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

Class 10
Solutions to CBSE Sample Paper - Science Class 10

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



  • 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


  • 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