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प्रश्न
Differentiate between natural fibres & synthetic fibres.
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उत्तर
Natural fibres: such as cotton and wool, which were directly converted into clothing material.
Synthetic fibres: such as terylene, nylon and rayon are used in expensive clothing; carpets, etc.
संबंधित प्रश्न
Give two examples of the following substance.
Food preservatives
Name the chemicals which help in increasing food production.
Name the scientists who discovered the following:
Elements
Fill in the blank:
Inert gases were discovered by ___________
Write True or False against the following statement.
Antibiotics are used as preservatives:
State the contributions of Dimitri Mendeleev
Food processing is an important procedure for obtaining marketable food products.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
Give reasons for the following
Polyester is added to natural fiber cotton, to give terylene.
Select the correct name from the choices given below for the following case.
A synthetic fibre used in clothing.
