coordination isomerism
(c) $$[Co{(N{H_3})_5}(S{O_4})]Br$$ and $$[Co{(N{H_3})_5}Br]S{O_4}$$ (iii) linkage isomerism
(d) $$[Cr{({H_2}O)_6}]C{l_3}$$ and $$[Cr{({H_2}O)_5}Cl]C{l_2}\,.\,{H_2}O$$ (iv) solvate isomerism

Choose the correct answer from the options given below :

A
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
B
(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
C
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
D
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The metal carbon bond in metal carbonyls possesses both $$\sigma$$ and $$\pi$$ character.

Reason (R) : The ligand to metal bond is a $$\pi$$ bond and metal to ligand bond is a $$\sigma$$ bond.

In the light of the above statements, choose the most appropriate answer from the options given below.

A
(A) is not correct but (R) is correct
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D
(A) is correct but (R) is not correct
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