20) What is yeast?
21) What is Rayon?
22) What is nylon?
23) What is artificial silk?
24) What is petro chemical?
24) What is acrylic?
Answers
20 ) Yeast is a single-celled microorganism that is a member of the Fungi kingdom. Yeast is found in nature as well as within our bodies. It consumes sugar and produces by-products such as carbon dioxide, alcohol, and other chemical compounds. Yeast is an essential ingredient in baking, brewing, and wine making.
21 ) Rayon is a man-made fibre prepared from a natural raw material called cellulose by chemical treatment. The cellulose required for making rayon is obtained from wood pulp. Rayon is obtained by the chemical treatment of wood pulp.
22 ) Nylon is a synthetic fibre made from coal, water and air. It is elastic, very lustrous and easy to wash. It dries quickly and retains its shape.
23 ) Rayon, a synthetic fibre, is also called artificial silk.
24 ) Petrochemicals (sometimes abbreviated as petchems ) are the chemical products obtained from petroleum by refining. Some chemical compounds made from petroleum are also obtained from other fossil fuels, such as coal or natural gas, or renewable sources such as maize, palm fruit or sugar cane.
25 ) Acrylic- Acrylic is a man-made fibre. Acrylic is known as artificial wool or synthetic wool because it resembles wool. Acrylic is cheaper than natural wool and can be dyed in various colour. This makes acrylic is very popular among other fabrics.
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Answer:
1)a substance used for making bread rise and for making beer, wine, etc.
2)a textile fibre or fabric made from regenerated cellulose
3)very strong man-made material that is used for making clothes, rope, brushes, etc.
4)Artificial silk or art silk is any synthetic fiber which resembles silk, but typically costs less to produce. Products made from petrochemicals include such items as plastics, soaps and detergents, solvents, drugs, fertilizers, pesticides, explosives, synthetic fibres and rubbers, paints, epoxy resins, and flooring and insulating
materials.
5)Acrylic is a transparent plastic material with outstanding strength, stiffness, and optical clarity. artificial material that is used in making clothes and paint