Coordination Compounds are most important to understand for various competitive exams. These Coordination Compounds Class 12 MCQ are most asked in the most competitive exams i.e., IIT, JEE, NEET, AIIMS etc. Basically they are most important for all the pre-medical exams so it is most important to learn the MCQ on coordination compounds.
Coordination Compounds Class 12 MCQ with FREE PDF (Isomerism)
1. A coordination complex [MX2L2], has a CN=4 and two unidentate ligands X and L. When the two L ligands are arranged opposite to each other in its geometry, it is called _______ isomer.
a) cis
b) trans
c) fac
d) mer
Answer: cis
2. How many geometrical isomers are possible in [Al(C2o4)3]3-?
a) 0
b) 2
c) 3
d) 4
Answer: 0
3. How many geometrical isomers are possible in a complex of type [MA2(D)2], where A is unidentate and D is didentate?
a) 0
b) 2
c) 3
d) 4
Answer: 2
4. Which of the following do not show geometrical isomerism? (Assume all ligands are unidentate)
a) Square planar [MXL3]
b) Square planar [MX2L2]
c) Octahedral [MX2L4]
d) Octahedral [MX3L3]
Answer: Square planar [MXL3]
5. In the coordination entity [Co(NH3)3(NO2)3], if all three N atoms of the amine ligands occupy adjacent positions at the corners of an octahedral face, the geometrical isomer formed is known as _______ isomer.
a) cis
b) trans
c) fac
d) mer
Answer: fac
6. Which of the following compounds has a meridional isomer?
a) [Fe(NO)5Br]+
b) [Al(CO)3(NO2)3]
c) [K(NH)3)4(NO)2]+
d) [Fe(H2O)2(CO)2(NO)2]3+
Answer: [Al(CO)3(NO2)3]
7. Optical isomers are also known as __________
a) structural isomers
b) facial isomers
c) meridional isomers
d) enantiomers
Answer: enantiomers
8. The optical isomer that rotates the plane of polarised in the clockwise direction is called ______
a) trans
b) dextro
c) mer
d) laevo
Answer: dextro
9. Two or more compounds that have the same chemical formula, but different arrangement of atoms are called _______
a) isotopes
b) isotones
c) isomers
d) allotropes
Answer: isomers
10. Which type of isomerism exhibits compounds with same chemical formula and bonds but different spatial arrangement?
a) Optical isomerism
b) Linkage isomerism
c) Structural isomerism
d) Solvate isomerism
Answer: Optical isomerism
11. Which of the following is not a subdivision of structural isomerism?
a) Geometrical isomerism
b) Linkage isomerism
c) Coordination isomerism
d) Ionisation isomerism
Answer: Geometrical isomerism
12. Which of the following compounds has enantiomers?
a) K3[Fe(CN)6]
b) K3[Al(C2O4)3]
c) K2[Zn(OH)4]
d) K2[PdCl4]
Answer: K3[Al(C2O4)3]
13. Linkage isomerism is seen in compounds having ________ ligand.
a) unidentate
b) polydentate
c) chelate
d) ambidentate
Answer: ambidentate
14. Which of the following compounds is not a linkage isomer?
a) Hg[Co(SCN)4]
b) [Cr(H2O)5(NO2)]Cl2
c) [CoCl2(en)2]Cl
d) K[Cr(NH3)2(ONO)4]
Answer: [CoCl2(en)2]Cl
15. Which of the following compounds does not have a coordination isomer?
a) [Ag(NH3)2][Ag(CN)2]
b) [Cr(NH3)6][Co(CN)6]
c) [Zn(NH3)4][PtCl4]
d) [Cu(NH3)4][FeCl4]
Answer: [Ag(NH3)2][Ag(CN)2]
16. Identify the coordination isomer of [Fe(CO)4][Zn(CN)4].
a) Tetracyanidozinc(II) tetracarbonylferrate(II)
b) Tetracarbonylzinc(II) tetracyanidoferrate(II)
c) Tetracyanidoiron(II) tetracarbonylzincate(II)
d) Tetracarbonyliron(II) tetracyanidozincate(II)
Answer: Tetracarbonylzinc(II) tetracyanidoferrate(II)
17. The compounds [Co(NH3)5Cl]SO4 and [Co(NH3)5(SO4)]Cl are ________ isomers.
a) linkage
b) coordination
c) ionisation
d) solvate
Answer: ionisation
18. [Co(NH3)5Cl]SO4 + Ag+ = _________
a) AgCl
b) BaSO4
c) white precipitate
d) no reaction
Answer: no reaction
19. The compound [Co(NH3)5(NO2)](NO3)2 does not show _________ isomerism.
a) coordination
b) optical
c) ionisation
d) linkage
Answer: coordination
20. Hydrate isomerism is a form of ________ isomerism.
a) coordination
b) linkage
c) ionisation
d) solvate
Answer: solvate
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