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Coordination Compounds

Coordination compounds for GATE, IIT-JEE, CSIR NET, and other competitive exams covering isomerism, ligands, crystal field theory, hybridization, and stability constants

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following sets is an example of double salt?

  1. Fischer salt, zeise’s salt, gmelin’s salt
  2. Magnus’ green salt, turnbull’s blue, mohr salt
  3. Glauber’s salt, microcosmic salt, carnallite
  4. Potash alum, mohr salt, gmelin’s salt
  5. Tutton salts, bromlite, peyrone's salt
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are true?
A. Metal carbonyl and Zeisse’s salt are the example of organometallic compounds.
B. Wilkinson’s catalyst contains Ti+4 as the metal cation.
C. Cobalt as Co+3 is present in vitamin B12.

  1. Only A
  2. Only B
  3. Only C
  4. A and B
  5. B and C
Question 3 Multiple Choice (Single Answer)

In coordination complexes, the hydrate isomers differ
A. in the number of water molecules of hydration only
B. in the number of water molecules only present as ligands
C. in their coordination number of the metal atom

  1. Only A
  2. Only B
  3. Both 1 and 2
  4. Only C
  5. All of these
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/are incorrect?
A. The complex ion trans-dichloro bis (ethylenediamine) rhodium (III) is optical active.
B. Secondary valancies are non-directional whereas primary valencies are directional.
C. Both geometrical and optical isomerisms are shown by [Co(en)2Cl2]+.

  1. Only A
  2. Only B
  3. Both 1 and 2
  4. Only C
  5. Both 2 and 3
Question 5 Multiple Choice (Single Answer)

An ambidentate ligand
A. is linked to the metal atom at two points
B. has two donor atoms but only one of the has the capacity to form a coordinate bond
C. has two donor atoms but either of two can form a coordinate bond

  1. Only A
  2. Only B
  3. Only C
  4. A and C
  5. B and C
Question 6 Multiple Choice (Single Answer)

Geometrical isomerism in coordination compounds is exhibited by __________.

  1. only tetrahedral complexes
  2. square planar and tetrahedral complexes
  3. square planar and octahedral complexes
  4. tetrahedral and octahedral complexes
  5. square planar, tetrahedral and octahedral complexes
Question 7 Multiple Choice (Single Answer)

‘Class a’ acceptors are the metal ions belonging to which of the follwoing?
A. Group 1 and 2
B. Inner transition elements
C. Transition elements belonging to groups 3 to 6

  1. Only A
  2. Only B
  3. Only C
  4. A, B and C
  5. A and C
Question 8 Multiple Choice (Single Answer)

Which of the following statement is correct?
A. Coordination compounds are only formed by d- and f-block elements.
B. Ni(CO)4 is square planar with dsp2 hybridization.
C. [Cu(NH3)4]+2 is square planar in shape.

  1. Only A
  2. Only B
  3. Only C
  4. All of these
  5. None of these
Question 9 Multiple Choice (Single Answer)

If ∆0 < P, the correct electronic configuration for d4 system will be

  1. T2g4, eg0
  2. T2g3, eg1
  3. T2g2, eg2
  4. T2g0, eg4
  5. None of these
Question 10 Multiple Choice (Single Answer)

Assertion: Ethylenediaminetetraacetate ion forms an octahedral complex with the metal ion.
Reason: It has six donor atoms which coordinate simultaneously with metal ion.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false but R is true.
  5. Both A and R are false.
Question 11 Multiple Choice (Single Answer)

Which of the following is not correct?
Organometallics can play an ever expanding role in the production of
A. Pharmaceuticals
B. Agrochemicals
C. Flavours

  1. Only A
  2. Only B
  3. Only C
  4. A, B and C
  5. None of these
Question 12 Multiple Choice (Single Answer)

Which of the following statements is/are true?
A. Ni(CO)4 is square planar in shape.
B. Strong ligands like CN- forms high spin complexes.
C. Fischer salt is a complex salt.

  1. Only A
  2. Only B
  3. Only C
  4. A and C
  5. B and C
Question 13 Multiple Choice (Single Answer)

Which of the following statements is/are false?
A. [Co(EDTA)]-4 complex is octahedral in shape.
B. dsp2 and sp3 hybridization lead to the same geometry.
C. Thiocarbonyl is an anionic ligand.

  1. Only A
  2. Only B
  3. A and B
  4. Only C
  5. B and C
Question 14 Multiple Choice (Single Answer)

Which of the following statements is incorrect?
A. βn is equal to the product of K1, K2, K3 …… Kn.
B. K1, K2, K3 …… Kn are called stepwise stability or formation constants.
C. βn = K1 + K2 + K3 …… Kn.

  1. Only A
  2. Only B
  3. Only C
  4. A and B
  5. A and C
Question 15 Multiple Choice (Single Answer)

Match the list I (coordination compounds) with list II (isomers):

 
List - I 
        </strong>|<strong>List - II</strong>|

|(i) [Co(NH3)5Br]SO4 and [Co(NH3)5SO4]Br|a. Linkage isomers|
|(ii) [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6]|b. Ionisation isomers|
|(iii) [Cr(H2O)5Cl]Cl2.H2O and [Cr(H2O)4Cl2]Cl.2H2O|c. Polymerisation isomers|
|(iv) Pt(SCN)62 and Pt(NCS)62|d. Coordination isomers|
|(v) [Co(NH3)6][Co(NO2)6] and [Co(NH3)3(NO2)3]|e. Hydration isomers|

  1. i - b, ii - d, iii - e, iv - a, v - c
  2. i - a, ii - d, iii - e, iv - b, v - c
  3. i - b, ii - c, iii - e, iv - a, v - d
  4. i - a, ii - c, iii - b, iv - d, v - e
  5. i - d, ii - e, iii - c, iv - b, v - a
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