O Level Chemistry MCQs (O Level) From Textbook

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O Level Chemistry MCQs – Certification Test 181

Fast and Slow Reactions Trivia (Question 181) – App & e-Book Download

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MCQ: 181

Milk turns sour due to

  1. conversion of lactose in lactic acid
  2. conversion of lactic acid into lactase
  3. conversion of lactic acid into lactose
  4. none of above

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