Coordination Compounds Practice Questions
JEE · Chemistry · 1338 free MCQs with instant results and detailed explanations.
1338
Total
300
Easy
605
Medium
433
Hard
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Topics in Coordination Compounds
Werner's Theory
207
IUPAC Nomenclature
184
Isomerism
202
Bonding in Coordination Compounds
184
CFT
180
VBT
204
Applications
177
Sample Questions from Coordination Compounds
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
According to Werner's theory, the coordination number of a metal ion is defined as the number of:
A.
ligands attached to the metal ion
B.
ions in the crystal lattice
C.
electrons donated by ligands
D.
oxidation states of metal
Show Answer & Explanation
Correct Answer: A
The coordination number refers to the total number of ligands directly bonded to the central metal atom in a coordination complex.
Q2
Easy
Which of the following ligands can be classified as a bidentate ligand according to Werner's theory?
A.
NH3
B.
EDTA
C.
Cl-
D.
H2O
Show Answer & Explanation
Correct Answer: B
EDTA is a hexadentate ligand, but it can also act as a bidentate ligand because it has multiple donor sites that can bond to a metal.
Q3
Easy
In Werner's theory, which of the following statements is true regarding the nature of complexes?
A.
All complexes are neutral.
B.
Complexes can be positively or negatively charged.
C.
Metal ions cannot be complexed.
D.
Only monodentate ligands form complexes.
Show Answer & Explanation
Correct Answer: B
Werner's theory allows for the formation of positively charged, negatively charged, and neutral complexes depending on the ligands and metal ions involved.
Q4
Medium
Which of the following statements best describes Werner's theory of coordination compounds?
A.
It emphasizes the role of ligands in determining the structure.
B.
It focuses on the number of d-electrons in transition metals.
C.
It states that all coordination compounds are ionic.
D.
It does not consider the geometry of the complexes.
Show Answer & Explanation
Correct Answer: A
Werner's theory highlights the importance of ligands in defining the geometry and properties of the coordination complexes.
Q5
Medium
In Werner's theory, which term refers to the number of ligands bonded to the central metal ion?
A.
Coordination number
B.
Oxidation state
C.
Ligand field
D.
Chelation
Show Answer & Explanation
Correct Answer: A
The coordination number is defined as the number of ligands that surround the central metal ion in a coordination complex.
Q6
Medium
Which of the following is NOT a type of ligand according to Werner's theory?
A.
Monodentate
B.
Bidentate
C.
Tridentate
D.
Quadrantate
Show Answer & Explanation
Correct Answer: D
The term 'quadrantate' is not a recognized classification of ligands. Ligands are classified as mono-, bi-, and tridentate based on the number of donor atoms they have.
Q7
Medium
According to Werner's theory, the oxidation state of a metal ion in a coordination compound is determined by which of the following?
A.
The total charge of the complex
B.
The number of ligands present
C.
The geometry of the complex
D.
The type of metal used
Show Answer & Explanation
Correct Answer: A
The oxidation state of the metal ion is calculated based on the overall charge of the coordination compound and the charges of the ligands present.
Q8
Hard
Which of the following statements best describes the primary and secondary valencies in Werner's theory of coordination compounds?
A.
Primary valency is ionizable and indicates the oxidation state, while secondary valency is non-ionizable and represents the coordination number.
B.
Both primary and secondary valencies are ionizable, but primary refers to the ligand count.
C.
Primary valency indicates the ligands, while secondary valency contributes to the oxidation state.
D.
Primary valency is fixed, while secondary valency varies with the ligand type.
Show Answer & Explanation
Correct Answer: A
Primary valency denotes the oxidation state and is ionizable, while secondary valency represents the fixed coordination number and is non-ionizable.
Q9
Hard
For a coordination compound with the formula [Co(NH3)6]Cl3, what is the primary valency of cobalt in this complex?
A.
3
B.
2
C.
6
D.
0
Show Answer & Explanation
Correct Answer: A
In [Co(NH3)6]Cl3, cobalt has a +3 oxidation state, thus the primary valency is 3.
Q10
Hard
Which complex demonstrates the geometrical isomerism predicted by Werner’s theory?
A.
[Pt(NH3)2Cl2]
B.
[Ni(CN)4]2−
C.
[Fe(H2O)6]3+
D.
[Co(NH3)3Cl3]
Show Answer & Explanation
Correct Answer: A
The complex [Pt(NH3)2Cl2] can exist in cis and trans forms, showcasing geometrical isomerism.
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Coordination Compounds — JEE Chemistry Practice Questions Online
This page contains 1338 practice MCQs for the chapter Coordination Compounds in JEE Chemistry. The questions are organized by difficulty — 300 easy, 605 medium, 433 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 7 topics, giving you comprehensive coverage of the entire chapter.