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Natural fibres

Give 5 examples of natural and artificial fibres.

Science
Science
- What measures can be taken to prevent noise pollution ?
Science

Advantages and disadvantages of science

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Force

Define one newton force

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Friction

What are the methods of reducing friction ? Explain

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Dry ice

What is the chemical name of dry ice? Why is it called dry ice?

Science
Soda-acid fire extinguishers

Explain the working of soda acid type fire extinguisher

Science
Wool

What are the health hazards of wool industry workers ?

Science
Soda-acid fire extinguishers

What is a soda acid fire extinguisher ?

Science
Wild life

What is meant by wildlife? How is wildlife important for us ?

Science
Reflex action and reflex arc

why we yawn when we are sleepy or drowsy

Science

What is tincture of iodine? Identify the solute and solvent in it.

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