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Indian Navy INET Haloalkanes and Haloarenes — practice questions

Explore 3 free Haloalkanes and Haloarenes questions in Indian Navy INET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Haloalkanes and Haloarenes questions and exercises with answers

Showing questions 1–3 of 3.

Reactivity order for SN2 reactions (1°, 2°, 3°):Read the answer and worked solution →As per your syllabus, the general formula of an alkane (saturated open-chain hydrocarbon) is which?Read the answer and worked solution →As per your syllabus, Friedel-Crafts ALKYLATION of benzene uses which reagent system?Read the answer and worked solution →

Worked practice questions

Reactivity order for SN2 reactions (1°, 2°, 3°):

  1. 1° > 2° > 3°
  2. 3° > 2° > 1°
  3. 1° > 2° > 3° (steric)
  4. Same
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Correct answer: C. 1° > 2° > 3° (steric)

**SN2:** backside attack hindered by bulk. Primary fastest, tertiary essentially doesn't undergo SN2. Reverse for SN1 (3° > 2° > 1°).

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As per your syllabus, the general formula of an alkane (saturated open-chain hydrocarbon) is which?

  1. CₙHₙ
  2. CₙH₂ₙ₊₂
  3. CₙH₂ₙ₋₂
  4. CₙH₂ₙ
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Correct answer: B. CₙH₂ₙ₊₂

Your syllabus: alkanes follow CₙH₂ₙ₊₂. Alkenes are CₙH₂ₙ; alkynes CₙH₂ₙ₋₂.

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As per your syllabus, Friedel-Crafts ALKYLATION of benzene uses which reagent system?

  1. R-Cl with anhydrous AlCl₃
  2. R-Cl with Na in dry ether
  3. ROH with conc. H₂SO₄
  4. R-COOH with NaOH/CaO
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Correct answer: A. R-Cl with anhydrous AlCl₃

Your syllabus: alkyl halide + anhydrous AlCl₃ generates R⁺, which attacks benzene to form alkylbenzene.

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More Chemistry topics

JEE Main 2023 MixedAtomic combinationsStructure of AtomAtoms and ElementsChemical EquilibriumClass9 Atom StructureChemistryAlkenes