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Merits and Demerits of Synthetic Fibres

Fibres are ma...

Question

Fibres are made from melted plastic by passing it through fine holes in a ___________

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Solution

Fibres are made from melted plastic by passing it through fine holes in a spinneret.

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Q. Fibres are made from melted plastic by passing it through fine holes in a ___________

Fill in the following blanks with suitable words :

(a) Synthetic fibres are also called .......... or ....... fibres.

(b) Synthetic fibres are made from raw materials called .......

(c) Like synthetic fibres, plastic is also a ........

(d) The use of plastics can be reduced by using bags made of ........ or ......... instead of polythene bags.

Q. A typical optical fibre consists of a fine core of a material of refractive index

μ_{1}

surrounded by a glass or plastic cladding with refractive index

μ_{2}

Q. Fill in the blanks with appropriate words.
(a) Synthetic fibres are also called ____ or ____ fibres.
(b) Synthetic fibres are synthesised from raw material called____.
(c) Like synthetic fibres, plastics is also a ____.

Q. Big holes in Swiss cheese are made by a:

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Merits and Demerits of Synthetic Fibres

Standard VI Chemistry

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