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Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations1 Mark
Question
For two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:
  1. Both A and R are true, and R is correct explanation of the assertion.
  2. Both A and R are true, but R is not the correct explanation of the assertion.
  3. A is true, but R is false.
  4. A is false, but R is true.
Assertion: ln a balanced chemical equation, total mass of the reactants is equal to the total mass of the products.
Reason: Mass can neither be created nor destroyed during a chemical change.
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Answer

  1. Both A and R are true, and R is correct explanation of the assertion.

Explanation:

This is according to the law of conservation of mass.

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