Olympiad Test: Synthetic Fibres And Plastics - 2


15 Questions MCQ Test Science Olympiad Class 8 | Olympiad Test: Synthetic Fibres And Plastics - 2


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Attempt Olympiad Test: Synthetic Fibres And Plastics - 2 | 15 questions in 30 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Science Olympiad Class 8 for Class 8 Exam | Download free PDF with solutions
QUESTION: 1

Which of them is a polymer?

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QUESTION: 2

A substance becomes soft on heating and can be mould into different shapes. It is called

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QUESTION: 3

Monomers are the basic unit of

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QUESTION: 4

Which one of the following is a fireproof plastic?

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QUESTION: 5

Which one of the following can’t catch fire?

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Correct Answer :- b

Explanation : Melamine is a versatile material. It resist fire and can tolerate heat better than other plastics. It is used for making floor tiles, kitchenware and fabrics which resist  fire.

QUESTION: 6

Which of these can be used as a substitute for glass of windows in cars?

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QUESTION: 7

On the basis of activity, the strongest fibre is

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QUESTION: 8

Which of the following is a monomer of polythene?

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QUESTION: 9

Which fibre is called as artificial silk?

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QUESTION: 10

PVC stands for

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QUESTION: 11

A paper strip is immersed in NaOH and then in carbon disulphide (Cs2). The liquid obtained is

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QUESTION: 12

NaOH and —— are solutions used in the preparation of rayon.

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QUESTION: 13

Which fibre is used in making of conveyor belts?

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QUESTION: 14

Which type of plastic cannot be reheated again to form new shapes?

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QUESTION: 15

Which substance is used in coating for making non-sticky utensils?

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