IGCSE O Level Chemistry MCQs - Chapter 7

Energy from Chemicals Quiz Questions and Answers PDF - 3

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Energy from Chemicals Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: Endothermic changes are indicated through

breaking of chemical bonds
making of chemical bond
burning of carbon
none of above

MCQ 12: Thermal decomposition does not occur in

carbonates
hydroxides
Sulphates
nitrates

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

Copper oxide
Nitrogen oxide
Oxygen
all of above

MCQ 14: Upon burning, Hydrogen (H₂) forms

water vapors
hydrogen oxide
hydrogen ions
hydrocarbon

MCQ 15: Exothermic reactions do not include

upon heating, hydrogen results in water
neutralization of acids and alkalis
respiration
breaking of chemical bond

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