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MHT-CET Introduction to Polymer Chemistry — practice questions — page 2

Explore 61 free Introduction to Polymer Chemistry questions in MHT-CET Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Introduction to Polymer Chemistry questions and exercises with answers

Showing questions 31–60 of 61.

Natural rubber is mainly obtained from which tree?Read the answer and worked solution →Which initiator is used in making low density polythene?Read the answer and worked solution →Why is LDP less dense than HDP?Read the answer and worked solution →Which catalyst is used for making HDP?Read the answer and worked solution →Ziegler-Natta catalyst is a combination of which two compounds?Read the answer and worked solution →HDP is essentially which type of polymer?Read the answer and worked solution →Which item is typically made from HDP?Read the answer and worked solution →Teflon is chemically which polymer?Read the answer and worked solution →Which initiators polymerize tetrafluoroethene to Teflon?Read the answer and worked solution →Teflon is widely used to make what?Read the answer and worked solution →Teflon is chemically inert mainly due to which bond?Read the answer and worked solution →Polyacrylonitrile is used as a substitute for which material?Read the answer and worked solution →Which linkage defines polyamides?Read the answer and worked solution →Nylon 6,6 is prepared from which pair of monomers?Read the answer and worked solution →Nylon 6,6 is which type of polymer?Read the answer and worked solution →Terylene is also called what?Read the answer and worked solution →Terylene is made from which two monomers?Read the answer and worked solution →Bakelite is formed from which two reactants?Read the answer and worked solution →Bakelite is a polymer of which category?Read the answer and worked solution →The intermediate moulding powder in bakelite synthesis is called what?Read the answer and worked solution →Buna-S is a copolymer of which two monomers?Read the answer and worked solution →Buna-S rubber is made from butadiene and styrene in what ratio by parts?Read the answer and worked solution →Buna-S is mostly used for which product?Read the answer and worked solution →Neoprene is an addition polymer of which monomer?Read the answer and worked solution →Neoprene is vulcanized in the presence of which compound?Read the answer and worked solution →Viscose rayon is what kind of cellulose?Read the answer and worked solution →Which reagent converts alkali cellulose into cellulose xanthate?Read the answer and worked solution →Degree of polymerization (DP) means what?Read the answer and worked solution →A polymer's molecular mass is described as what?Read the answer and worked solution →Low molecular mass polymers tend to be what?Read the answer and worked solution →

Worked practice questions

Natural rubber is mainly obtained from which tree?

  1. Pinus roxburghii
  2. Shorea robusta
  3. Hevea brasiliensis
  4. Tectona grandis
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Correct answer: C. Hevea brasiliensis

Hevea brasiliensis latex is the main commercial source of natural rubber.

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Which initiator is used in making low density polythene?

  1. Ziegler-Natta catalyst
  2. Oxygen traces or peroxide
  3. Sodium metal vapour
  4. Dilute sulfuric acid
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Correct answer: B. Oxygen traces or peroxide

A free radical process starts with traces of O2 or a peroxide.

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Why is LDP less dense than HDP?

  1. Heavier atoms in chain
  2. Extra cross links
  3. Branches loosen packing
  4. Higher crystallinity
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Correct answer: C. Branches loosen packing

H-atom abstraction creates branches, so chains pack loosely and density is low.

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More Chemistry topics

ElectrochemistrySolutionsCoordination CompoundsChemical KineticsChemical Bonding and Molecular StructureAldehydes, Ketones and Carboxylic AcidsHydrocarbonsStructure of Atom