Q. The sum of coordination number of oxidation number of the metal M in the complex [M(en)2 C2O4] Cl are
✅ Correct Answer: (D)
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Coordination Compounds MCQs with answers
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Q. Which of the following will not give test for Cl– with AgNO3(aq) at 25°C?
✅ Correct Answer: (C)
COCl3.3NH3
Q. Which of these statements about [Co(CN)6]3- is true?
✅ Correct Answer: (C)
No unpaired electron, low spin
Q. The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with complexes: COCl3.6NH3, C0Cl3.5NH3, C0Cl3.4NH3 respectively is
✅ Correct Answer: (B)
3AgCl, 2AgCl, 1AgCl
Q. Pick out the correct statement with respect to [Mn(CN)J2-
✅ Correct Answer: (D)
It is d²sp3 hybridised, octahedral
Q. The pair having the same magnetic moment is (At No. Cr = 24, Mn = 25, Fe = 26, Co = 27)
✅ Correct Answer: (B)
[Cr(H2O)6]2+ and [Fe (H2O)6]2+
Q. On treatment of 100 mL of 0.1 MCOCl3.6H2O with excess of AgNO3, 1.2 × 1022 ions are precipitated. The complex is
✅ Correct Answer: (D)
[Co(H2O)5 Cl] Cl2.H2O
Q. Among the ligands NH3, en, CN and CO, the correct order of field strength is
✅ Correct Answer: (A)
NH3 < en < CN– < CO
Q. The stabilisation of coordination compounds due to chelation is called the chelate effect. Which of the following is the most stable complex species?
✅ Correct Answer: (C)
[Fe(C2O4)3]3-
Q. Indicate the complex ion which shows geometrical isomerism.
✅ Correct Answer: (A)
[Cr(H2O)4Cl2]+
Q. The CFSE for octahedral [CoCl6]4- is 18,000 cm-1. The CFSE for tetrahedral [CoCl4]2- will be
✅ Correct Answer: (C)
8,000 cm-1
Q. Due to the presence of ambidentate ligands coordination compounds show isomerism. Palladium complexes of the type [Pd(C6H5)2(SCN)2] and [Pd(C6H5)2(NCS)2] are
✅ Correct Answer: (A)
linkage isomers
Q. The compounds [Co(SO4)(NH3)5]Br and [CO(SO4)(NH3)5]Cl represent
✅ Correct Answer: (B)
ionisation isomerism
Q. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?
✅ Correct Answer: (A)
thiosulphato
Q. The solution of the complex [Cu(NH3)4] SO4 in water will
✅ Correct Answer: (C)
give the tests of SO42- ions
Q. IUPAC name of [Pt(NH3)3 Br (NO2) Cl] Cl is
✅ Correct Answer: (D)
triamminebromidochloridonitroplatinum (IV) chloride
Q. Match the coordination compounds given in Column I with the central metal atoms given in Column II and assign the correct code:
Column I Column II
(Coordination compound) (Central metal atom)
(A) Chlorophyll (1) rhodium
(B) Blood pigment (2) cobalt
(C) Wilkinson catalyst (3) calcium
(D) Vitamin B (4) iron
(5) magnesium
Column I Column II
(Coordination compound) (Central metal atom)
(A) Chlorophyll (1) rhodium
(B) Blood pigment (2) cobalt
(C) Wilkinson catalyst (3) calcium
(D) Vitamin B (4) iron
(5) magnesium
✅ Correct Answer: (A)
A (5) B (4) C (1) D (2)
Q. In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
✅ Correct Answer: (A)
Assertion and reason both are hue, reason is correct explanation of assertion.
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