IGCSE O Level Chemistry Quiz App | Energy from Chemicals Quiz e-Book PDF | 3
IGCSE O Level Chemistry MCQs (O Level) From Textbook

IGCSE O Level Chemistry Certification MCQs – Practice Test 3 (Chapter 7)

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Energy from Chemicals Exam Questions and Answers PDF Download: Test 3

MCQ 11: Endothermic changes are indicated through:

  1. breaking of chemical bonds
  2. making of chemical bond
  3. burning of carbon
  4. none of above

MCQ 12: Thermal decomposition does not occur in:

  1. carbonates
  2. hydroxides
  3. Sulphates
  4. nitrates

MCQ 13: Under thermal decomposition, copper nitrate gets converted into:

  1. Copper oxide
  2. Nitrogen oxide
  3. Oxygen
  4. all of above

MCQ 14: Upon burning, Hydrogen (H2) forms:

  1. water vapors
  2. hydrogen oxide
  3. hydrogen ions
  4. hydrocarbon

MCQ 15: Exothermic reactions do not include:

  1. upon heating, hydrogen results in water
  2. neutralization of acids and alkalis
  3. respiration
  4. breaking of chemical bond

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