Class 7 Science MCQs - Chapter 17
Physical and Chemical Changes Multiple Choice Questions (MCQs) PDF Download - 5
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The Physical and chemical changes Multiple Choice Questions (MCQs) with Answers PDF (physical and chemical changes MCQs PDF e-Book) download Ch. 17-5 to study Grade 7 Science Course. Learn Physical and Chemical Changes Quiz Questions and Answers to study online courses. The Physical and Chemical Changes MCQs App Download: Free learning app for polythene, polyvinyl chloride, iron and sulphur, making plastics, solids liquids and gases test prep for taking online classes.
The MCQ: '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; Three carbon and six hydrogen atoms; to study online courses. Solve Polythene MCQ Questions, download Google eBook (Free Sample) for online school and college.
Physical and Chemical Changes MCQs with Answers PDF Download: Quiz 5
'Ethene' is composed of
- two carbon and three hydrogen atoms
- one carbon and one hydrogen atom
- two carbon and four hydrogen atoms
- three carbon and six hydrogen atoms
To make flexible items a substance is added to PVC. This substance is known as
- ester
- ketone
- halo alkane
- plasticizer
The symbol of 'sulphur' is
- Fe
- Su
- S
- Ti
Natural substances made up of long molecules are
- plastic and rubber
- rubber and wool
- wool and plastic
- wood and plastic
The density of gases is
- lower than liquids but higher than solids
- lower than solids but higher than liquids
- higher than solids and liquids
- lower than solids and liquids
Class 7 Science Mock Tests
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