Class 7 Science e-Book's MCQs - Complete
Polyvinyl Chloride MCQ App Download (Free) & e-Book - 283
Apps:
MCQ:
To make flexible items a substance is added to PVC. This substance is known as
- ester
- ketone
- halo alkane
- plasticizer
d
Class 7 Science App & e-Book Tests PDF Download
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7th Grade Science MCQs eBook Download
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