Is Polyester Synthetic or ArtificialFibres that are made by human beings are called syntheticfibres. Most synthetic fibres are obtained from coal, petroleum, and natural gas. Rayon, nylon, polyester, acrylic, and spandex are examples of synthetic fibres…

What are Synthetic Fibres and give some ExamplesMost clothing materials or fabrics we use in our day-to-day lives are made from thin, thread-like fibres. Fibres can be either natural or artificial. Natural fabrics have been used for clothing since ancien…

Periodic Trends in Properties of ElementsPeriodicity in Properties : The properties of elements depends upon the electronic configuration which changes along a period and down a group in periodic table. There is periodicity in properties, i.e., repetit…