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Indian Navy SSR (Sailor) Coordination Compounds — practice questions

Explore 30 free Coordination Compounds questions in Indian Navy SSR (Sailor) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Coordination Compounds questions and exercises with answers

Showing questions 1–30 of 30.

Cis and trans isomers of [Co(NH3)4Cl2]⁺ are examples of:Read the answer and worked solution →For [Cu(NH3)4(H2O)2]²⁺ (octahedral with 4 NH3 equatorial + 2 H2O axial), this is:Read the answer and worked solution →Crystal field splitting for d-orbitals in octahedral field. The five d orbitals split into:Read the answer and worked solution →In Valence Bond Theory, an octahedral LOW-SPIN complex like [Co(NH3)6]³⁺ uses which hybridisation?Read the answer and worked solution →Sort each ligand by how many donor atoms it usesRead the answer and worked solution →Match each term to its definitionRead the answer and worked solution →True or false: coordination numberRead the answer and worked solution →Counting the coordination numberRead the answer and worked solution →Match each complex to its shapeRead the answer and worked solution →Sort each complex by its geometryRead the answer and worked solution →Complete the coordination sphere ruleRead the answer and worked solution →True or false: ambidentate ligandsRead the answer and worked solution →Chelate or ambidentate?Read the answer and worked solution →Complete the definition of oxidation numberRead the answer and worked solution →Match each theory to what it explainsRead the answer and worked solution →Tap every failing of Valence Bond TheoryRead the answer and worked solution →True or false: the theories and their limitsRead the answer and worked solution →Complete Werner's postulateRead the answer and worked solution →Synergic bonding in metal carbonylsRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Order the steps: read a formula like K₄[Fe(CN)₆]Read the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Tap every statement true of a chelate complexRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: where coordination chemistry mattersRead the answer and worked solution →Inside the brackets or outside?Read the answer and worked solution →Spot the odd one outRead the answer and worked solution →

Worked practice questions

Cis and trans isomers of [Co(NH3)4Cl2]⁺ are examples of:

  1. Coordination isomerism
  2. Optical isomerism
  3. Geometric (cis-trans) isomerism
  4. Linkage isomerism
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Correct answer: C. Geometric (cis-trans) isomerism

Cis (two Cl⁻ adjacent, 90 degrees) vs trans (two Cl⁻ opposite, 180 degrees). Geometric isomers have different arrangements in space but same connectivity. Common for octahedral and square planar complexes with mixed ligands.

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For [Cu(NH3)4(H2O)2]²⁺ (octahedral with 4 NH3 equatorial + 2 H2O axial), this is:

  1. Trans isomer (the two H2O are on opposite ends)
  2. Random configuration
  3. Cis isomer
  4. Three isomers possible
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Correct answer: A. Trans isomer (the two H2O are on opposite ends)

With 4 identical NH3 in equatorial plane and 2 H2O on opposite ends (axial positions), the H2O ligands are trans to each other. This is the trans isomer. (Compare with cis where two H2O would be adjacent at 90 degrees.)

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Crystal field splitting for d-orbitals in octahedral field. The five d orbitals split into:

  1. All equal
  2. 3 (lower, t₂g) + 2 (higher, e_g)
  3. 2 + 3 with e_g higher
  4. 2 sets of 2 + 1
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Correct answer: B. 3 (lower, t₂g) + 2 (higher, e_g)

Octahedral: t₂g (dxy, dyz, dxz — between axes, lower energy) and e_g (dz², dx²-y² — along axes, higher energy because they point toward ligands). Energy gap Δ_o (CFSE).

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