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

Energy from Chemicals Quiz with Answers PDF Download – Test 7

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Free "Energy from Chemicals Study" App Download (iOS & Android): Burning of methane (CH₄) gives off heat and; MCQ with answers: water (gas) only, carbon dioxide (gas) only, hydrogen gas, and carbon dioxide (gas) and water (gas). Study Acidity or Alkalinity Quiz Questions, download Google Book (Free Chapter) for chemistry remote academic continuity.

Energy from Chemicals Exam Questions and Answers PDF Download: Test 7

MCQ 31: Burning of methane (CH₄) gives off heat and:

carbon dioxide (gas) only
water (gas) only
hydrogen gas
carbon dioxide (gas) and water (gas)

MCQ 32: Burning of glucose produces heat and:

carbon dioxide (gas) only
water (gas) only
oxygen (gas)
carbon dioxide (gas) and water (gas)

MCQ 33: Endothermic reactions take place when:

energy given out in making bonds is less than the energy taken in for breaking bonds
energy given out in making bonds is more than the energy taken in for breaking bonds
energy given out in making bonds is equal to the energy taken in for breaking bonds
none of above

MCQ 34: Water with lesser oxygen is known to cause:

water pollution only
disturbance in balance of life in river only
poisonous
water pollution and disturbance in balance of life in river

MCQ 35: Energy changes in a chemical reaction can be represented through:

energy profile diagram
energy prolific graph
Sensors
data loggers

Energy from Chemicals Quiz App & e-Book – IGCSE O Level Chemistry Study Material

Acids and Bases MCQs

Chemical Bonding and Structure MCQs

Electricity and Chemicals MCQs

Electricity and Chemistry MCQs

Redox Reactions MCQs

Chemical Formulae and Equations MCQs

Elements, Compounds and Mixtures MCQs

Methods of purification MCQs

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