Recent questions in Polymers

In which type of polymerisation mechanism small molecules such as $H_2O,NH_3,HCl,ROH,.....$ are lost?

asked Mar 12, 2014 by sreemathi.v

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Which type of polymer undergoes permanent change on heating?

asked Mar 12, 2014 by sreemathi.v

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State the intermolecular forces of polyamides and polyesters respectively

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Sulphur cross links are introduced in natural rubber.State the incorrect reason of this statement .

asked Mar 12, 2014 by sreemathi.v

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Which set of configuration is of natural rubber and Gutta-Percha?

asked Mar 12, 2014 by sreemathi.v

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Which of the following is is a polyamide?

asked Mar 12, 2014 by thanvigandhi_1

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Which is not a polymer?

asked Mar 12, 2014 by thanvigandhi_1

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Which of the following is a fully fluorinated polymer?

asked Mar 12, 2014 by thanvigandhi_1

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The trade name of polyacrilonitrile is

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The number average molecular mass and mass average molecular mass of a polymer are respectively 30,000 and 40,000. The poly dispersity index of the polymer is

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Detect the incorrect set of polymer : monomer

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On controlled hydrolysis and condensation $R_3\: SiCl$ yields

asked Mar 12, 2014 by thanvigandhi_1

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Which of the following is the molecular formula of Dacron?

asked Mar 12, 2014 by sreemathi.v

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Which one of the following polymer is used for making nonstick utensils

asked Mar 12, 2014 by thanvigandhi_1

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Acrylite is the commercial name of

asked Mar 12, 2014 by thanvigandhi_1

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Why should one always use purest monomer in free radical polymerisation reaction?

asked Mar 12, 2014 by sreemathi.v

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The polymer used for the manufacture of paint and laqures is

asked Mar 12, 2014 by thanvigandhi_1

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Identiify the chain growth polymer from the following

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Depending on the mode of synthesis polymers are classified into

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Polymer of _____________ is used to make refrigerator linings?

asked Mar 12, 2014 by sreemathi.v

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PHBV IS an example for

asked Mar 12, 2014 by thanvigandhi_1

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Polymers are classified on the basis of structure in to

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In what ratio PGA & PLA is used to make absorbable sutures to close an internal or external wound and has replaced catgut.

asked Mar 12, 2014 by sreemathi.v

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The presence of which of the following inhibit the free radical polymeisaation of a vinyl derivative?

asked Mar 12, 2014 by thanvigandhi_1

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How are polymers classified on the basis of source of availability

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The given polymer belongs to

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$\bar{M_N}$ of polymers is always determined by which of the following methods?

asked Mar 12, 2014 by sreemathi.v

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buna-S ,buna –N are

asked Mar 12, 2014 by thanvigandhi_1

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Step growth polymeristion is otherwise called

asked Mar 12, 2014 by thanvigandhi_1

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Depending upon intermolecular forces polymes are classified into

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Which of the following is the formula of number average molecular mass $\bar{M_N}$?

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Addition polymerisation is otherwise called

asked Mar 12, 2014 by thanvigandhi_1

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Which of the following represents neoprene polymer?

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Which of the following condition is for polydisperse polymers?

asked Mar 12, 2014 by sreemathi.v

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The monomer of polystyrene is

asked Mar 12, 2014 by thanvigandhi_1

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Which one of the following is the formula of weight average molecular mass$(\bar{M_w})$:-

asked Mar 12, 2014 by sreemathi.v

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Buna-S and Buna-N has one monomer in common:

asked Mar 12, 2014 by sreemathi.v

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Which of the following statements is not correct

asked Mar 12, 2014 by thanvigandhi_1

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In Bakelite the rings are joined to each other through

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Among the following polymers the intermolecular forces are weaker in

asked Mar 12, 2014 by thanvigandhi_1

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Structure of some common polymers are given which of the following is not correctly matched?

asked Mar 12, 2014 by thanvigandhi_1

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Which of the following is a heterocyclic triamine with formaldehyde?

asked Mar 12, 2014 by sreemathi.v

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What is the product formed in the below polymerisation?

asked Mar 12, 2014 by sreemathi.v

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Which of the following is the monomers of terylene?

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Which of the following compounds are formed by step-growth polymerisation?

asked Mar 12, 2014 by sreemathi.v

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Which one of the following shows the polyacrylonitrile polymer?

asked Mar 12, 2014 by sreemathi.v

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State the monomer & polymer involved in the polymerisation process? $nF_2C=CF_2\quad\underrightarrow{\text{Heat}}\quad -(F_2C-CF_2-)_n$

asked Mar 12, 2014 by sreemathi.v

1 answer

Which of the following is used as a catalyst in the preparation of high density polythene(HDP)?

asked Mar 12, 2014 by sreemathi.v

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Which of the following is not a chain growth polymerisation process?

asked Mar 12, 2014 by sreemathi.v

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How is PVC made soft?

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