Which is an example of a synthetic polymer? (a) Cellulose (b) DNA (c) Polyester

Question

Which is an example of a synthetic polymer? (a) Cellulose (b) DNA (c) Polyester (d) Starch (e) Hemoglobin Choose the most correct definition. (a) Organic compounds arc based on carbon, and they usually contain carbon-nitrogen and carbon-hydrogen bonds. (b) Organic compounds are based on nitrogen, and they usually contain carbon-nitrogen and carbon-hydrogen bonds. (c) Organic compounds are based on carbon, and they usually contain carbon-hydrogen and carbon-carbon bonds. (d) Organic compounds arc based on hydrogen, and they usually contain carbon-hydrogen and carbon-oxygen bonds. e) Organic compounds are based on oxygen, and they usually contain

Explanation / Answer

3.

(c) Polyester is an example of synthetic polymer. This is a long-chain polymer composed chemically of at least 85% by weight of an ester. Polyster clothes are very well known.

cellulose is a polysaccharide mainly found in plant cell walls and of vegetable fibreS. DNA is a genetic material found in cells. Starch is also a polysacharide found in various food items like cereals (rice, wheat, and maize) & root vegetables (potatoes and cassava). Haemoglobin is a protein present in blood of vertebrates that transports oxygen.

4)

c) organic compounds are based on carbon, & they usually contain carbon-hydrogen & carbon-carbon bond.

consider the example of hydrocarbons which contain only the carbon-hydrogen & carbon-carbon bond.

Organic compounds can contain carbon-nitrogen & carbon oxygen bonds. Organic compounds are compounds of carbon.

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