Class 7 Online Courses

Chapter 21: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 21

Simple Chemical Reactions Multiple Choice Questions (MCQ) PDF - 4

The e-Book Simple chemical reactions Trivia Questions and Answers, simple chemical reactions quiz answers PDF, test 4 to download class 7 science certificate courses. Solve 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 Trivia Quiz: Process of breaking down of any substance into smaller substances by heating, is called; "Simple Chemical Reactions" App APK Download (Free) with answers evaporation, decomposition, thermal decomposition and melting to study online courses. Practice physical and chemical change quiz questions, download Kindle eBook (Free Sample) for online elementary school classes.

Simple Chemical Reactions Questions & Answers PDF Download: MCQ Quiz 4

MCQ 16: The process of breaking down of any substance into smaller substances by heating, is called

A) decomposition
B) evaporation
C) thermal decomposition
D) melting

MCQ 17: Zinc salt reacts with dilute shulphuric acid to form zinc salt and

A) hydrogen
B) oxygen
C) carbon dioxide
D) carbon monoxide

MCQ 18: Natural gas is made up of compound

A) carbon
B) methane
C) ethene
D) ethane

MCQ 19: Power machines in factories and vehicles are examples of

A) combustion
B) thermal decomposition
C) evaporation
D) combination

MCQ 20: Natural gas is more efficient and produces less

A) pollution
B) heat
C) reaction
D) less evaporation

Simple Chemical Reactions Learning App & Free Study Apps

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Simple Chemical Reactions App (Android & iOS)

Simple Chemical Reactions App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (Android & iOS)

Earth Science App (Android & iOS)

Earth Science App (Android & iOS)

8th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)