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Indian Navy SSR Chemical Reactions and Equations — practice questions

Explore 3 free Chemical Reactions and Equations questions in Indian Navy SSR Science. 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

Showing questions 1–3 of 3.

A balanced chemical equation has an equal number of atoms of each element on both sides because of the law of:Read the answer and worked solution →Decomposition brought about by passing electricity through a substance is called:Read the answer and worked solution →CaCO₃ → CaO + CO₂ is an example of which type of reaction?Read the answer and worked solution →

Worked practice questions

A balanced chemical equation has an equal number of atoms of each element on both sides because of the law of:

  1. multiple proportions
  2. constant proportions
  3. conservation of mass
  4. conservation of momentum
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Correct answer: C. conservation of mass

Balancing reflects conservation of mass: atoms of each element are equal on both sides.

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Decomposition brought about by passing electricity through a substance is called:

  1. photodisplacement
  2. electrolytic decomposition (electrolysis)
  3. thermal combination
  4. spontaneous oxidation
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Correct answer: B. electrolytic decomposition (electrolysis)

Passing electricity to decompose a compound is electrolytic decomposition (electrolysis).

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CaCO₃ → CaO + CO₂ is an example of which type of reaction?

  1. doubledisplacement
  2. decomposition
  3. combination
  4. displacement
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Correct answer: B. decomposition

A single reactant breaks into two products. This is a decomposition reaction.

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More Science topics

Science & TechnologyElectricityLight - Reflection and RefractionAcids, Bases and SaltsAcids Bases SaltsCarbon and its CompoundsMetals and Non-metalsMetals & Non-metals