Recent questions and answers in Polymers

What is Vulcanization?

asked Jul 11, 2017 by pady_1

1 answer

What are Natural Rubber and Synthtic Rubber.

answered Jul 11, 2017 by pady_1

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Give the preparation of Nylon 6, 6 and Nylon 6

answered Jul 11, 2017 by pady_1

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What are Polydispersity Index

answered Jul 11, 2017 by pady_1

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Explain the Classification of Polymers Based on Molecular Forces

answered Jul 11, 2017 by pady_1

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Give the Classification of Polymers Based on Source of Origin

asked Jul 11, 2017 by pady_1

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What are Polymers?

answered Jul 11, 2017 by pady_1

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(a) What does it mean for a molecule or a ligand to be "chiral"? What properties does chirality impart to a molecule? (b)What is the difference between a heterogeneous and a homogeneous catalyst? What are some of the advantages of homogeneous catalysts?

answered Dec 29, 2016 by sharmaaparna1

1 answer

famous sweet in hyderabad , Rishi bought some sweets . He requested the sales boy to put the sweets in a polythene bag.The sales boy refused to do so, instead he kept the sweet box in a paper bag. After reading the above passage answer the following questions. (i) Why did the sales boy refuse to put the sweet box in a polythene bag? (ii) As a student of chemistry, why would you advocate the use of paper bags instead of polythene bags?Which values are promoted through the use of paper bag? (iii) Suggest two activities to promote these values.

answered Nov 28, 2016 by meena.p

1 answer

Which of the following polymers soften on heating and harden on cooling? What are the polymers with this property collectively called? What are the structural similarities between such polymers?

answered Nov 28, 2016 by meena.p

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Explain elastomeric polymers and fibres

answered Nov 22, 2016 by meena.p

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(a) Give an example of a synthetic rubber and mention its main advantage. (b) Write the structures of the monomers of Dacron. (c) Arrange the following polymers in the increasing order of tensile strength. Nylon-6, Buna-S, Polythene.

answered Nov 16, 2016 by meena.p

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Give the preparation and uses of PVC

answered Nov 10, 2016 by meena.p

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a)What are polysaccharides ? Give one example b)Give the preparation and uses of PVC

answered Nov 8, 2016 by meena.p

1 answer

How do you explain the functionality of monomer?

answered Nov 4, 2016 by meena.p

1 answer

Low density polythene and high density polythene , both are polymers of ethene but there is marked difference in their properties . Explain

answered Nov 4, 2016 by meena.p

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(a) What is the role of benzoyl peroxide in polymerization of ethane ? (b) What are LDPE and HDPE ? How are they prepared?

answered Oct 31, 2016 by meena.p

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Write the information asked in the following polymers: (i) Bakelite -Materials used for preparation (ii) Nylon -6,6-Material required for preparation (iii) Synthetic rubber - monomeric repeating unit (iv) PVC - Monomeric repeating unit

answered Oct 24, 2016 by meena.p

1 answer

Write (a) Reaction involved in the preparation of a biodegradable polyester. (b) Monomer unit of synthetic rubber (neoprene) (c) One use of Nylon -6,6

answered Oct 20, 2016 by meena.p

1 answer