Saved Bookmarks
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Terylene is aA. PolyamideB. PolyesterC. PolyetherD. Polyimide |
| Answer» Correct Answer - B | |
| 202. |
Which of the following polymers are thermoplasticA. teflonB. natural rubberC. neopreneD. polystyrene |
| Answer» Correct Answer - A::D | |
| 203. |
Which fo the following sets contains only copolymers?A. SBR , glyptal, nylon-6,6B. Polythene , Polyester , PVCC. Nylon-6,butyl rubber , neopreneD. Malnac, bakelite , teflon |
|
Answer» Correct Answer - A Styrene-butadine rubber (SBR) , glyptal , nylon-66 are copolymers. |
|
| 204. |
Correct statement for thermoplastic polymer isA. It does not become soft on heating uder pressureB. It cannot be remouldedC. It is either linear or branched chain polymerD. It is a cross-linked polymer |
|
Answer» Correct Answer - C Thermoplastic polymers are linear of slightly branched polymers in which the intermolucular forces of attraction are intermediate between elastomers and fibres. These polymers soften on heating and become rigid on cooling. The process of softening , moulding and cooling can be repeated as often as desired . It is not a cross-linked polymer. |
|
| 205. |
Structure of (monomer unit of) natural rubber is:A. `H_(2)C=overset(CH_(3))overset(|)(C)-CH=CH_(2)`B. `H_(2)C=overset(Cl)overset(|)(C)-CH=CH_(2)`C. `H_(2)C=overset(C_(6)H_(5))overset(|)(C)-CH=CH_(2)`D. `(-CH_(2)-CH_(2)-)_(n)` |
| Answer» Correct Answer - A | |
| 206. |
Polymer containing nitrogen isA. DacronB. Buna -sC. PAND. Dextron |
| Answer» Correct Answer - C | |
| 207. |
A polymer containing more than one type of monomer is called _____.A. HeteropolymerB. HomopolymerC. MonomerD. Polyester |
| Answer» Correct Answer - A | |
| 208. |
A polymer containing nitrogen isA. bakeliteB. DacronC. rubberD. nylon-66 |
|
Answer» Correct Answer - D Nylon-6,6 is a polymer of `COOH-(CH_(2))_(4)-COOH`(adipic acid ) and `H_(2)N-(CH_(2))_(6)-NH_(2)` (hexamethylenediamine). Hence , nylon -6,6 has nitrogen in it . |
|
| 209. |
A thermoplastic among the following is:A. bakeliteB. polystyreneC. teryleneD. urea-fonrnldehyde resin |
| Answer» Correct Answer - B | |
| 210. |
Of the following, which one is classfied as polyester polymer?A. MelamineB. Nylon-66C. TeryleneD. Bakelite |
|
Answer» Correct Answer - C |
|
| 211. |
Which of the following statements is false?A. Nylon-66 is an example of elastomerB. The repeat unit in natural rubber is isopreneC. Both starch and cellulose are polymers of glucoseD. Artificial silk is derived from cellulose |
|
Answer» Correct Answer - A |
|
| 212. |
Which of the following is a nitrogen containing polymer ?A. bakeliteB. dacronC. rubberD. nylon-6,6 |
| Answer» Correct Answer - D | |
| 213. |
Which of the following rubber is not a polydiene?A. NitrileB. PolyisopreneC. PolychloropreneD. Thiokol |
| Answer» Correct Answer - D | |
| 214. |
Which of the following is not a condensation polymer?A. GlyptalB. DacronC. NeopreneD. Melamine |
|
Answer» Correct Answer - C |
|
| 215. |
Nylon is an example of:A. PolyetheneB. PolyesterC. polysaccharideD. polyamide |
|
Answer» Correct Answer - D |
|
| 216. |
Which of the following is not a biodegradable polymer?A. GlyptalB. Poly hydroxy butyrate-co-hydroxy valerateC. PHBVD. Nylon-2-nylon-6 |
| Answer» Correct Answer - A | |
| 217. |
Which of the following is a biodegradable polymer ?A. PVCB. Nylon-6C. CelluloseD. Polythene |
| Answer» Correct Answer - C | |
| 218. |
Identify the incorrect statement .A. Polymers are macromoleculesB. Polymers have high molecular massC. The repeating structural unit of a polymer is called monomerD. None of the above |
|
Answer» Correct Answer - D All of the given statements are correct . Polymers are the macromolecules haing high molecular mass. Polymers are formed by the repeating structural units, called monomers. |
|
| 219. |
Natural rubber is a polymer of:A. cis-isopreneB. trans-isopreneC. Both (a) and (b)D. None of these |
|
Answer» Correct Answer - A Natural rubber is a polymer of cis-isoprene . |
|
| 220. |
Which one of the following sets from the biodegradable polymer?A. `CH_(2)=CH-CN` and `CH_(2)=CN-CH=CH_(2)`B. `H_(2)N-CH_(2)-COOH` and `H_(2)N-(CH_(2))_(5)-COOH`C. D. |
|
Answer» Correct Answer - B |
|
| 221. |
Which one of the following sets from the biodegradable polymer ?A. `CH_(2)=CH-CN and CH_(2)=CH-CH=CH_(2) `B. `H_(2)N-CH_(2)-COOH and H_(2)N-(CH_(2))_(5)-COOH` |
|
Answer» Correct Answer - B Biodegradable polymers have tendency to break down and loose their initial characteristics , e.g. `H_(2)N-CH_(2)-COOH+HNH-(CH_(2))_(5)-COOH underset(-H_(2)O)overset(Delta)to underset("Nylon-2-nylon-6")([--HN-CH_(2)-CO-NH-(CH_(2))_(5)-CO--]_(n)` |
|
| 222. |
Which of the following is a biodegradable polymer?A. PolytheneB. PVCC. BakeliteD. PHBV |
| Answer» Correct Answer - D | |
| 223. |
Which one of the following sets forms biodegradable polymer?A. `CH_(2) = CH - CH " and CH_(2) = CH - CH = CH_(2)`B. `H_(2)N - CH_(2) - COOH` and `H_(2)N - (CH_(2))_(5) - COOH`C. D. |
|
Answer» Correct Answer - B The pair forms a set of biodegradable polymer |
|
| 224. |
Which of the following is called polymide ?A. RayonB. NylonC. OrlonD. Terylene |
|
Answer» Correct Answer - B Nylon is polymide. It has `(-CO - NH -)` linkage |
|
| 225. |
Teflon, polystyrene and neoprene are all:A. CopolymersB. Condensation polymersC. HomopolymersD. Monomers |
|
Answer» Correct Answer - C Definition |
|
| 226. |
Teflon is a polymer of:A. tetrafluoroethyleneB. tetraiodoethyleneC. tetrabromoethyleneD. tetrachloroethylene |
|
Answer» Correct Answer - A |
|
| 227. |
Ebonite is:A. Natural rubberB. Synthetic rubberC. Highly vulcanised rubberD. Polypropene |
|
Answer» Correct Answer - C Definition |
|
| 228. |
Which one is a natural polymer ?A. ProteinsB. CelluloseC. RubberD. All the above |
| Answer» Correct Answer - D | |
| 229. |
Explain the terms polymer and monomer. |
|
Answer» Polymers are high molecular mass of macromolecules composed of repeating structural units derived from monomers. Polymers have a high molecular mass (103-107u). In a polymer, various monomer units are joined by strong covalent bonds. Polymers can be natural as well as synthetic. Polythene, rubber and nylon 6,6 are examples of polymers. Monomers are simple, reactive molecules that combine with each other in large numbers through covalent bonds to give rise to polymers. For example ethene, propene, styrene, vinyl chloride. |
|
| 230. |
Baby feeding bottles and soft drinks bottles are usually made up ofA. polyurethaneB. polyesterC. polyamideD. polyethylene-HDPE |
|
Answer» Correct Answer - D Baby feedin bottles and soft drinks bottles are usually made up of high density polyethylene (HDPE) |
|
| 231. |
THERMOPLASTIC & THERMOSETTING POLYMER |
|
Answer» Thermoselting polymer : Balkelite Thermoplastic polymer : Polythene or polystyrene |
|
| 232. |
Define thermoplastic and thermosetting polymer. Give one example of each. |
|
Answer» Thermoplastic polymer: These polymer are capable of repeatedly rottening on heating and hardening on cooloing.e.g- polythene. Thermosetting polymer: These polymer on heating undergo extensive cross linking in moulds and again become infuricate.These can not be reduced.Ex- Bakelite. |
|
| 233. |
Out of polyvinyl chloride and bakelite, thermoplastic polymer. ____ is a thermoplastic polymer |
| Answer» Correct Answer - polyvinyl chloride | |
| 234. |
Synthetic polymer prepared by using caprolactam is known asA. teryleneB. teflonC. nylon -6D. neoprene |
|
Answer» Correct Answer - C Caprolactam is the monomer unit of nylon-6 |
|
| 235. |
Polymers are classified into elastomers, fibres, thermoplastic and thermosetting plastics, depending upon the intermolecular forces. Fill in the vacant boxes given below: |
Answer»
|
|
| 236. |
What type of polymer does bakelite belong to, thermoplastic or thermosetting? |
| Answer» Correct Answer - Thermosetting | |
| 237. |
The fomation of which of the following polymer involves hydrolysis reaction -A. nylon 6, 6B. teryleneC. nylon 6D. bakelite |
| Answer» Correct Answer - C | |
| 238. |
On complete hydrogenation, natural rubber producesA. ethylene propylene copolymerB. vulcanised rubberC. polypropyleneD. polybutylene |
| Answer» Correct Answer - A | |
| 239. |
Which of the following statements about low density polyethylene is false -A. its synthesis requires high pressureB. it is a poor conductor of electricityC. its synthesis requires dioxygen or a peroxide initiator as a catalystD. It is used in the manufacture of buckers, dustbins etc. |
| Answer» Correct Answer - D | |
| 240. |
High of density polyethylene isA. linear polymerB. branched polymerC. cross linked polymerD. rubber |
| Answer» Correct Answer - A | |
| 241. |
Correct decreasing order of molecular forces of polymer is (i) Thermosetting (ii) fibres (iii) Thermoplastic (iv) elastomersA. `1gt2gt3gt4`B. `2gt1gt3gt4`C. `4gt3gt2gt1`D. `2gt3gt1gt4` |
| Answer» Correct Answer - B | |
| 242. |
Polyethylene is a/an :A. random co-polymerB. homopolymerC. alternate co-polymerD. cross-linked co-polymer |
| Answer» Correct Answer - B | |
| 243. |
Among the following polymers, the strongest molecular forces are present in:A. ElastomersB. FibresC. ThermoplasticsD. Thermosetting polymers |
|
Answer» Correct Answer - B Definition |
|
| 244. |
Low density polyethylene isA. cross linked polymerB. branched polymerC. linear polymerD. condensation polymer |
| Answer» Correct Answer - B | |
| 245. |
Which polymer is used in the manufacture of paints and lacquers?A. PolypropeneB. Polyvinyl chlorideC. GlyptalD. Bakelite |
| Answer» Correct Answer - C | |
| 246. |
Which of the following is used to prepare paints?A. chloropreneB. nylonC. teryleneD. glyptal |
| Answer» Correct Answer - D | |
| 247. |
Which polymer is used in the manufacture of paints and lacquers -A. bakeliteB. glyptalC. polypropeneD. polyvinyl chloride |
| Answer» Correct Answer - B | |
| 248. |
In order to give strength and elasticity, natural rubber is heated withA. SulphurB. OxygenC. ChlorineD. Nitrogen |
| Answer» Correct Answer - A | |
| 249. |
The polymerization process in which two or more chemically different monomers take part to form a polymer is calledA. addition polymerizationB. copolymerizationC. chain polymerizationnD. homopolymerization |
|
Answer» Correct Answer - B Copolymerisation is a polymerization reaction in which a mixture of more than one monomeric species is allowed to polymerise and form copolymer |
|
| 250. |
Which of the following has weak molecular forces ?A. Nylon-6B. Nylon-66C. silkD. Buna-S |
| Answer» Correct Answer - D | |