Class 7 Science MCQs - Chapter 17
Physical and Chemical Changes Quiz Questions & Answers PDF Download - 23
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The Quiz: At first slightly different form of 'polythene' was discovered in; "Physical and Chemical Changes" App (iOS, Android) with answers: 1833, 1733, 1933, and 1953 to learn online schools courses. Study Polythene MCQ Questions, download Amazon eBook (Free Sample) for online study.
Physical and Chemical Changes Exam Questions and Answers PDF Download: Test 23
At first slightly different form of 'polythene' was discovered in
- 1733
- 1833
- 1933
- 1953
The world's first successful plastic was made in
- 1770
- 1870
- 1970
- 1980
Physical change only effects the
- arrangement of particles
- energy of particles
- arrangement and energy of particles
- size of particles
A component without which fertilizer is incomplete, is
- ammonia
- nitrogen
- methane
- ethene
A component which can stick to the magnet is
- iron
- sulphur
- both a and b
- lead
Class 7 Science Mock Tests
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