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

Energy from Chemicals Quiz with Answers PDF Download – Test 7

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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 Study Material – IGCSE O Level Chemistry App & eBook Quizzes

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