NSO Level 1- Science Olympiad (SOF) Class 8: Questions 455 - 460 of 1076

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Question number: 455

» 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.

Jute fibre is used to make

Choices

Choice (4) Response

a.

Gunny bags

b.

Fabric

c.

Decorative articles

d.

All a. , b. and c. are correct

Question number: 456

» 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.

A thermosetting plastic

Choices

Choice (4) Response

a.

Relyente

b.

Yopetlers

c.

Yoln

d.

Lemanemi

Question number: 457

» Metals and Non-Metals

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MCQ▾

Question

The non-metal essential for life is

Choices

Choice (4) Response

a.

Bromine

b.

Graphite

c.

Iodine

d.

Carbon

Question number: 458

» Metals and Non-Metals

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MCQ▾

Question

Mother gave Meena two small pouches containing iron fillings and coal and asked her to crush both to a fine powder. She could make a fine powder of coal but could not powder iron fillings. The reason behind it is

Choices

Choice (4) Response

a.

Iron is a metal and coal is a non-metal

b.

Metals are hard and non-metals are soft and brittle

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 459

» Metals and Non-Metals

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MCQ▾

Question

A purple coloured non-metal forms a brown solution in acid which is used as an antiseptic is

Choices

Choice (4) Response

a.

Chlorine

b.

Iodine

c.

Helium

d.

Bromine

Question number: 460

» Metals and Non-Metals

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MCQ▾

Question

The gaseous non-metal that is essential for life to exist on earth is

Choices

Choice (4) Response

a.

Oxygen

b.

Hydrogen

c.

Carbon

d.

Copper

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