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Indian Navy SSR (Sailor) Chemical Reactions and Equations — practice questions

Explore 1 free Chemical Reactions and Equations 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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Chemical Reactions and Equations questions and exercises with answers

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Which reaction does NOT need heat to proceed?Read the answer and worked solution →

Worked practice questions

Which reaction does NOT need heat to proceed?

  1. 2 H₂O → 2 H₂ + O₂
  2. 2 AgCl → 2 Ag + Cl₂
  3. CaO + H₂O → Ca(OH)₂
  4. CaCO₃ → CaO + CO₂
Show answer and solution

Correct answer: C. CaO + H₂O → Ca(OH)₂

Slaking of lime is a vigorous combination that releases heat rather than needing it. The other three are decompositions that require heat, electricity, or sunlight.

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More Chemistry topics

Chemical EquilibriumOrganic ChemistryThe p-Block ElementsAlcohols Phenols EthersAtoms and MoleculesClassification of Elementsp-Block ElementsPolymers