Coordination Chemistry Additional Practice Test

12th Standard Chemistry — Coordination Chemistry: Additional Online Practice Test

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Which of the following observations correctly distinguishes a double salt from a coordination compound in aqueous solution?

A.A double salt dissociates into its constituent simple ions and loses its identity. B.A coordination compound dissociates completely into simple cations and anions. C.A double salt retains the identity of the complex ion in solution. D.Both types of compounds behave identically when dissolved in water.

According to Werner's theory, which type of valence is non-ionisable and corresponds to the coordination number of the metal?

A.Primary valence B.Secondary valence C.Tertiary valence D.Ionic valence

In the coordination entity \([Fe(CN)_6]^{4-}\), the central metal ion \(Fe^{2+}\) acts as a:

A.Lewis base B.Bronsted acid C.Lewis acid D.Reducing agent

What is the coordination number of \(Ni^{2+}\) in the complex \([Ni(en)_3]Cl_2\), where 'en' stands for ethane-1,2-diamine?

A.3 B.2 C.4 D.6

Based on IUPAC guidelines, what is the correct name for the complex \([Ag(NH_3)_2]Cl\)?

A.Diamminesilver(I) chloride B.Silver diamine chloride C.Diamminesergentate(I) chloride D.Diamine silver(II) chloride

Which suffix is used for the central metal atom in a coordination compound where the complex ion carries a net negative charge?

A.-ite B.-ide C.-ate D.-ium

Linkage isomerism arises in coordination compounds containing which type of ligand?

A.Unidentate ligands B.Ambidentate ligands C.Chelating ligands D.Bridging ligands

The compounds \([Pt(en)_2Cl_2]Br_2\) and \([Pt(en)_2Br_2]Cl_2\) are examples of:

A.Coordination isomers B.Hydration isomers C.Ionisation isomers D.Linkage isomers

In Valence Bond Theory (VBT), a complex with \(sp^3\) hybridisation will have which geometry?

A.Square planar B.Octahedral C.Tetrahedral D.Linear

Q10

Which of the following ligands is considered a 'strong field ligand' capable of causing pairing of electrons in the central metal atom?

A.\(Cl^-\) B.\(F^-\) C.\(CO\) D.\(Br^-\)

Q11

In an octahedral crystal field, the five degenerate d-orbitals split into which two sets of orbitals?

A.\(t_2\) and \(e\) B.\(t_{2g}\) and \(e_g\) C.\(s\) and \(p\) D.\(d_{xy}\) and \(d_{z^2}\)

Q12

Why are complexes of \(Zn^{2+}\) (with \(d^{10}\) configuration) generally colourless?

A.They absorb all wavelengths of visible light. B.The d-d transition is not possible because the d-orbitals are completely filled. C.They do not have a coordination sphere. D.The crystal field splitting energy is too high.

Q13

In metal carbonyls, the synergic effect that accounts for the strong M-CO bond is due to:

A.Only sigma bond formation B.Only pi-back bonding C.Both sigma donation from ligand and pi-back bonding from metal D.Electrostatic attraction between ions

Q14

Which of the following terms refers to the free energy change (\(\Delta G\)) of a complex formation reaction?

A.Kinetic stability B.Thermodynamic stability C.Labile nature D.Inert nature

Q15

Which essential vitamin is a coordination compound of cobalt?

A.Vitamin A B.Vitamin B12 C.Vitamin C D.Vitamin D

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About this Coordination Chemistry test

This free online practice test covers Coordination Chemistry from the 12th Standard Chemistry (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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