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प्रश्न
Assertion: Polytetrafluoroethene is used in making non-stick cookwares.
Reason: Fluorine has highest electronegativity.
विकल्प
Assertion and reason both are correct statement but reason does not explain assertion.
Assertion and reason both are correct statements and reason explains the assertion.
Both assertion and reason are wrong statement.
Assertion is correct statement and reason is wrong statement.
Assertion is wrong statement and reason is correct statement.
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उत्तर
Assertion and reason both are correct statement but reason does not explain assertion.
Explanation:
Teflon is manufactured by heating tetrafluoroethylene with a free radical or persulphate catalyst at high pressures. It is chemically inert and resistant to attack by corrosive reagents. It is used in making oil seals and gaskets and also used for non-stick surface coated utensils.
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संबंधित प्रश्न
How are polythene and neoprene prepared?
Which of the following is a natural polymer ? Buna-S, Proteins, PVC
Write the free radical mechanism for the polymerisation of ethene.
Which of the following statements is not true about low-density polythene?
What is the role of benzoyl peroxide in addition polymerisation of alkenes? Explain its mode of action with the help of an example.
Match the polymer of column I with correct monomer of column II.
| Column I | Column II |
| (i) High density polythene | (a) Isoprene |
| (ii) Neoprene | (b) Tetrafluoroethene |
| (iii) Natural rubber | (c) Chloroprene |
| (iv) Teflon | (d) Acrylonitrile |
| (v) Acrilan | (e) Ethene |
Match the polymers given in Column I with their chemical names given in Column II.
| Column I | Column II |
| (i) Nylon 6 | (a) Polyvinyl chloride |
| (ii) PVC | (b) Polyacrylonitrile |
| (iii) Acrilan | (c) Polycaprolactum |
| (iv) Natural rubber | (d) Low-density polythene |
| (v) LDP | (e) cis-polyisoprene |
Assertion: Olefinic monomers undergo addition polymerisation.
Reason: Polymerisation of vinyl chloride is initiated by peroxides/ persulphates.
Low density polythene and high density polythene, both are polymers of ethene but there is marked difference in their properties. Explain.
The Ziegler Natta catalyst are
Which of the following is chain-growth polymer?
Which one of the following polymers are prepared by addition polymerisation?
Orlon fibres are made up of ______.
\[\ce{X + C + Cl2 ->[High temperature][of about 1000 K] Y + CO}\];
\[\ce{Y + 2H2O -> Z + 2HCl}\]
Compound Y is found in polymeric chain structure and is an electron-deficient Molecule. Y must be:
Which of the following statements about low density polythene is false?
