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.
| 51. |
Plexiglass (PMMA) is a polymer ofA. Acrylic acidB. Methyl acrylateC. MethylmethacrylateD. None of these |
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Answer» Correct Answer - C `underset("Methylmethacrylate") (n CH_(2) = underset(CH_(3)) underset(|)(C) - COOCH_(3) overset("Polymeri")underset("sation")(to) underset(PMMA)([CH_(2) - underset(COOHCH_(3))underset(|)overset(CH_(3))overset(|)(C)]_(n))` |
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| 52. |
Strong intermolecular force of attraction like H -bonding is present in the polymer-A. natural rubberB. teflonC. nylon-6,6D. polystyrene |
| Answer» Correct Answer - C | |
| 53. |
Which one is classified as a condensation polymer ?A. DacronB. NeopreneC. TeflonD. Acrylonitrile |
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Answer» Correct Answer - A |
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| 54. |
The polymer containing strong intermolecular forces, e.g., hydrogen bonding is:A. natural rubberB. teflonC. nylon-6,6D. Polystyrene |
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Answer» Correct Answer - C |
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| 55. |
Assertion : Bakelite is a thermosetting polymer. Reason : Bakelite is formed by cross- linking of novolac and formaldehyde .A. If both assertion and reason are true and reason is the correct explanation of assertion .B. If both assertion and reason are true but reason is not the correct explanation of assertion .C. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - A | |
| 56. |
(A)Bakelite is co-polymer. (R ) Bakelite is a thermosetting material.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 - B | |
| 57. |
Why is bakelite known as a thermosetting polymer ? |
| Answer» Bakelite does not melt on heating and does not get back to its original state on cooling due to extensive cross linking within the polymer. Hence, bakelite is known as a thermosetting polymer. | |
| 58. |
What is bakelite?What is its use? Why bakelite is said to be an example for thermo setting polymer? |
Answer»
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| 59. |
Which one of the following is an example of a biode gradable polyester(a) PHBV(b) PET(c) Nylon(d) Bakelite |
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Answer» PHBV is an example of a biode gradable polyester. |
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| 60. |
Which of the following represents chloroprene , the monmer of neoprene ?A. `CH_(2)=CH-CH=CH_(2)Cl`B. `CH_(2)=underset(CH_(3))underset(|)(C)-CH=CHCl`C. `CH_(2)=underset(Cl)underset(|)(C)-CH=CH_(2)`D. `CH_(2)=underset(CH_(3))underset(|)(C)-underset(Cl)underset(|)(C)=CH_(2)` |
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Answer» Correct Answer - C `underset("Chloroprene")(nCH_(2)=underset(Cl)underset(|)C-CH=CH_(2)) overset("Polymerisation")(to) underset("Neoprene")([--CH_(2)-C=CH-CH_(2)--]_(n))` |
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| 61. |
Bakelite is obtained from phenol by reacting with(a) Vinyl chloride(b) Ethylene glycol(c) Ethanal(d) Methanal |
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Answer» Bakelite is obtained from phenol by reacting with Methanal |
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| 62. |
Say TRUE or FALSE :Chloroprene is an addition polymer of Neoprene. |
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Answer» False Chloroprene is an addition polymer of Neoprene. |
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| 63. |
Polymerization of chloroprene is catalyzed byA. `N_2` catalystB. peroxide catalystC. `H_2`+Ni catalystD. Lindlar catalyst |
| Answer» Correct Answer - B | |
| 64. |
Polymer of chloroprene isA. IsopreneB. NeopreneC. BothD. None |
| Answer» Correct Answer - B | |
| 65. |
Natural rubber is prepared from ?A. PropeneB. Trans isopreneC. EtheneD. Cis isoprene |
| Answer» Correct Answer - D | |
| 66. |
The rubber prepared by the copolymerisation of butadiene and acrylonitrile is known as ___ |
| Answer» Correct Answer - Buna-N | |
| 67. |
Write notes on1. Linear polymer2. Branched polymer3. Cross linked polymer |
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Answer» 1. Here small monomer units are arranged one behind the other so as to form a chain. 2. Small monomer units combine together in such a way that branched arrangement is possible in the polymer. 3. A rigid arrangement is possible when different monomer units are connected by cross linking. |
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| 68. |
Natural rubber is prepared from ?A. All trans polyisopreneB. All cis- polyisopreneC. chloropreneD. Buna-N |
| Answer» Correct Answer - B | |
| 69. |
Chloroprene is the repeating unit in:A. PolystyreneB. Buna -sC. Buna-ND. neoprene |
| Answer» Correct Answer - D | |
| 70. |
Assertion : 1, 3-Butadiene is the monomer of natural rubber Reason : In natural rubber, the monomers are linked by cationic polymerisationA. If both assertion and reason are correct and reason is correct explanation for assertionB. If both assertion and reason are correct but reason is not correct explanation for assertionC. If assertion is correct but reason is incorrectD. If assertion and reason are both incorrect |
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Answer» Correct Answer - D Correct assertion. Isoprene is a monomer of natural rubber. Correct reason : In natural rubber, the monomers are linked by free radical addition polymerisation |
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| 71. |
Assertion : Nylon-6, 6 is a copolymer Reason : In Nylon-6, 6 the monomer molecules are linked through their functional groupsA. If both assertion and reason are correct and reason is correct explanation for assertionB. If both assertion and reason are correct but reason is not correct explanation for assertionC. If assertion is correct but reason is incorrectD. If assertion and reason are both incorrect |
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Answer» Correct Answer - C Correct reason. In Nylon-6, 6 the monomer units are different |
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| 72. |
which of the following is branched polymer ?A. NylonB. low density polyethyleneC. high density polyetheneD. polyester |
| Answer» Correct Answer - B | |
| 73. |
Which of the following is an example of branched chain polymer ?A. PVCB. PolyesterC. Low density poltheneD. Nylon-66 |
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Answer» Correct Answer - C Low density polythene is an example of branched chain polymer . |
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| 74. |
Which of the following is a condensation polymer ?A. `[NH-overset(O)overset(||)(C)-(CH_(2))_(5)--]_(n)`B. RubberC. Polyvinyl chlorideD. Polyethylene |
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Answer» Correct Answer - A Condensation polymers are those in which monomer units condense to form large units along with loss of small molecules like `H_(2)O,NH_(3)`. `[--HN-overset(O)overset(||)(C)-(CH_(2))_(5)--]_(n)` is an amide linkage , formed by the condensation of -COOH group with `-NH_(2)` group . Which is accompanied by loss of water . So ,it is condensation polymer . |
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| 75. |
Which one of the following statements is wrong?A. PVC stands for polyvinyl chlorideB. PTFE stands for teflonC. PMMA stands for polymethyl methyl acrylateD. Buna-S stands for natural rubber |
| Answer» Correct Answer - D | |
| 76. |
Which of the following fibres are made of polyamides?A. DacronB. OrlonC. NylonD. Rayon |
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Answer» Correct Answer - C Nylon is a polyamide . |
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| 77. |
Hairs are the natural fibres ofA. polyesterB. CelluloseC. ProteinsD. oils and fats |
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Answer» Correct Answer - C Hair contain protein . |
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| 78. |
Nylon is:A. polyester fibreB. polyamide fibreC. polythene derivativeD. polyethylene methyl acrylate fibre |
| Answer» Correct Answer - B | |
| 79. |
The main constituent of most of the natural fibres isA. glycogenB. starchC. celluloseD. polythene |
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Answer» Correct Answer - C Cellulose is main constituent of natural fibres . |
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| 80. |
What is the main constituent of bubble gum? |
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Answer» Styrene ‐ butadiene copolymer (SBR). |
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| 81. |
Which of the following polymers are synthetic, semisynthetic and natural polymers? Cellulose acetate, terylene, starch |
| Answer» Synthetic : terylene, Semi-synthetic : cellulose acetate, Natural : starch | |
| 82. |
Synthetic fibres are prepared fromA. Chemical compounds by the process of polymerizationB. CelluloseC. proteinD. wool |
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Answer» Correct Answer - A Definition |
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| 83. |
Which of the following fibres is not made up of polyamides?A. Artificial silkB. Natural silkC. WoolD. Nylon |
| Answer» Correct Answer - A | |
| 84. |
Assertion (A): Polyamides are best used as fibres because of high tensile strength. Reason (R) : Strong intermolecular forces (like hydrogen bonding within polyamides) lead to close packing of chains and increase the crystalline character, hence, provide high tensile strength to polymers.A. (A) and (R ) both are correct statement but reason does not explain (A)B. (A) and (R ) both are correct statements and (R ) explains the (A)C. Both (A) and (R ) are wrong statementD. (A) is correct statement and (R ) is wrong statement |
| Answer» Correct Answer - B | |
| 85. |
Synthetic fibres manufactured from cellulose are termed as:A. rayonB. nylonC. dacronD. artificial silk |
| Answer» Correct Answer - A::D | |
| 86. |
The main constituent of most natural fibres isA. glycogenB. starchC. celluloseD. all of these |
| Answer» Correct Answer - C | |
| 87. |
Plant fibres areA. protein fibresB. cellulose fibresC. protein fibresD. none of these |
| Answer» Correct Answer - B | |
| 88. |
Which one of the following is a true synthetic fibre ?A. Nylon-6B. TeryleneC. nylon-66D. all of these |
| Answer» Correct Answer - D | |
| 89. |
In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. (i) Assertion and reason both are correct statement but reason does not explain assertion. (ii) Assertion and reason both are correct statements and reason explains the assertion. (iii) Both assertion and reason are wrong statement. (iv) Assertion is correct statement and reason is wrong statement. (v) Assertion is wrong statement and reason is correct statement.Assertion : Rayon is a semi synthetic polymer and is taken as a better choice than cotton fabric.Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation. |
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Answer» (ii) Assertion and reason both are correct statements and reason explains the assertion. |
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| 90. |
Terylene is used for making_______.A. seat beltsB. sailsC. fabricsD. all of these |
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Answer» Correct Answer - D Uses of terylene |
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| 91. |
Assertion (A) Rayon is a semisynthetic polymer and is taken as a better choice than cotton fabric. Reason (R ) Mechanical and aesthetic properties of cellulose can be improved by Acetylation |
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Answer» Correct Answer - B Reason is the correct explanation for assertion |
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| 92. |
Cotton isA. cellulose fibreB. polyamide fibreC. polyester fibreD. none of these |
| Answer» Correct Answer - A | |
| 93. |
Assertion (A) Rayon is a semisynthetic polymer and is taken as a better choice than cotton fabric. Reason (R ) Mechanical and aesthetic properties of cellulose can be improved by AcetylationA. If both assertion and reason are true and reason is the correct explanation of assertion .B. If both assertion and reason are true but reason is not the correct explanation of assertion .C. If assertion is true but reason is false.D. If both assertion and reason are false. |
| Answer» Correct Answer - A | |
| 94. |
which of the following is used to make tooth brush bristiles ?A. Viscose rayonB. Acetate rayonC. Nylon -6D. Terylene |
| Answer» Correct Answer - C | |
| 95. |
A polymer that gives strong fibres and used as blend with cotton in clothing isA. TeflonB. nylonC. fabricsD. terylene |
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Answer» Correct Answer - D Uses of terylene |
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| 96. |
Cotton isA. Natural cellulose fibreB. Natural protein fibresC. polyamideD. Regenerated fibre |
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Answer» Correct Answer - A Definition |
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| 97. |
Which of the following is used to prepare tooth brush bristles?A. Viscose rayonB. Acetic rayonC. Nylon-6D. Terylene |
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Answer» Correct Answer - C Uses of Nylon . |
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| 98. |
HDPE,PVC, nylons are the example ofA. linear polymersB. branched chain polymersC. cross-linked polymersD. natural polymers |
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Answer» Correct Answer - A HDPE , PVC , nylons are the examples of linear polymers. |
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| 99. |
Define the term polyesters? How is it manufactured? |
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Answer» Polyesters are the condensation products of dicarboxylic acids and diols. e.g. Dacron or Terylene. It is manufactured by heating a mixture of ethylene glycol and terephthalic acid at 420 to 460 K in the presence of zinc acetate-antimony trioxide catalyst. |
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| 100. |
Formation of nylons and polyesters are called step growth polymerisation becauseA. the polymers are formed by adding a monomer step by stepB. the polymers are formed by condensation and monomers are joined by loss of simple molecules like waterC. the monomers used for condensation are unsaturated moleculesD. the polymers are formed by addition of a large number of free readicals formed by monomers . |
| Answer» Correct Answer - B | |