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Assertion (A): During a chemical reaction, atoms of reactants change into those of other elements to form new substances called products. Reason (R): Chemical reactions are the processes in which new

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Question

Assertion (A): During a chemical reaction, atoms of reactants change into those of other elements to form new substances called products.

Reason (R): Chemical reactions are the processes in which new substances with new properties are formed.

Options

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

  • Both A and R are true but R is not the correct explanation of the assertion.

  • A is true but R is false.

  • A is false but R is true.

MCQ
Assertion and Reasoning
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Solution

A is false but R is true.

Explanation:

Assertion (A) is false because atoms of one element never change into atoms of another element during a chemical reaction; they only rearrange their chemical bonds. Reason (R) is true because chemical reactions fundamentally rearrange these existing atoms to create entirely new substances that exhibit completely different properties.
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Chapter 1: Chemical Reactions and Equations - Exercise 3 [Page 67]

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Lakhmir Singh Chemistry [English] Class 10
Chapter 1 Chemical Reactions and Equations
Exercise 3 | Q 5. | Page 67
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