Werners Theory MCQs : This section focuses on the "Werners Theory". These Multiple Choice Questions (MCQs) should be practiced to improve the Werners Theory skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
[Fe(CN)6]4- is an example of a _______
A. Coordination compound
B. Complex ion
C. Double salt
D. Complex salt
Question 2
Given that 1 mol of NiCl2.6H2O with excess AgNO3 precipitates 2 mols of AgCl, what is the secondary valence of Ni?
A. 1
B. 2
C. 4
D. 6
Question 3
If Pt in PtCl4.2HCl has a secondary valence of 6, how many mols of AgCl will 1 mol of the compound precipitate with excess AgNO3?
A. 0
B. 1
C. 2
D. 4
Question 4
If the secondary valence in CoCl3.4NH3 is six, the solution conductivity in silver nitrate corresponds to ________ electrolyte.
A. 1:1
B. 1:2
C. 1:3
D. 1:4
Question 5
The compound tetraamminecopper(II) sulphate, or [Cu(NH3)4]SO4.5H2O, a double salt.
A. True
B. False
Question 6
Werner proposed that the primary valences are ionizable and are satisfied only by positive ions.
A. True
B. False
Question 7
What is the colour of the compound CoCl3.5NH3?
A. Yellow
B. Purple
C. Green
D. Violet
Question 8
What is the primary valence of iron in the coordination entity of compound Fe4[Fe(CN)6]3?
A. 0
B. 2
C. 3
D. 4
Question 9
What is the sum of the oxidation number of cobalt in [Co(H2O)(CN)(en)2]2+and [CoBr2(en)2]+?
A. 3
B. 4
C. 5
D. 6
Question 10
What was the term proposed by Werner for the number of groups bound directly to the metal ion in a coordination complex?
A. Primary valence
B. Secondary valence
C. Oxidation number
D. Polyhedra
Question 11
Which is the counter ion in [Pd(NH3)4]2+2Cl–?
A. Pd2+
B. [Pd(NH3)4]2+
C. Cl–
D. It does not have a counter ion
Question 12
Which of the following is a complex salt?
A. Potassium aluminium sulphate
B. Ammonium iron(ll) sulphate
C. Carnallite
D. Potassium ferrocyanide