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2021 BGCSE Chemistry Paper-1 Question-46
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Q-50
Which of the following is a substitution reaction?
C₂H₂ + 2H₂ ⟶ C₂H₆
C₂H₄ + H₂O ⟶ C₂H₅OH
C₂H₆ + Cl₂ ⟶ C₂H₄Cl + HCl
C₂H₅OH + 3O₂ ⟶ 2CO₂ + 3H₂O
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