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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.
| 501. |
The process involving heating of rubber with sulphur is called:A. vulcanisationB. galvanisationC. sulphonationD. bessemerisation |
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Answer» Correct Answer - A Heating of rubber with sulphur or sulphur compounds at 373 K to 415 K in the presence of ZnO is called vulcanisation . |
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| 502. |
The process involving heating of rubber with sulphur is called:A. galvanisationB. bessemerisationC. vulcanisationD. sulphonation |
| Answer» Correct Answer - C | |
| 503. |
Nylon-66 is made by using:A. PhenolB. benzaldehydeC. adipic acidD. succinic acid |
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Answer» Correct Answer - C |
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| 504. |
Terylene is made by polymerization of terephthalic acid with:A. ethylene glycolB. phenolC. ethanolD. catechol |
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Answer» Correct Answer - A |
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| 505. |
Which of the following is nylon 6 ?A. `[HN(CH_2)_4CO]_n`B. `[HN(CH_2)_3CO]_n`C. `[HN(CH_2)_2CO]_N`D. `[HN(CH_2)_5CO]_n` |
| Answer» Correct Answer - D | |
| 506. |
which of the following is nylon 66 ?A. `[OC(CH_2)_6CONH(CH_2)_4NH]_n`B. `[OC(CH_2)_4CONH(CH_2)_6NH]_n`C. `[OC(CH_2)_4CONH(CH_2)_4NH]_n`D. `[OC(CH_2)_6CONH(CH_2)_6NH]_n` |
| Answer» Correct Answer - B | |
| 507. |
Nylon salt is known asA. tetramethylene diammonium adipateB. dimethylene hexammonium adipateC. hexamethylene diammonium adipateD. trimethylene diammonium adipate |
| Answer» Correct Answer - C | |
| 508. |
Nylon is:A. polyetheneB. polyamideC. polyethyleneD. polyester |
| Answer» Correct Answer - B | |
| 509. |
The element present in teflon isA. fluorineB. chlorineC. nitrogenD. oxygen |
| Answer» Correct Answer - A | |
| 510. |
Nylon salt on heating gives nylon -66 . The reaction is known asA. polymerisationB. esterificationC. additionD. trans-esterification |
| Answer» Correct Answer - A | |
| 511. |
Glyptal is classified as aA. polyolefinB. polyesterC. polyamideD. polyether |
| Answer» Correct Answer - B | |
| 512. |
The formula of nylon salt isA. `C_(12) H_(22) O_(4) N_(2)`B. `C_(12) H_(24) O_(4) N_(2)`C. `C_(12) H_(26) O_(4)N_(2)`D. `C_(12) H_(28) O_(4) N_(4)` |
| Answer» Correct Answer - C | |
| 513. |
Correct statement isA. keratin is fibrous proteinB. androsterone is male sex hormoneC. `vitaminB_(1)` is antineutritic factorD. All of the above |
| Answer» Correct Answer - D | |
| 514. |
Which base is present in `RNA` but not in `DNA`?A. uracilB. thiamineC. adenineD. guanine |
| Answer» Correct Answer - A | |
| 515. |
The formula of Nylon-66 can be written asA. `[-OC(CH_(2))_(4) CONH(CH_(2))_(4) NH-]_(n)`B. `[-OC(CH_(2))_(4) CONH(CH_(2))_(6) NH-]_(n)`C. `[-OC (CH_(2))_(6) CONH(CH_(2))_(6) NH-]_(n)`D. `[-OC(CH_(2))_(6)CONH(CH_(2))_(4) NH-]_(n)` |
| Answer» Correct Answer - B | |
| 516. |
Bakelite is prepared by the reaction betweenA. urea and formaldehydeB. ethylene glycolC. phenol and formaldehydeD. tetramethylene glycol |
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Answer» Correct Answer - C Bakelite is a polymer obtained by the condensation reaction between phenol and formaldehyde. It is a condensation polymer and basic unit of Bekelite is Novolac. |
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| 517. |
Bakelite is prepared by the reaction between:A. urea and formaldeydeB. tetra methylene glycol and hexamethylene isocyanateC. phenol and formaldehydeD. ethylene glycol and dimethyl terephthalate |
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Answer» Correct Answer - C |
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| 518. |
Bakelite is prepared by the reaction betweenA. formaldehyde and NaOHB. aniline and ureaC. phenol and methanalD. phenol and chloroform |
| Answer» Correct Answer - C | |
| 519. |
Adipci acid is used in the preparation ofA. Nylon-6B. Nylon- 66C. teryleneD. Teflon |
| Answer» Correct Answer - B | |
| 520. |
Which of the following polymers, need atleast one diene monomer for their preparation-A. dacronB. Buna-SC. neopreneD. novolac |
| Answer» Correct Answer - B::C | |
| 521. |
Two monomers used in the preparation of of dextron areA. 3-hydroxy butanoic acid and 3 -hydroxy pentanoic acidB. `epsilon` -amino caproic acid and glycineC. lactic acid and glycolic acidD. isobutyric acid and isoprene |
| Answer» Correct Answer - C | |
| 522. |
Nylon - 6,6 is a polyamide obainted by the reaction ofA. `COOH(CH_(2))COOH+H_(2)NC_(6)H_(4)NH_(2)-(p)`B. `COOH(CH_(2))_(4)COOH+NH_(2)(CH_(2))_(6)NH_(2)`C. `COOH(CH_(2))_(6)COOH+NH_(2)(CH_(2))_(4)NH_(2)`D. `COOHC_(6)H_(4)COOH-(p)+NH_(2)(CH_(2))_(6)NH_(2)` |
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Answer» Correct Answer - B The monomer units of nylon-66 are obtained by the reaction of hexamethylene diamine and adipic acid. Nylon-66 contain polyamide bond and show condensation. `nH_(2)underset("Hexamethylene diamine")(-(CH_(2))_(6))NH_(2)+` `nHOOC-underset("Adipic acid")((CH_(2))_(4))COOHto` `-[overset(H)overset(|)N-(CH_(2))_(6)-underset("Nylon-66")NHCO-(CH_(2))_(4)-overset(O)overset(||)C-]_(n)` |
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| 523. |
Natural rubber is a polymer ofA. ethyneB. butadieneC. styreneD. isoprene |
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Answer» Correct Answer - D Natural rubber is a linear is a linear polymer of isoprene (2-mathylbuta-1,3 diene): `nCH_(2)=underset(CH_(3))underset(|)(C)-CH=CH_(2)rarr[CH_(2)-underset(CH_(3))underset(|)(C)=CH-CH_(2)]_(n)` |
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| 524. |
In elastomers, the intermolecular forces areA. strongB. weakC. nilD. intermediate |
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Answer» Correct Answer - B In elastomers, the polymer chains are held together by the weakest interomolecular forces. |
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| 525. |
The polymer used in manufacture of electrical goods such as switches ,plug , etc , isA. PolytheneB. BakeliteC. Melamine- formaldehyde-resinD. Neoprene |
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Answer» Correct Answer - B Uses of Bakelite . |
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| 526. |
Which of the following is currently used as a tyre cord?A. TeryleneB. Nylon-6C. BakeliteD. Polyethylene |
| Answer» Correct Answer - B | |
| 527. |
Which of the following is currently used as a true cord?A. BakeliteB. Nylon-6C. PolyethyleneD. Polypropylene |
| Answer» Correct Answer - B | |
| 528. |
The catalyst used in the manufacture of polyethene of Ziegler method is:A. titanium tetrachloride and trimethyl aluminiumB. titanium tetrachloride and triphenyl aluminiumC. titanium dioxideD. titanium isoperoxide |
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Answer» Correct Answer - A Ziegler Nata catalyst is `(TiCl_(4) + (CH_(3))_(3) Al)`. |
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| 529. |
The catalyst used in the manufacture of polyethene of Ziegler method is:A. titanium tetrachloride and triphenylaluminiumB. titanium tetrachloride and triethylaluminiumC. titanium dioxideD. titanium isopropoxide |
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Answer» Correct Answer - B Titanium tetrachloride and triethylaluminium. |
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| 530. |
Ziegler-Nana catalyst is used in the preparation of:A. high density polytheneB. low density polytheneC. dacronD. teflon |
| Answer» Correct Answer - A | |
| 531. |
Explain the term copolymersation and give two examples. |
| Answer» When two or more different monomers are allowed to polymerise together the product formed is called a copolymer, and the process in called copolymerisation. Example, Buna-S and Buna-N, Buna-S is a copolymer of 1,3-butadiene and styrene while Buna-N is a copolyer of 1,3-butadiene and acrylonitrile. | |
| 532. |
Which of the following is a synthetic polymer? (1) Starch (2) Silk (3) Protein (4) Polystyrene |
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Answer» Polystyrene is a synthetic polymer. |
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| 533. |
Define a copolymer. |
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Answer» The polymers made by addition polymerisation from two different monomers are termed as copolymers, e.g., Buna‐S, Buna‐N, etc. |
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| 534. |
Write one use of PVC. |
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Answer» In manufacture of rain coats& vinyl flooring. |
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| 535. |
Name the polymers that have the same empirical formulae as that of their monomers. |
| Answer» Correct Answer - Addition polymer | |
| 536. |
What is the other name of teflon? |
| Answer» Polytetrafluoroethylene (PTFE) | |
| 537. |
Identify the addition and condensation polymers from the following: polyester, polyacrylonitrile, nylon, polypropylene. |
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Answer» Addition polymer: polyacrylonitrile, polypropylene Condensation polymer: polyester, nylon |
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| 538. |
Which polymers occur naturally?A. Starch and NylonB. Starch and CelluloseC. Proteins and NylonD. Protein and PVC |
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Answer» Correct Answer - B |
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| 539. |
The monomer used to produce orlon is:A. `CH_(2)=CHF`B. `CH_(2)=C(Cl_(2))`C. `CH_(2)=CHCl`D. `CH_(2)=CHCN` |
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Answer» Correct Answer - D |
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| 540. |
Nylon is an example ofA. polysterB. polysaccharideC. polyamideD. Polythene |
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Answer» Correct Answer - C The general structure of any nylon polymer is `{:([--R-overset(O)overset(||)(C)-underset(H)underset(|)N-R--]_(n)),(" "overset(ubrace" ")("Amide linkage")):}` Because of the presence of amide linkage , nylon belongs to polyamides. |
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| 541. |
In the preparation of dextron one of the raw material is lactic acid another isA. glycolic acidB. valeric acidC. phthalic acidD. oxalic acid |
| Answer» Correct Answer - A | |
| 542. |
........A...... is used to make the cloth , which is used in the filtration of chemicals . Here A refers toA. Nylon , PVCB. PolyesterC. PolyamideD. None of these |
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Answer» Correct Answer - B Polyester is used to make the cloth for the filtration of chemicals. |
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| 543. |
Polyisobutylene is obtained byA. free radical polymerisationB. cationic polymerisationC. anionic polymerisationD. coordination polymerisation |
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Answer» Correct Answer - B Polyisobutylene is obtained by cationic polymerisation. |
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| 544. |
Which of the following has been used in the manufacture of non-inflammable photographic films?A. cellulose nitrateB. Cellulose xanthateC. Cellulose perchlorateD. Cellulose acetate |
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Answer» Correct Answer - D Cellulose acetate has been used in the manufacture of non-inflammable photographic films. |
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| 545. |
Which of the following is an animal fibre ?A. WoolB. LinenC. TeryleneD. Jute |
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Answer» Correct Answer - A Wool is obtained from animal . |
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| 546. |
Draw the structure of the monomers of (i) polyvinyl chloride (ii) Nylon -6 |
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Answer» (i) Polyvinyl chloride (PVC) : Vinyl chloride `(CH_(2) = CHCl)` (ii) Nylon 6 : `in`-aminocaporic acid `(NH_(2)(CH_(2))_(5)COOH)` |
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| 547. |
How are polymers classified on the basis of solution? |
Answer»
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| 548. |
What is the difference between Buna-S and Buna-N? |
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Answer» Both are copolymers basically Buna-N is a copolymer of 1,3- butadiene and acrylonitrile. Buna-S is a copolymer of 1,3- butadiene and styrene. |
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| 549. |
Which is a naturally occuring polymer ?A. PolytheneB. PVCC. Acetic acidD. Protein |
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Answer» Correct Answer - D Protein is an example of natural fibres . |
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| 550. |
Statement 1:Plexiglas is the commerical name of `PMMA` Statement 2:It is used in making contact lens.because it has an excellent lighr=transmission property.A. If both A and R are correct and R is the correct explanation of A.B. If both A and R are correct and R is not the correct explanation of A.C. If A is the correct but R is incorect.D. If A is the incorrect but R is corect. |
| Answer» Correct Answer - A | |