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Chemistry Medium CSS Uploaded: 04 Sep 2026

Which term describes a reaction that proceeds to completion in one direction?

  • A Reversible reaction
  • B Irreversible reaction
  • C Chain reaction
  • D Equilibrium reaction
Correct Answer: Option B — Irreversible reaction
Explanation:
An irreversible reaction proceeds essentially to completion in the forward direction only, with reactants being fully converted into products, unlike reversible reactions which can proceed in both directions.
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