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SCICTIONAL (A DICTIONARY OF SCIENCE WORDS USED IN YOUR7. Which of these can you use as a substitute for glass in windows?a. polytheneb. PVCс. perspexd. teflon8. Which of these is not a property of plastics?a. bad conductor of heatb. bad conductor of electricityc. inflammabled. soluble in waterVERY SHORT-ANSWER QUESTIONS: Give one-word answers.4. What name is given to natural materials that are used to manufacture human-madmaterials?2. What is the most common source for synthetic fibres?payoreen​

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7 ANS (a)8 ans (d)EXPLANATION:PLEASE mark as brilliance



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