Here's the question bank on all the environmental studies topics.
Rani finds a piece of cloth that is :1. Very strong and bright coloured2. Does not have many pores3. Produces smell on burning4. Is available everywhere and has multiple uses5. Cannot be worn during high temperatureIdentify the fabric.
The correct answer is PolyesterConcept: Cloth is a piece of fabric made with wool, cotton, or similar fibres.Polyester is a kind of synthetic fiber that is mainly derived from polyethylene.It is used in clothing manufacturing.Explanation:Polyester:It is much stronger and more durable than any other type of fabric material. Its colour-absorbing capacity is high, and the colour does not fade away easily.Because the material used to make this type of fabric has few pores, air does not easily pass through it, making it a barely breathable fabric.Because polyester's made from polyethene, it burns quickly and produces a chemical-type smell.This fabric does not absorb sweat from our bodies and can sometimes cause high allergic reactions, so we cannot wear it in all weather conditions.Above mentioned point, describe that Rani found a polyester cloth.So the answer is polyester. Additional InformationSilkIt is strong and flexible.It is comfortable to wear in all weather. It holds between 11% and 12% humidity during winter and summer sessions.It also creates a paper-burning smell during burning.Silk is a bright, colorful cloth.So, silk is not the answer.CottonIt has enough pores.Its discoloration level is low.It is breathable and good for all weather.So cotton is not the answer.RayonIt is shinny.It is a breathable fabric.It burned slowly, leaving black ash.So rayon is also not the correct answer.
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