Class 7 Science MCQs - Chapter 20
Simple Chemical Reactions Trivia Questions & Answers PDF Download - 4
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The Simple chemical reactions Trivia Questions and Answers PDF (simple chemical reactions Quiz Answers PDF e-Book) download Ch. 20-4 to study Grade 7 Science Course. Practice Physical and Chemical Change MCQ PDF, Simple Chemical Reactions Quiz Questions and Answers to study online courses. The Simple Chemical Reactions Trivia App Download: Free certification app for physical and chemical change test prep for distance education.
The Quiz: The process of breaking down of any substance into smaller substances by heating, is called; "Simple Chemical Reactions" App APK Download with answers: Evaporation; Decomposition; Thermal decomposition; Melting; to study online courses. Practice Physical and Chemical Change MCQ Questions, download Kindle eBook (Free Sample) for online elementary school classes.
Simple Chemical Reactions Test Questions and Answers PDF Download: MCQ 4
The process of breaking down of any substance into smaller substances by heating, is called
- decomposition
- evaporation
- thermal decomposition
- melting
Zinc salt reacts with dilute shulphuric acid to form zinc salt and
- hydrogen
- oxygen
- carbon dioxide
- carbon monoxide
Natural gas is made up of compound
- carbon
- methane
- ethene
- ethane
Power machines in factories and vehicles are examples of
- combustion
- thermal decomposition
- evaporation
- combination
Natural gas is more efficient and produces less
- pollution
- heat
- reaction
- less evaporation
Class 7 Science Mock Tests
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