Question

write true or false
1. Spandex is used for making swimwear.
2. Polyester fibres are also known as Orlon.
3. Plastics are generally good conductors of heat.​

Answer 1

1. True

2. False

3. False

......HAVE A GOOD DAY

Answer 2

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1. Spandex is used for making swimwear. [ True ]

Swimming suits and trunks are made up of Nylon and polyester but mostly blended with a elastic synthetic fibre known as Lycra or Spandex. It was prepared at Du point labarotary. It is a light weight, elastic and wrinkle-free fibre.

2. Polyester fibres are also known as Orlon. [ False ]

Orlon is the compound of vinyl cyanide and consists of acrylic molecules. It is light weight, and wrinkle free fibre which is used as artificial wool because they are cheaper than the natural wool.

3. Plastics are generally good conductors of heat. [ False ]

Plastics are made in laboratories and are the bad conductors of electricity because they have no free electrons. Due to this property, they are often used as insulating material like covering of sockets and wires etc.