Month: October 2021

Polymers : Synthetic Fibres and Plastics Scandisk 1. Fill in the blanks. The small repeating units in a polymer are called manomile Royan is also known as artifficial silk. lalyesta isused for making sails for sailboats. Bakelite is used for making the handles of cookingutensils. Plastics derived from natural sources …

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Pollution of Air and Water Scandisk 1. Fill in the blanks. a.  Soot is a carbon-containing air pollutant. b. Vehicular emissions contain carbon monoxide  which is an air pollutant. c. In winters, smoke and fog combine to form smog. d. Purified water which is fit for drinking is known as …

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