Question 8 - Assertion Reasoning Questions (MCQ) - Chapter 3 Class 10 - Metals and Non-Metals

Last updated at August 12, 2026 by

Assertion (A): In the alumino thermite process, the metals like iron melt due to the heat evolved in the reaction.  

Reason (R): The reaction is:  Fe 2 O 3 + 2Al → Al 2 O 3 + 2Fe  

Answer 

  • The thermite process is an exothermic reaction. 
  • A large amount of heat is evolved in the process (>3000℃) which melts iron.
  • This heat is also used for welding. 

thermite reaction is exothermic in nature - Teachoo.png

Thus, 

  • The Assertion is True.
  • Reason is also True.

And the Reason is NOT the correct explanation for the assertion.  



So, the correct answer is (b)

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