Chapter 18: Class 7 Science Exam Tests
Class 7 Science MCQs - Chapter 18
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The Multiple Choice Question (MCQ Quiz): 'Ethene' is composed of; "Physical and Chemical Changes" App Download (Free) with answers one carbon and one hydrogen atom, two carbon and three hydrogen atoms, two carbon and four hydrogen atoms and three carbon and six hydrogen atoms to study online courses. Solve polythene quiz questions, download Google eBook (Free Sample) for online school and college.
MCQ 21: 'Ethene' is composed of
MCQ 22: To make flexible items a substance is added to PVC. This substance is known as
MCQ 23: The symbol of 'sulphur' is
MCQ 24: Natural substances made up of long molecules are
MCQ 25: The density of gases is
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