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Write any two uses of terylene....

Write any two uses of terylene.

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The two uses of Terylene are :
(a) Terylene is used for shaping the sails of boats These sails are light strong and do not get streched and rot in the contact of water .
(b ) Aprons and other protecting clothings of terylene are used in industries and laboratories .
These are resistant to action of chemical stc .
The four physical methods for the preservation food ,aterials are :
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  19. Write any two uses of terylene.

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  20. Explain physical methods for preservation of food.

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