Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ]

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Question 32 (Assertion, Reasoning) - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10

Last updated at April 16, 2024 by

Assertion: Decomposition of vegetable matter into compost is an endothermic reaction. 

Reason: Decomposition reaction involves breakdown of a single reactant into simpler products. 

 

Answer - 

We know that

  • Exothermic reaction releases energy after the reaction
  • Endothermic reaction aborbs energy to undergo the reaction

 

Now,

  • In Decomposition of vegetable matter, energy is released . So, it is an Exothermic reaction.
  • Also, in Decomposition reaction, single reactant breaks down into simpler products.

Decomposition Reaction-01.jpg

Thus,

  • Assertion is false
  • Reasoning is true

 

So, the correct answer is (d)  

 

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo