Class 7 Science MCQs - Chapter 17
Physical and Chemical Changes Trivia Questions & Answers PDF Download - 12
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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. 17-12 to study Grade 7 Science Course. Practice Making Plastics MCQ PDF, Physical and Chemical Changes Quiz Questions and Answers for homeschool certification courses. The Physical and Chemical Changes Trivia App Download: Free certification app for making plastics, solids liquids and gases, burning fuels, iron and sulphur, making ammonia test prep for online certifications.
The Quiz: The plastic industry began in; "Physical and Chemical Changes" App APK Download with answers: 1808; 1707; 1909; 2002; for homeschool certification courses. Practice Making Plastics MCQ Questions, download Kindle eBook (Free Sample) for virtual elementary school.
Physical and Chemical Changes Test Questions and Answers PDF Download: MCQ 12
The plastic industry began in
- 1707
- 1808
- 1909
- 2002
Two indefinite characteristics of gases are
- volume and surface area
- volume and mass
- surface area and mass
- volume and shape
For combustion, the required gas is
- carbon dioxide
- nitrogen
- hydrogen
- oxygen
Mixing of iron and sulphur together brings
- chemical change
- physical change
- biological change
- organic change
Ammonia is made by mixing two gases. These gases are
- nitrogen and hydrogen
- nitrogen and oxygen
- nitrogen and methane
- methane and oxygen
Class 7 Science Mock Tests
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