NSO Level 1- Science Olympiad (SOF) Class 8: Questions 516 - 520 of 1076

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Question number: 516

» Synthetic Fibres and Plastics

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MCQ▾

Question

Identify the polymers from its use

It is used to make various things like mug, drums, syringe, gloves, bags etc

Choices

Choice (4) Response

a.

PVC

b.

Nylon

c.

Polythene

d.

Teflon

Question number: 517

» Synthetic Fibres and Plastics

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MCQ▾

Question

The property of Teflon which makes it suitable for using for non stick coating is

Choices

Choice (4) Response

a.

It cannot be recycled

b.

It cannot withstand high temperature

c.

Oil and water do not stick on it

d.

All of the above

Question number: 518

» Synthetic Fibres and Plastics

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Question

Some of the most common blended fabrics are given in the questions. Find out the benefit of the blend over individual fabric.

Categorise the plastic materials in to thermo plastic and thermosetting plastic

  1. Telephone instrument, 2. Plastic toys, 3. Cooker handles, 4. Carry bags, 5. Plastic chairs, 6. Electric switch boards

Choices

Choice (4) Response

a.

1,2, 3 –thermosetting plastic and 4,5, 6 -thermo plastic

b.

1,3, 6 – thermoplastic and 2,4, 5 -thermosetting plastic

c.

1,3, 6 – thermosetting plastic and 2,4, 5 - thermoplastic

d.

1,2, 3—thermoplastic and 4,5, 6 -thermosetting plastic

Question number: 519

» Synthetic Fibres and Plastics

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MCQ▾

Question

Options are given in the jumbled form. Reshuffle the spellings and identify the correct options.

The material used for making handles of cookware

Choices

Choice (4) Response

a.

Ketibela

b.

Yoln

c.

Relyente

d.

Yaron

Question number: 520

» Synthetic Fibres and Plastics

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Question

We are familiar with the four R’s used in environment protection. Identify the R used in the situations

A list of waste materials is given here. Arrange them in the given boxes.

  1. Plastic toys

  2. E waste

  3. Old clothes

  4. Vegetable and fruit scraps

  5. Wooden furniture

  6. Old electric gadgets

  7. Thermocol plates and cups

  8. Broken plastic items

Reuse Recycle Recover

Choices

Choice (4) Response

a.

1,3, 6 – reuse, 2,4, 7 - recycle, 5,8 – recover

b.

3,6, 5 – reuse, 1,8 - recycle, 2,7, 4 – recover

c.

1,2, 3 – reuse, 4,5, 6 – recycle, 7,8 – recover

d.

6,8 – reuse, 3,5, 7 – recycle, 1,2, 3 - recover

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