InterviewSolution
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InterviewSolution
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.
| 251. |
Low density polyethylene isA. branched polymerB. linear polymerC. copolymerD. step growth polymer |
| Answer» Correct Answer - A | |
| 252. |
Which of the following is used in paints?A. TeryleneB. NylonC. ChloropreneD. Glyptal |
| Answer» Correct Answer - D | |
| 253. |
A condensation polymer among the following isA. DacronB. PolytheneC. Buna-ND. Natural rubber |
| Answer» Correct Answer - A | |
| 254. |
When condesation of hexamethylene diamine and adipic acid in a inert atmosphere the product obtained isA. a solid polymer of nylon -66B. a semi solid polymer of nylon -66C. a solid polymer of nylon -6D. a semi solid polymer of nylon -6 |
| Answer» Correct Answer - B | |
| 255. |
IUPAC name of hexamethylene diamine isA. hexamethylene 1,6-diamineB. 1,6 -diaminohexamethyleneC. 1,6- diamno hexaneD. 1,6 -hexane-diamine |
| Answer» Correct Answer - D | |
| 256. |
Caprolactam is the monomer of-A. nylon-6B. teryleneC. nylon-6,10D. nylon-6,6 |
| Answer» Correct Answer - A | |
| 257. |
The polymerization process in which two or more chemically different monomers take part to form a polymer is calledA. addition polymerisationB. copolymerisationC. Chain polymerisationD. homo polymerisation |
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Answer» Correct Answer - B Definition |
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| 258. |
In free radical mechanism of polymerization of addition polymer the chain propagation step isA. `I^*+MtoIM^*`B. `"Initiator"toI^*`C. `IM^*+MtoIM" "M^*`D. `I(M)nM^*+I(M)nM^*toI(M)_nM-M(M)_n` |
| Answer» Correct Answer - C | |
| 259. |
A polymer made from a polymerization reaction that produces small molecules (such as water) as well as the polymer is classified as _________ polymer. |
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Answer» Correct Answer - C Definition |
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| 260. |
Which one of the following monomers gives the polymer neoprene on polymerization?A. `CH_(2)=CH-Cl`B. `Cl_(2)C="CC"l_(2)`C. `F_(2)C=CF_(2)`D. `CH_(2)=underset(Cl)underset(|)C-CH=CH_(2)` |
| Answer» Correct Answer - D | |
| 261. |
Which one of the following monomers gives the polymer neoprene on polymerization?A. `CH_(2)=overset(Cl)overset(|)C CH=CH_(2)`B. `CF_(2)=CF_(2)`C. `CH_(2)=ChCl`D. `C Cl_(2)=C Cl_(2)` |
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Answer» Correct Answer - A Neoprene is an addition polymer of chloroprene or chloro-1,3-butadiene (monomet). `nCH_(2)=underset("Chloroprene")(CH)-overset(Cl)overset(|)C=CH_(2)overset("Polymerisation")to` `-[CH_(2)-CH=overset(Cl)overset(|)C-CH_(2)-]_(n)` |
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| 262. |
Nylon -66 is made from hexamethylene diamine andA. Phthalic acidB. sulphurous acidC. adipic acidD. glycol |
| Answer» Correct Answer - C | |
| 263. |
Caprolactum polymerises to give:A. teryleneB. teflonC. glyptalD. nylon-6 |
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Answer» Correct Answer - D |
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| 264. |
Nylon -`66` isA. PolyesterB. PolyamideC. polytheneD. Polyvinyl |
| Answer» Correct Answer - B | |
| 265. |
Caprolactam has the functional groupA. `- OH` (alcohol)B. `-COOH` (acid)C. `-CHO` (aldehyde)D. `-CO-NH-` (amide) |
| Answer» Correct Answer - D | |
| 266. |
A polymer made from a polymerization reaction that produces small molecules (such as water ) as well as the polymer is classified as a/an… polymer.A. additionB. naturalC. condensationD. elimination |
| Answer» Correct Answer - C | |
| 267. |
Which of the following is a polyamide?A. NylonB. RayonC. OrlonD. terylene |
| Answer» Correct Answer - A | |
| 268. |
Terylene polymerises at 573 K inA. Presence of `O_2`B. Presence of `H_2`C. Presence of a and bD. Vaccum |
| Answer» Correct Answer - D | |
| 269. |
Biodegradalbe polymer whichcan be produced from glycine and aminocaproic acid isA. Nylon 6,6B. Nylon-2-nylon-6C. `PHBV`D. Buna - N |
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Answer» Correct Answer - B Nylon - 2 - nylon - 6 is biodegradalbe and is an alternating polyamide copolymer of glycine `(H_(2) NCH_(2) CO_(2)H)` and aminocaproic acid `(H_(2) N (CH_(2))_(5) COOH)`. |
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| 270. |
Which of the following organic compounds polymerises to form the polyester dacron -A. propylene and para - HO-`(C_6H_4)` -OHB. benzoic acid and ethanolC. terephthalic acid and ethylene glycolD. benzoic acid and para- HO-`(C_6H_4)` -OH |
| Answer» Correct Answer - C | |
| 271. |
Dacron ,a synthetic polyester fibre is made fromA. ester of terephthlic acid and ethylene glycolB. Phthalic acid and celluloseC. caprolactum and alcoholD. alcohol and ethene. |
| Answer» Correct Answer - A | |
| 272. |
Caprolactam is used for the manufacture ofA. teflonB. teryleneC. nylon 6, 6D. nylon 6 |
| Answer» Correct Answer - D | |
| 273. |
Biodegradable polymer which can be produced from glycine and aminocaproic acid.A. nylon 2-nylon 6B. PHBVC. buna-ND. nylon-6,6 |
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Answer» Correct Answer - A Nylon-2-nylon-6 It is an alternating polymide of glycine (containing two carbon atoms) and amino caproic acid or 6-aminohexanoic acid (containing six acarbon atoms). `underset("Glycine")(nH_(2)N)-Ch_(2)-COOH` ` underset("Amino caproic acid")(+nH_(2)N-(CH_(2))_(5)-COOHto)` `-[NH-CH_(2)-underset("Nylone-2-nylon-6")underset(O)underset(||)C-NH-(CH_(2))_(5)-underset(O)underset(||)C-]_(n)` It is a biadegradable step-growth copolymer. |
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| 274. |
Biodegradable polymer which can be produced from glycine and aminocaproic acid.A. Nylon 2 - nylon 6B. PHBVC. Buna-ND. Nylon 6,6 |
| Answer» Correct Answer - A | |
| 275. |
Which out of Buna-S, protenis and PVC, is a natural polymer ? |
| Answer» Buna-S is a natural polymer. | |
| 276. |
The monomer used in novolac, a polymer used in paints .A. butadiene and styreneB. butadiene and acrylonitrileC. phenol and formaldehydeD. melamine and fomaldehyde |
| Answer» Correct Answer - D | |
| 277. |
Buna-S is a polymer of :A. butadiene onlyB. butadiene and nitrylC. styrene onlyD. butadiene and styrene |
| Answer» Correct Answer - D | |
| 278. |
The two monomers of Buna-S are-A. lsopropyleneB. StyreneC. AlkylonitrileD. Butadiene |
| Answer» Correct Answer - B::D | |
| 279. |
Monomers of Buna-S are-A. styrene and butadieneB. butadieneC. ioprene and butadieneD. vinyl chloride and sulphur |
| Answer» Correct Answer - A | |
| 280. |
What is the difference between Buna-N and Buna-S. |
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Answer» Both Buna-N and Buna-S are synthetic ruber and are co-polymers in nature. They differ in their constituents Buna -N : Condtituents are : buta-1, 3-diene and acrylonitrile. Buna-S : Constituents are : buta-1, 3-diene, and styrene. They condense in the presence of Na. |
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| 281. |
Which of the following is coated as a thin layer on the inner side of non-stick pans?A. BakeliteB. PVCC. TeflonD. Polypropylene |
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Answer» Correct Answer - C |
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| 282. |
The number of polypeptide chains present in a molecule of haemoglobin is/areA. fourB. oneC. twoD. three |
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Answer» Correct Answer - A Haemoglobin molecule contains four polypeptide chains. |
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| 283. |
A synthetic rubber which is resistant to the action of oils gasoline and other solvents isA. buna-SB. polyisopreneC. neopreneD. polystyrene |
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Answer» Correct Answer - C Neoprene is synthetic rubber,It is a polymer of chloroprene and is resistant to the action of oils, gasoline and other solvents. |
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| 284. |
Define homopolymers, co-polymers and plasticizers |
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Answer» For the definition of homopolymers and co-polumers. For the definition of plasticizes. |
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| 285. |
Polymer formation from monomers starts by:A. condensation reaction between monomersB. coordination reaction between monomersC. conversion of monomer to monomer ions by protonsD. hydrolysis of monomers |
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Answer» Correct Answer - A |
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| 286. |
Which of the following is used in plants?A. TeryleneB. NylonC. GlyptalD. Chloroprene |
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Answer» Correct Answer - C |
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| 287. |
Which of the following is a condensation polymer ?A. TeflonB. PVCC. PolyesterD. Neoprene |
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Answer» Correct Answer - C Polyester is condensation polymer of glycol and terephthalic acid . Teflon , PVC and neoprene are the addition polymers. |
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| 288. |
A condensation polymer among the following is:A. dacronB. PVCC. polystyreneD. teflon |
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Answer» Correct Answer - A |
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| 289. |
Monomer of A. 2-methylpropeneB. styreneC. propyleneD. ethene |
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Answer» Correct Answer - A |
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| 290. |
Which of the following is not correctly matched ?A. Neoprene : `[-CH_(2)-underset(Cl)(C)=CH-CH_(2)-]_(n)`B. Nylon-6,6: `[-NH-(CH_(2))_(6)-NH-CO(CH_(2))_(4)-overset(O)overset(||)(C)-O-]_(n)`C. D. Teflon: `[--CF_(2)-CF_(2)--]_(n)` |
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Answer» Correct Answer - C Terylene contains ester linkage , i.e., `-OCH_(2)-CH_(2)-O-CO-` and not keton linkage . |
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| 291. |
Which of the following polymers is not correctly matched ?A. Formation of dacron-Step growth polmerisationB. Formation of polytetrafluoroethene- step growth polymerisationC. Formation of polythene-Chain growth polymerisation in presence of benzoyl peroxideD. Formation of polyacylonitrile - Chain growth polymerisation in presence of peroxide |
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Answer» Correct Answer - B Polytetrafluroethene ( teflon ) is a chain growth polymer formed by polymerisation of tetrafluoroethene in presence of persulphate catalyst. |
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| 292. |
Which of the following is not correctly matched?A. B. C. D. |
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Answer» Correct Answer - B |
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| 293. |
Callulose is polymer ofA. glucoseB. fructoseC. riboseD. sucrose |
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Answer» Correct Answer - A Cellulose is a polymer of glucose, i.e. `C_(6)H_(12)O_(6).` |
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| 294. |
Monomer of `[-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)-]_(n) is `A. 2-methylpropeneB. styreneC. propyleneD. ethene |
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Answer» Correct Answer - A Monomer of `[-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2)-]_(n)is` 2-methylpropene of isobutene, `H_(3)C-underset(CH_(3))underset(|)C=CH_(2)` |
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| 295. |
Monomer of `[-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-CH_(2)]_(n)` isA. styreneB. 2-methylpropeneC. proplyeneD. ethen |
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Answer» Correct Answer - B `underset(2-"Methylpropene")(noverset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)=CH_(2))overset("Polymerization")rarr[-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-CH_(2)-]_(n)` |
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| 296. |
The monomer of the polymer `~CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)~`A. `H_(2) C = C (CH_(3))_(2)`B. `(CH_(3))_(2) = C (CH_(3))_(2)`C. `CH_(3) CH = CHCH_(3)`D. `CH_(3) CH = CH_(2)` |
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Answer» Correct Answer - A `nH_(2)C = C(CH_(3))_(2) rarr ~ CH_(2)- overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-CH_(2)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C~` |
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| 297. |
Shyam went to grocery shop to purchase some food items. The shopkeeper packed all the item in polythene bags and gave them to Shyam. But, Shyam refused to accept the polythene bags and asked the shopkeeper to pack the items in paper bags. He informed the shopkeeper about the heavy penalty imposed by the government for using polythene bags. The shopkeeper promised that he would use paper bags in future in place of polythene bags. Why did Shyam refused to accept the items in polythene bags ? |
| Answer» Polythene bags are made up of non-biodegradable polymers. So, Shyam refused to accept these bags. | |
| 298. |
How do you explain the functionality of a monomer ? Give suitable example. |
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Answer» The functionality of a monomer is the number of binding sites that are present in the monomer. Eg. : The functionality of monomers such as ethane and propene is one and that of 1,3-butadiene and adipic acid is two. |
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| 299. |
How LDP and HDP are synthesized? |
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Answer» Low density polythene: It is obtained by the polymerization of ethene under high pressure of 1000 to 2000 atmospheres at a temperature of 350 K to 570 K in the presence of traces of dioxygen or a peroxide initiator (catalyst). High density polythene: It is formed when addition polymerisation of ethene takes place in a hydrocarbon solvent in the presence of a catalyst Ziegler-Natta catalyst at a temperature of 333 K to 343 K and under a pressure of 6-7 atmospheres. |
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| 300. |
How will you differentiate between LDP and HDP? |
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Answer» Low density polythene: It is obtained by the polymerisation of ethene under high pressure of 1000 to 2000 atmospheres at a temperature of 350 K to 570 K in the presence of traces of dioxygen or a peroxide initiator (catalyst). Low density polythene is chemically inert and tough but flexible and a poor conductor of electricity.e.g., squeeze bottles, toys and flexible pipes. High density polythene: It is formed when addition polymerisation of ethene takes place in a hydrocarbon solvent in the presence of a catalyst Ziegler‐Natta catalyst at a temperature of 333 K to 343 K and under a pressure of 6‐7 atmospheres. HDP consists of linear molecules and has a high density due to close packing. It is more tougher and harder. It is used for manufacturing buckets, dustbins, bottles, pipes, etc. |
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