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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.
| 551. |
The simple molecules from which a polymer is made are calledA. MonomersB. MetamersC. RotamersD. Enantiomers |
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Answer» Correct Answer - A Definition |
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| 552. |
What is PMMA? Name its monomer. |
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Answer» PMMA is the name given to polymethyl methacrylate. Its monomer is methyl methacrylate. Structure : `{:(H_2C=,C-CH_3),(,"|"),(,CO_2CH_3):}` |
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| 553. |
What is copolymerisation (and give an example)? |
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Answer» When 2 or more different monomers are allowed to polymerise together, product is called copolymer and process is called copolymerisation. Ex: Buna-S: 1, 3 - butadiene and styrene. |
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| 554. |
Synthetic biopolymer , PHBV is made up to the following monomers ,A. 3-hydroxybutanoic acid +3-hydroxypentanoic acidB. 2-hydroxybutaoic acid +2-hydoxypropanoic acidC. 3-chlorobutanoic acid +3-chloropentanoic acidD. 2-chlorobutanoic acid +3-methylpentanoic acid. |
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Answer» Correct Answer - A `underset("3-Hydroxybutanoic acid")(nCH_(3)-overset(OH)overset(|)(CH)-CH_(2)COOH)+underset("3-Hydroxypentanoic acid")(nCH_(3)CH_(2)-overset(OH)overset(|)(CH)-CH_(2)COOH) to underset(PHBV)([--O-underset(CH_(3))underset(|)(CH)-CH_(2)-underset(O)underset(||)C-underset(CH_(2)CH_(3))underset(|)(CH)-CH_(2)-underset(O)underset(||)(C)--]_(n)` |
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| 555. |
How many types of monomers are present in synthetic rubber? |
| Answer» Correct Answer - 1 | |
| 556. |
The repeating unit present in nylon-6 is:A. `-[NH(CH_(2))_(6)NHCO(CH_(2))_(4)CO]-`B. `-[CO(CH_(2))_(6)NH]-`C. `-[CO(CH_(2))_(5)NH]-`D. `-[CO(CH_(2))_(4)NH]-` |
| Answer» Correct Answer - C | |
| 557. |
The repeating unit of nylon -6 isA. `(-CH_2)_3CONH-`B. `(-CH_2)_4CONH-`C. `(-CH_2)_5CONH-`D. `(-CH_2)_6CONH-` |
| Answer» Correct Answer - C | |
| 558. |
What is the number of atoms present in the backbone of each repeating unit of Nylon-6? |
| Answer» Correct Answer - 7 | |
| 559. |
Polypropylene is not used in :A. clothesB. ropesC. heat resistant plasticsD. parachute ropes |
| Answer» Correct Answer - C | |
| 560. |
Which type of biomolecules have some structural similarity with synthetic polyamides? What is this similarity? |
| Answer» Proteins. Polyamides and proteins both contain amide linkage. | |
| 561. |
Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation. |
| Answer» Urea formaldehyde resins. Monomer units are urea and formaldehyde. | |
| 562. |
Which type of biomolecules have some structural similarity with synthetic polyamides ? What is this similarity ? |
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Answer» Proteins have structural similarity with synthetic polyamides. Polyamides and proteins both contain amide linkage. |
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| 563. |
Identify the type of polymer.-A-A-A-A-A-A- |
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Answer» It is a homopolymer, as its repeating structural unit is derived from only one type of monomer units, i.e., A. |
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| 564. |
The monomer of polymer A. B. `CH_(3)CH = CHCH_(3)`C. `CH_(3)CH = CH_(2)`D. `(CH_(3))_(2) C = C (CH_(3))_(2)` |
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Answer» Correct Answer - A is the correct answer |
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| 565. |
Monomer while forming polymers undergoA. only additionB. only condensationC. only oxidationD. both a and b |
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Answer» Correct Answer - D N |
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| 566. |
Perlon - L is another name ofA. TeryleneB. Nylon - 66C. Nylon- 6D. Viscose rayon |
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Answer» Correct Answer - C Information . |
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| 567. |
Write the formula of monomer unit of polythene |
| Answer» Monomer unit of polythene is ethene `(CH_(2) = CH_(2))` | |
| 568. |
The condensation polymer among the following is:A. rubberB. proteinC. PVCD. polyethene |
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Answer» Correct Answer - B |
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| 569. |
Which one of the following statements is not true ?A. Buna-S is a copolymer of butadiene and styreneB. Natural rubber is a 1,4-polymer of isopyreneC. In vulcanization the formation of sulphur bridtes between different chains makes rubber harder and strongerD. Natural rubber has the trans-configuration at every double bond |
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Answer» Correct Answer - D |
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| 570. |
Bakelite is obtained from phenol by reaction with:A. `HCHO`B. `(CH_(2)OH)_(2)`C. `CH_(3)CHO`D. `CH_(3)COCH_(3)` |
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Answer» Correct Answer - A |
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| 571. |
Chain transfer reagent is:A. CCl(4)B. `CH_(4)`C. `O_(2)`D. `H_(2)` |
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Answer» Correct Answer - A |
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| 572. |
Which of the following is a thermosetting polymer?A. Urea-formaldehyde resinB. PolyvinylchlorideC. PolyesterD. Neoprene |
| Answer» Correct Answer - A | |
| 573. |
Cellulose acetate is aA. Natural polymerB. Semisynlthetic polymerC. Synthetic polymerD. Plasticizer |
| Answer» Correct Answer - B | |
| 574. |
Which is incorrect?A. Isoprene is the monomer of natural rubberB. Neoprene is monomeric unit of chloropreneC. Vulcanisation of rubber involves-S-S- cross- linking in natural rubberD. Neoprene rubber is resistant to aerial axidation |
| Answer» Correct Answer - B | |
| 575. |
In the reaction Reagent X isA. Triethyl aluminium and titanium tetrachlorideB. Triethyl aluminiumC. Zeigler Natta catalystD. Both (1)& (3) |
| Answer» Correct Answer - D | |
| 576. |
What do you mean by plasticizer ? Give an example. |
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Answer» The substances which give flexible polymers with improved activities, when mixed with virgin, rigid polymers are known as plasticiser. For instance, polyvinyl chloride (PVC) is a hard, rigid polymer. A plasticiser, dioctyl phthalate (DOP) is mixed with PVC to improve its commercial viability. Example: (1) Tricresyl phosphate is used in polystyrene. (2)Diisooctyl phthalate is used in PVC or polymethyl methacrylate. |
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| 577. |
Which of the following is a fiber : Nylon, Neoprene, PVC ? |
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Answer» Nylon is a fibre. |
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| 578. |
Biodegradable polymers are acted upon by ___ |
| Answer» Correct Answer - microorganisms | |
| 579. |
Which of the following is a fibre? Nylon, Neoprene, PVC. |
| Answer» Correct Answer - Nylon. | |
| 580. |
`F_(2)C = CF_(2)` is a monomer of:A. GlyptalB. TeflonC. OrlonD. Buna-s |
| Answer» Correct Answer - B | |
| 581. |
`F_(2)C = CF_(2)` is a monomer ofA. TeflonB. GlyptalC. Nylon-6D. Buna-S |
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Answer» Correct Answer - A `F_(2)C = CF_(2)` is monomer of teflon |
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| 582. |
`CF_(2) = CF_(2)` is a monomer ofA. GlyptalB. nylon-6C. teflonD. buna-S |
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Answer» Correct Answer - C Teflon is manufactured by heating tetafluoroethene with a free adical or persulphate catalyst at high pressure. `underset("Tetrafluoroethene")(nCF_(2)=CF_(2)) overset("Catalyst")underset("High pressure")rarr [underset("Teflon")(CF_(2)-CF_(2))]_(n)` |
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| 583. |
Which one of the following statements is wrong ?A. PVC stand for polyvinyl chloride .B. PTFE stands for teflon .C. PMMA stands for polymethyl methyl acrylate .D. Buna-S stands for natural rubber . |
| Answer» Correct Answer - D | |
| 584. |
Which one of the following statements is wrong ?A. PVC stand for polyvinyl chloride .B. PTFE stands for teflon .C. PMMA stands for polymethyl methyl acrylate . D. Buna-S stands for natural rubber . |
| Answer» Correct Answer - D | |
| 585. |
Which of the following polymer can be formed by using the following monomer units A. Nylon6, 6B. Nylon2-nylon-6C. Melamine polymerD. Nylon-6 |
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Answer» Correct Answer - D Nylon-6 can be formed from the given monomer which is caprolactum |
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| 586. |
Which of the following statements is not true about low density polythene?(i) Tough(ii) Hard(iii) Poor conductor of electricity(iv) Highly branched structure |
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Answer» (iii) Poor conductor of electricity |
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| 587. |
Which opf the following polymers are used as fibre?A. PolytetrafluoroethaneB. PolychloropreneC. NylongD. Terylene |
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Answer» Correct Answer - C::D Both Nylon and terylene are used as fibres |
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| 588. |
is a polymer having monomer units ____________. |
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Answer» The correct option is (i) |
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| 589. |
Which of the following are addition polymers?(i) Nylon(ii) Melamine formaldehyde resin(iii) Orlon(iv) Polystyrene |
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Answer» (iii), (iv) (iii) Orlon |
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| 590. |
Which of the following polymers, need atleast one diene monomer for their preparation ?A. dacronB. NovolacC. NeopreneD. Teflon |
| Answer» Correct Answer - C | |
| 591. |
Which of the following polymers, need atleast one diene monomer for their preparation?A. DacronB. Buna-SC. NeopreneD. Novolac |
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Answer» Correct Answer - B::C Both Buna-S and neoprene need atleast one diene monomer for their preparation |
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| 592. |
Match the column I with column II and mark the appropriate choice . A. `(A) to (ii),(B) to(iii),(C) to (iv),(D) to(i) `B. `(A) to (i),(B) to (ii),(C) to (iv),(D) to (iii)`C. `(A) to (iii),(B) to (iv),(C) to (i),(D) to (ii)`D. `(A) to (iv),(B) to (iii),(C) to (ii),(D) to (i)` |
| Answer» Correct Answer - D | |
| 593. |
Match the column I with column II and mark the appropriate choice. A. `(A) to (i),(B) to (ii),(C) to (iv),(D) to (iii)`B. `(A) to (iii),(B) to (iv),(C) to (ii),(D) to (i) `C. `(A) to (ii),(B) to (iii),(C) to (i),(D) to (iv)`D. `(A) to (iv),(B) to (i),(C) to (iii), (D) to (ii) ` |
| Answer» Correct Answer - B | |
| 594. |
Which of the following polmers can be formed by using the following monomer unit ? A. Nylon -6,6B. Nylon-2-nylon-6C. Melamine polymerD. Nylon-6 |
| Answer» Correct Answer - D | |
| 595. |
Match the column I with column II and mark the appropriate choice . A. `(A) to (iv) ,(B) to (iii),(C) to (i),(D) to (ii)`B. `(A) to (ii),(B) to (i),(C) to (iii),(D) to (iv)`C. `(A) to (iii),(B) to (ii),(C) to (iv),(D) to (i)`D. `(A) to(i),(B) to (iv),(C) to (ii),(D) to (iii)` |
| Answer» Correct Answer - C | |
| 596. |
Which of the following polymer can be formed by using the following monomer unit?(i) Nylon 6, 6(ii) Nylon 2–nylon 6(iii) Melamine polymer(iv) Nylon-6 |
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Answer» (iv) Nylon-6 |
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| 597. |
Which of the following polymers are used as fibre?(i) Polytetrafluoroethane(ii) Polychloroprene(iii) Nylon(iv) Terylene |
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Answer» (iii), (iv) (iii) Nylon |
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| 598. |
Which of the following are thermoplastic polmers ?A. Polythene , urea-formaldehyde , polyvinylsB. Bakelite , polythene, polystyreneC. Polythene, polystyrene, polyvinylsD. Urea-formaldehyde, polystyrene, bakelite |
| Answer» Correct Answer - C | |
| 599. |
Match the column I with column II and mark the appropriate choice . A. `(A) to (ii) (B) to (iii) , (C) to (iv),(D) to (i)`B. `(A) to (i),(B) to (ii),(C) to (iv),(D) to (iii)`C. `(A) to(iii),(B) to (iv),(C) to (i),(D) to (ii)`D. `(A) to(iv),(B) to (i),(C) to (iii),(D) to (ii)` |
| Answer» Correct Answer - A | |
| 600. |
Which of the following polymers, need atleast one diene monomer for their preparation?(i) Dacron(ii) Buna-S(iii) Neoprene(iv) Novolac |
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Answer» (ii), (iii) (ii) Buna-S |
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