Coordination Compounds MCQ for CSIR NET & GATE Assignment 10 PDF Download

Coordination Compounds are the compounds made from a coordinate bond between metal center and ligands. This chapter carry around 28 marks in CSIR NET exam for chemical science, which make it hard to ignore. In this artical we will be looking at 15 new MCQ questions on this chapter that have been asked in CSIR NET & GATE exams of recent years.

You can attempt the mcq assignment as a quiz where you can mark options and calculate your score online. Or, you can download the whole assignment as a PDF file from google drive to access it offline.

    

Questions

Question 1. The lattice energy data of FeCl₂ is given as:
Experimental lattice energy = - 320 kJ/mol
Calculated lattice energy = - 270 kJ/mol
The CFSE of the complex [FeCl₄]^2- is:
a) -125 KJ mol^-1
b) -55.55 KJ mol^-1
c) -33.33 KJ mol^-1
d) -50 KJ mol^-1

Question 2. The correct order of rate constants of following reactions is: 

a) k₃ < k₁ = k₂
b) k₃ > k₁ > k₂
c) k₃ > k₁ < k₂
d) k₃ = k₁ > k₂

Question 3. The complex that exists as a pair of enantiomers is:
a) cis-[Co(NH₃)₄Cl₂]⁺
b) [Pt(PPh₃)(Cl)(Br)(CH₃)]^-
c) trans-[Co(en)₂Cl₂]
d) [Co(en)₃]³⁺

Question 4. CoCl₄^2- is a blue colored complex. The controlled treatment of this complex with water generates two isomeric light pink complexes. The correct point groups for CoCl₄^2- and two isomeric complexes are:
a) D_4h and (C_2v and C_2h)
b) T_d and (C_2v and D_4h)
c) D_4h and (C_2v and D_4h)
d) T_d and (C_2v and C_4v)

Question 5. Which of the following is not the correct order of stability?

a) I and IV
b) II and III
c) I and III
d) II and IV

Question 6. Which of the following complexes show low-spin high-spin equilibrium?

a) II, V
b) II, III, V
c) I, II, IV
d) All

Question 7. The number of isomers at low and high temperature, respectively for [Ni(py)₂Cl₂] are:
a) 2, 1
b) 1, 2
c) 1, 1
d) 2, 2

Question 8. The number of spinels having λ value greater than zero are:
MgAl₂O₄, ZnFe₂O₄, FeCr₂O₄, Mn₃O₄, NiGa₂O₄, Fe₃O₄, CoFe₂O₄
a) 1
b) 2
c) 3
d) 4

Question 9. Consider the following reaction: 

where Mn⁺ = Ni²⁺, V²⁺, Mn²⁺, Cu²⁺, Cr³⁺
The probability of choosing a metal ion having rate constant greater than Fe²⁺ is
a) 100%
b) 80%
c) 60%
d) 40%

Question 10. Which of the following pairs will have same number of microstates?
a) ³A_2g and ²T_1g
b) ¹P and p²
c) ³A_2g and ¹P
d) p² and ²T_1g

Question 11. Which of the following is incorrect regarding the base hydrolysis of [Co(PPh₃)₃Cl₃]?
a) The reaction is first order with respect to the nucleophile (OH^-)
b) The reaction proceeds through SN¹ mechanism.
c) The reaction is independent of concentration of nucleophile (OH^-)
d) The reaction doesn’t proceed through SN’CB mechanism.

Question 12. For [CoL₆]^3- where L is uni-negative monodentate ligand, the crystal field stabilization energy (in cm^-1) is:
(Crystal field splitting energy = 15000 cm^-1 and pairing energy= 12000 cm^-1)
a) -4800
b) -12000
c) -6000
d) 0

Question 13. The correct order of ambidentate behavior is:
a) SCN^- > CO > CN^-
b) CO > CN^- > SCN^-
c) SCN^- > CN^- > CO
d) CN^- > CO > SCN^-

Question 14. The correct order of intensity of color in following complexes is:
a) Cu(H₂O)₆²⁺ > CoCl₄^2- > [Co(H₂O)₆]²⁺
b) CoCl₄^2- > [Cu(H₂O)₆]²⁺ > [Co(H₂O)₆]²⁺
c) [Co(H₂O)₆]²⁺ > [CoCl₄]^2- > [Cu(H₂O)₆]²⁺
d) [CoCl₄]^2- > [Co(H₂O)₆]²⁺ > [Cu(H₂O)₆]²⁺

Question 15. The spin only value of magnetic moment of [Fe(phen)₂(NCS)₂] at low temp is:
a) 2.7
b) 3.7
c) 4.7
d) zero

Answers

1.c 2.c 3.d 4.b 5.b 6.d 7.a 8.c 9.d 10.c 11.a 12.b 13.c 14.b 15.d

More MCQs 

Our website contains the biggest free mcq library for chemistry students who are preparing for CSIR NET or GATE exam.