Class 7 Science MCQs - Chapter 17
Physical and Chemical Changes Trivia Questions & Answers PDF Download - 4
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The Physical and chemical changes Trivia Questions and Answers PDF (physical and chemical changes Quiz Answers PDF e-Book) download Ch. 17-4 to study Grade 7 Science Course. Practice Making Plastics MCQ PDF, Physical and Chemical Changes Quiz Questions and Answers to learn online school courses. The Physical and Chemical Changes Trivia App Download: Free certification app for making plastics, polythene, making ammonia, reversible reaction, physical changes test prep for online school and college.
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Physical and Chemical Changes Test Questions and Answers PDF Download: MCQ 4
The chemist who started plastic industry was an
- Chinese
- Indian
- American
- British
Ethene is obtained from
- light oil
- coconut oil
- olive oil
- sunflower oil
Two major requirements for preparation of ammonia are
- low temperature and high pressure
- low temperature and pressure
- high temperature and low pressure
- high temperature and pressure
The melting point of ice is
- 0 °C
- 1 °C
- 100 °C
- 50 °C
When heat is provided to particles of solids, they gain
- heat energy
- potential energy
- kinetic energy
- thermal energy
Class 7 Science Mock Tests
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