CBSE Class 12 Chemistry Coordination Compounds Worksheet Set B

Question. In K4 Fe (CN)₆ ?
a. (CN) are linked with primary valency
b. (CN) are linked with secondary valency
c. K are linked with secondary valency
d. K are linked with non-ionic valency
Answer : B

Question. Which of the following acts as a bidentate ligand in complex formation?
a. Acetate
b. Oxalate
c. Thiocyanate
d. EDTA
Answer : B

Question. What is the co-ordination number of the metal in [Co (en)₂ Cl₂]⁺?
a. 4
b. 5
c. 6
d. 3
Answer : C

Question. The coordination number of a metal in coordination compounds is:
a. Same as primary valency
b. Sum of primary and secondary valencies
c. Same as secondary valency
d. None of these
Answer : C

Question. The number of ions formed when cuprammonium
a 1
b. 2
c. 4
d. Zero
Answer : B

Question. The coordination number of a central metal atom in a complex is determined by:
a. The number of ligands around a metal ion bonded by sigma and pi-bonds both.
b. The number around a metal ion bonded by pi-bonds
c. The number of ligands around a metal ion bonded by sigma bonds
d. The number of only anionic ligands bonded to the metal ion
Answer : C

Question. EDTA has coordination number:
a. 3
b. 4
c. 5
d. 6
Answer : D

Question. Coordination number of Zn in ZnS (zinc blende) is:
a. 6
b. 4
c. 8
d. 12
vAnswer : B

Question. The number of neutral molecules or negative groups attached to the central metal atom in a complex ion is called:
a. Atomic number
b. Effective atomic number
c. Coordination number
d. Primary valency
Answer : C

Question. The formula of alum is:
a. K₂SO .Al (SO4)₂ .24H₂ O
b. K₂[Fe(CN)₆]
c. K4SO .Al (SO ) .6H₂ O
d. Na₂CO .+ 10H O
Answer : A

Question. How many ions are produced in aqueous solution of [Co(H₂O) ]Cl ?
a. 2
b. 3
c. 4
d. 6
Answer : B

Question. In K4 [Fe (CN)₆],the E.A.N. of Fe is:
a. 33
b. 35
c. 36
d. 26
Answer : C

Question. The oxidation state of cobalt in the complex compound [Co (NH₃)₆]Cl₃ is:
a. + 3
b. + 6
c. + 5
d. + 2
Answer : A

Question. The oxidation number of Pt in [Pt(C₂H )C− is:
a. + 1
b. + 2
c. + 3
d. + 4
Answer : B

Question. The effective atomic number of cobalt in the complex [Co(NH₃)₆]³⁺ is:
a. 36
b. 33
c. 24
d. 30
Answer : A

Question. The EAN of iron in potassium ferricyanide is:
a. 18
b. 54
c. 35
d. 23
Answer : C

Question. Oxidation state of Fe in K_3[Fe(CN)₆] ?
a. 2
b. 3
c. 0
d. None of these
Answer : B

Question. IUPAC name of [Co(NH₃) NO ]Cl ?
a. Pentamminenitrocobalt (III) chloride
b. Pentamminenitrosocobalt (III) chloride
c. Pentamminenitrocobalt (II) chloride
d. None of these
Answer : A

Question. The IUPAC name of 3 [Cr(NH5) ] + is:
a. Hexamminechromium (VI) ion
b. Hexamminechromium (III) ion
c. Hexamminechromium (II) ion
d. Hexamminechloride
Answer : B

Question. The value of x which appears in the complex [Ni CN4]₂ is:
a. + 2
b. – 2
c. 0
d. 4
Answer : B

Question. Which one of the following octahedral complexes will not show geometric isomerism? (A and B are monodentate ligands)
a. 5 [MA B]
b. 2 4 [MA B]
c. 3 3 [MA B]
d. 4 2 [MA B]
Answer : B

Question. [Co(NH₃)₅Br] SO₄ and [Co(NH₃)₅SO₄ Br are examples of which type of isomerism:
a. Linkage
b. Geometrical
c. Ionization
d. Optical
Answer : A

Question. Which would exhibit ionisation isomerism?
a. [Cr NH ]Cl
b. [Co NH Br]SO
c. [Cr(en)₂Cl₂]
d. [Cr(en) Cl₃]
Answer : C

Question. Which one of the following will not show geometrical isomerism?
a. [Cr(NH₃)4Cl₂]Cl
b. [Co(en)₂ Cl₂ 2]Cl
c. [Co(NH₃) NO ]Cl
d. [Pt(NH₃)₂ Cl₂]
Answer : C

Question. [Co(NH₃)₄ Cl₂ ]⁺ exhibits:
a. Geometrical isomerism
b. Optical isomerism
c. Bonding isomerism
d. Ionisation isomerism
Answer : A

Question. The number of geometrical isomers for [Pt(NH₃)₂Cl₂] is:
a. Two
b. One
c. Three
d. Four
Answer : A

Question. The total number of possible isomers for the complex compound [Cu^II (NH₃)₄ ][Pt^IICl ] are:
a. 3
b. 4
c. 5
d. 6
Answer : A

Question. Which of the following compounds is colourless?
a. Cu₂(CH₂COO)_{4 .}2H₂O
b. Cu₂Cl₂
c. CuSO₄.5H₂O
d. [Cu(NH₃)₄]SO₄.4H₂O
Answer : A

Question. Which of the following complex will give white precipitate with BaCl₂ (aq.) ?
a. [Co(NH₃)₄SO4]NO₂
b. [Cr (NH₃)₅SO₄]Cl
c. [Cr(NH₃)₃Cl]SO₄
d. Both b and c
Answer : C

Question. In coordination compound [Co(en)₂ Cl₂]Cl which is false:
a. Show geometrical Isomerism
b. Show optical Isomerism
c. Show ionic Isomerism
d. A octahedral complex
Answer : C

Question. One mole of the complex compound Co(NH₃)₅Cl₃, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO3 solution to yield two moles of AgCl(s). The structure of the complex is:
a. [Co(NH₃)₅ Cl]Cl₂
b. [Co(NH₃)₃ Cl₃]. 2NH₃
c. [Co(NH3)₄ Cl₂]Cl. NH₃
d. [Co(NH₃)₄ Cl]Cl₂. NH₃
Answer : A

Question. The shape of [Fe (CN)₆]^4– ion is:
a. Hexagonal
b. Pyrimidal
c. Octahedral
d. Octagonal
Answer : 4.

Question. The geometry of Ni (CO)₄ and Ni (PPh₃)₂ Cl₂ are:
a. Both square planar
b. Tetrahedral and square planar respectively
c. Both tetrahedral
d. Square planar and tetrahedral respectively
Answer : D

Question. Which of the following shall form an octahedral complex?
a. d⁴ (low spin)
b. d⁸ (high spin)
c. d⁶ (low spin)
d. None of these
Answer : D

Question. CN– is a strong field ligand. This is due to the fact that:
a. It can accept electron from metal species
b. It forms high spin complexes with metal species
c. It carries negative charge.
d. It is a pseudohalide
Answer : D

Question. Which of the following complexes has the highest stability constant at 298 K?
a. [CdCl⁴]^2–
b. [CdBr⁴]^2–
c. [CdI⁴]^2–
d. [Cd (CN)⁴]^2–
Answer : D

CBSE Class 12 Chemistry Coordination Compounds Worksheet Set B

              Very Short Answer

Q1)       Define crystal field splitting?

Q2)       What is the oxidation number of central atom?

Q3)       Where we can find the gem ruby?

Q4)       How can we measure the magnetic moment of the coordination compounds?

Q5)       What is spectrochemical series?

              Short Answer

Q6)       What are the limitations of the crystal field theory?

Q7)       Why nomenclature is important in coordination chemistry?

Q8)       Distinguish between cis isomers and trans isomers?

Q9)       What are the limitations of the valence bond theory?

Q10)     Distinguish between homoleptic complex and hetroleptic complexes?

              Long Answer

Q11)     What are the applications of coordination compounds?

Q12)     Write short note on crystal field theory?

Q13)     Explain about isomerism and types of isomerism

Q14)     Write short note on valence bond theory?

Q15)     State the difference between crystal field theory and ligand field theory?

Please click on below link to download CBSE Class 12 Chemistry Coordination Compounds Worksheet Set B