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Coordination Compounds

Description: This test checks the basic knowledge of the student about the coordination compounds.
Number of Questions: 25
Created by:
Tags: CHEMISTRY CBSE (UGC) NET
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What is the oxidation number of Cr in CrO4–2 ion?

    • 1
    • 2
    • 4
    • 6
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Correct Option: D

Hemoglobin is a complex compound. Which of the following metal cations is present in this compound?

  1. Fe (II)

  2. Mg (II)

  3. Cu (II)

  4. Cr (II)

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Correct Option: A

Which of the following compounds represents hypochlorous acid?

  1. HClO2

  2. HClO

  3. HClO3

  4. HClO4

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Correct Option: B

Which of the following conditions is not correct for the formation of a stable complex?

  1. The central metal cation should have small size.

  2. The central metal cation should have high nuclear charge.

  3. Combining ligands should have high value of the ionization enthalpy.

  4. Central metal atom or ion must have sufficient number of unfilled d-orbitals.

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Correct Option: C

Which of the following monodentate ligands contains the maximum number of lone pair of electrons?

  1. H -

  2. H2O

  3. NH3

  4. Cl -

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Correct Option: D

Which of the following statements is not correct about the stability of the complex compounds?

  1. The complexes formed by chelating ligands are more stable than their monodentate analogs.

  2. Chelates with five membered rings are very stable if these contain double bonds.

  3. Greater the number of rings within the chelate, greater will be the stability of the chelate.

  4. Whenever a metal chelate is formed there is decrease in the ionic mobility of the metal.

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Correct Option: B

Which of the following complexes has tetrahedral geometry?

  1. [Cu (CN)4]2-

  2. [Pt (NH3)4]2+

  3. [Ni (CN)4]2-

  4. [PdCl4]2-

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Correct Option: B

Which of the following types of isomerism is shown by the compounds which have same composition but liberate different ions in the solution?

  1. Hydration isomerism

  2. Ionisation isomerism

  3. Linkage isomerism

  4. Coordination isomerism

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Correct Option: B

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

  1. Na2SO4

  2. KCl

  3. CaSO4

  4. KNaCO3

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Correct Option: D

What is the oxidation number of the platinum in [Pt (en) (H2O)2 (NO2) (Cl)]2+ ion?

    • 1

  2. � 2

    • 4

  4. � 1

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Correct Option: C

Geometrical isomerism is not shown by the compounds having coordination number

  1. 2, 3 and 4 (Tetrahedral only).

  2. 2, 4 (Tetrahedral only) and 6.

  3. 2, 3 and 4 (Square planar only).

  4. 2, 4 (Tetrahedral and square planar).

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Correct Option: A

What is the donor atom in the coordination compound [Co(NH3)6]Cl3?

  1. Hydrogen

  2. Nitrogen

  3. Chlorine

  4. Cobalt

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Correct Option: B

Which of the following coordination compounds does not show optical activity?

  1. [Co (NH3)3 Cl3]

  2. [Co (en)2 Cl2]+

  3. [Co (NH3)6] Cl3

  4. [Co (edta)]

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Correct Option: C

Which of the following statements is not true about a coordination compound?

  1. It consists of a central metal atom or ion surrounded by a group of atoms, ions or molecules.

  2. It is formed by the combination of the simple compounds which are otherwise capable of independent existence.

  3. It yields the original constituent components when dissolved in water.

  4. It has physical and chemical properties, different from the constituent compounds.

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Correct Option: C

What is the coordination number of silver in [Ag(NH3)2]+?

  1. 0

  2. 1

  3. 2

  4. 3

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Correct Option: C

Why do square planar complexes not show optical activity?

  1. Because each square planar complex contains an axis of symmetry

  2. Because each square planar complex contains a plane of symmetry

  3. Because each square planar complex contains a point of identity

  4. Because each square planar complex contains a principle axis

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Correct Option: B

What is the coordination number of [Cr(C2O4)3]3-?

  1. 1

  2. 2

  3. 4

  4. 6

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Correct Option: D

Which of the following statements is true about the geometrical isomerism?

  1. Geometrical isomers have same physical and chemical properties.

  2. In cis-isomers, the two identical ligands occupy the positions diagonal to each other.

  3. In trans-isomers, the two identical ligands occupy the positions adjacent to each other.

  4. Geometrical isomerism is a type of stereo isomerism.

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Correct Option: D

How many isomers are possible for [Co (edta)]?

  1. 0

  2. 1

  3. 2

  4. 3

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Correct Option: C

Which of the following types of isomerism is shown by the compounds which contain both cationic and anionic species and it results from the random distribution of the ligands?

  1. Coordination isomerism.

  2. Electronic isomerism.

  3. Hydration isomerism.

  4. Ionisation isomerism.

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Correct Option: A

How many types of stereoisomerism is/are known?

  1. 1

  2. 2

  3. 3

  4. 4

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Correct Option: B

According to conductance measurement, how many ions are present in a dilute solution of CoCl3.6NH3?

  1. 2

  2. 4

  3. 6

  4. 9

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Correct Option: B

Which of the following geometries is possessed by complex Fe(CO)5?

  1. Square planar

  2. Tetrahedral

  3. Trigonal planar

  4. Trigonal bipyramidal

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Correct Option: D

According to conductance measurement, how many ions are present in a dilute solution of CoCl3.4NH3?

  1. 2

  2. 3

  3. 5

  4. 6

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Correct Option: A

Which of the following complexes are examples of linkage isomerism?

  1. [Co(NH3)5ONO]2+ and [Co(NH3)5NO2]2+

  2. [Co(NH3)4Cl2] NO2 and [Co(NH3)4 (Cl) NO2] Cl

  3. [Co(py)2 (H2O)2Cl2]Cl and [Co(py)2 (H2O)Cl3] H2O

  4. [Co(NH3)4 Cl2]NO2 and [Co(NH3)4(Cl)NO2]Cl

Show answer
Correct Option: A
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