NSO Level 1- Science Olympiad (SOF) Class 8: Questions 527 - 531 of 1076

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Question number: 527

» Synthetic Fibres and Plastics

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MCQ▾

Question

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

A blend of wool and polyester

Choices

Choice (4) Response

a.

Wool is not stiff but the blend is strong and keeps the shape of the garment

b.

Wool is warm but the blend is comfortably warm

c.

Polyster is not airy but the blend is more airy

d.

All a. , b. and c. are correct

Question number: 528

» Metals and Non-Metals

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MCQ▾

Question

Megha got a magnesium ribbon from the science lab. She burnt it, took the ash and mixed it in water. Then she tested the solution with a litmus paper. The observation would be

Choices

Choice (4) Response

a.

Red litmus paper changed blue

b.

There was no colour change in the litmus paper

c.

Blue litmus paper changed red

d.

Question does not provide sufficient data or is vague

Question number: 529

» 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.

Rahul is going for trekking. Which type of rope will he select for trekking?

Choices

Choice (4) Response

a.

Roic

b.

Onowlel

c.

Tocnot

d.

Yoln

Question number: 530

» 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 polymer in thermocol is

Choices

Choice (4) Response

a.

Repostlyeny

b.

Relyente

c.

Lemanemi

d.

Yopetlers

Question number: 531

» Metals and Non-Metals

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MCQ▾

Question

Sita bought a copper lamp as a decorative piece and displayed it in her show case. After a month she found that it looked dull with green patches on it. She was so shocked to see this. The green material is

Choices

Choice (4) Response

a.

A mixture of copper hydroxide and copper carbonate

b.

Copper carbonate

c.

Copper hydroxide

d.

All of the above

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