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IGCSE O Level Chemistry MCQs – Practice Test 7 (Chapter 13)

Speed of Reaction Quiz with Answers PDF Download – Test 7

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Speed of Reaction Exam Questions and Answers PDF Download: Test 7

MCQ 31: Uses of enzymes do not include:

  1. production of insulin
  2. production of cancer drugs
  3. drug to combat plague
  4. drug to fight dwarfism

MCQ 32: Biological catalyst to convert Hydrogen Peroxide (H2O2) into water (H2O) and oxygen (O2) is:

  1. amylase
  2. hydrolase
  3. catalase
  4. protease

MCQ 33: Rate of decomposition of hydrogen peroxide can be expedited through:

  1. glycerin
  2. manganese oxide
  3. vanadium oxide
  4. platinum

MCQ 34: What is true about Enzymes?

  1. they act as biological catalysts
  2. they operate over a wide range of pH
  3. they are highly specific
  4. they operate over wide temperatures only

MCQ 35: In a certain volume, higher temperature:

  1. increases concentration of gases
  2. decreases concentration of gases
  3. liquefies the gases
  4. the reaction may not occur at all

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