1. Explain why some fibres are called synthetic
2. Give some examples of synthetic fibres with their source material.
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Answers
1. Synthetic fibres are made from petroleum based chemicals (or) petrochemicals are subjected to various chemical processes to obtain synthetic fibres. Due to this reason , they are called synthetic fibres (or) artificial fibres and synthetic fibres are made of polymers
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2. Nylon , polysters , Rayon , Acrylic are examples of synthetic fibres.
• Nylon is made of chemical units called polyamides (carbon , oxygen , nitrogen)
• Polyster is made by reacting dicarboxyliic acid with dihydric alcohol.
• The cellulose collcted from plants is treated with sodium hydroxide , carbondisulphide and into dilute sulphuric acid.
• Acrylic is made from the combination of limestone , coal , air , water and oil
Answer:
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Requiredanswer:−
1. Synthetic fibres are made from petroleum based chemicals (or) petrochemicals are subjected to various chemical processes to obtain synthetic fibres. Due to this reason , they are called synthetic fibres (or) artificial fibres and synthetic fibres are made of polymers
━━━━━━━━━━━━━━━━━━━━
2. Nylon , polysters , Rayon , Acrylic are examples of synthetic fibres.
• Nylon is made of chemical units called polyamides (carbon , oxygen , nitrogen)
• Polyster is made by reacting dicarboxyliic acid with dihydric alcohol.
• The cellulose collcted from plants is treated with sodium hydroxide , carbondisulphide and into dilute sulphuric acid.
• Acrylic is made from the combination of limestone , coal , air , water and oil