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Question 27 - CBSE Class 10 Sample Paper Science Solution - For 2023 Boards - Solutions to CBSE Sample Paper - Science Class 10

Last updated at August 12, 2026 by

Identify the types of reaction mentioned above in (i) and (ii). Give one example for each type in the form of a balanced chemical equation.

Question 27 - Identify the types of reaction mentioned - teachoo.jpg

Answer:

  1. The given reaction is a displacement reaction . 
  • Element A displaces element B from compound BC to form compound AC .

For Example -

displacement-reaction.jpg

2. ven reaction is a Double Displacement Reaction .

  • The negative and positive ions in compounds AB and CD displace each other to form 2 new products AC and BD.

Examples of Double Displacement reactions can be given by - 

  • Na 2 SO 4 (aq) + BaCl 2 (aq) → BaSO 4 (s) + 2NaCl(aq) 
  • 2KI + Pb(NO 3 ) 2 - > 2KNO 3 + PbI 2
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