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.
| 101. |
What is the role of benzoyl peroxide in the polymerisation of ethene ? |
| Answer» Benzoyl peroxide provides benzoyl free radicals `(C_(6)H_(5)CO)` which initiate and promote free radical polymerisation process. | |
| 102. |
Give one example of elastromer |
| Answer» Natural rubber or Buna-S is an elastromer | |
| 103. |
Which of the following sets contains only addition polymers?A. Polythylene , polypropylene , teryleneB. Polyethlene , PVC, acrilanC. Buna-S, nylon , polybutadieneD. Bakelite , PVC, polyethylene |
| Answer» Correct Answer - B | |
| 104. |
Addition polymers are those in which monomers are converting into polymer by addltlon reaction. This addition reaction follow Tedical.mechanism in which firstly radical form than this propagate a chain than this chain terminate to form polymer Which of the following is a propagation rejection?A. `dotR+CH_(2)=CH_(2)toR-CH_(2)-dotCH_(2)`B. `RCH_(2)CH_(2)+CH_(2)=CH_(2)toR-CH_(2)-CH_(2)-CH_(2)-dotCH_(2)`C. `(RCH_(2)CH_(2)CH_(2)dotCH_(2))_(n)toR(CH_(2)CH_(2))_(2n)R`D. None of these |
| Answer» Correct Answer - B | |
| 105. |
Addition polymers are those in which monomers are converting into polymer by addltlon reaction. This addition reaction follow Tedical.mechanism in which firstly radical form than this propagate a chain than this chain terminate to form polymer The polyethene is started asA. `R-CH_(2)-dotCH_(2)`B. `R-CH=dotCH`C. `CH_(2)=dotCH`D. `R-CH-dotCH` |
| Answer» Correct Answer - A | |
| 106. |
Nucleic acid is a condensation polymer ofA. Simple sugarsB. Amino acidsC. NucleotidesD. Styrene |
| Answer» Correct Answer - C | |
| 107. |
What are biopolymers? Give two examples. |
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Answer» Naturally occurring polymers that control various life processes in plants and animals are called bio polymers. e.g. proteins, nucleic acid. |
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| 108. |
Examples of addition polymers areA. KevlarB. Nylon 66C. Natural rubberD. Teflon |
| Answer» Correct Answer - C::D | |
| 109. |
Which of the following are Biopolymers?A. ProteinsB. PolystyreneC. DNAD. Glucose |
| Answer» Correct Answer - A::C | |
| 110. |
Amongst the following, the total number of biodegradable polymers are: Nylon-6, 6, PHBV, cellulose, PVC, glyptal, dextron, nylon-2-nylon 6, PAN. |
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Answer» Correct Answer - D |
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| 111. |
How many among the following are biodegradable polymers? (i) Polyhydroxybutyrate (PHB) (ii) PHBV (iii) SBR (iv) Polyglycolic acid (v) Bakelite (vi) Thiokol (vii) Nylon-2-Nylon-6 (vii) PMMA (ix) Nylon-6, 6. |
| Answer» Correct Answer - 4 | |
| 112. |
Write chemical equation to prepare (i) Nylon-6 (ii) Nylon-66 |
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Answer» Nylon 66 from Adipic acid and hexa methylene diamine Nylon 66 from Adipic acid and hexa methylene diamine Nylon 6 from Caprolactum |
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| 113. |
Name some biopolymers which are biodegradable. |
| Answer» Polysaccharides (Strach, Cellulose), Proteins, Peptides and Nucleic acid etc. | |
| 114. |
Which of the following monomers form biodegradable polymers?(i) 3-hydroxybutanoic acid + 3-hydroxypentanoic acid(ii) Glycine + amino caproic acid(iii) Ethylene glycol + phthalic acid(iv) Caprolactum |
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Answer» (i), (ii) (i) 3-hydroxybutanoic acid + 3-hydroxypentanoic acid |
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| 115. |
Name the monomers of nylon-2-nylon-6 |
| Answer» Monomers of nylon -2-nylon-6 : gylcine `(NH_(2)CH_(2)COOH)` and aminocaporic acid `(NH_(2) - (CH_(2))_(5) - COOH)`. It is biodegradable polymer. | |
| 116. |
Write the name and structures of the monomers of the following biodegradable polymers : (i) Nylon 2-nylon 6 (ii) PHBV (iii) PHB |
|
Answer» (i) Glycine `(NH_(2)-CH_(2)COOH)` & amino caproic acid `[H_(2)N(CH_(2))_(5)COOH]` (ii) 3-Hydroxybutanoic acid - `(CH_(3)-underset(OH)underset(|)(CH)-CH_(2)-COOH)` and 3-Hydroxypentanoic acid - `(CH_(3)-CH_(2)-underset(OH)underset(|)(CH)-CH_(2)-COOH)` (iii) 3-Hydroxybutanoic acid `(CH_(3)-underset(OH)underset(|)(CH)-CH_(2)-COOH)` |
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| 117. |
Write the names and chemical formulae of the monomers for the following polymers. nylon 6,10 |
| Answer» `H_2N-(CH_2)_6-NH_2` (Hexamethylene diamine ) + HOOC -`(CH_2)_B`-COOH (Sebasic acid ) | |
| 118. |
The monomers of biodegradable polymer , nylon 2-nylon 6 areA. glycine + adipic acidB. glycol +phthalic acidC. phenol + ureaD. glycine + amino caproic acid . |
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Answer» Correct Answer - D It is a copolymer of glycine `(H_(2)N-CH_(2)-COOH)` and amino caproic acid `[H_(2)N(CH_(2))_(5)COOH]`. |
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| 119. |
Which of the following monomers form biodegradable polymers?A. 3-hydroxybutanonic acid + 3-hydroxypentanoic acidB. Glycine + amino caporic acidC. Ethylene glyco + phthalic acidD. Caprolactum |
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Answer» Correct Answer - A::B Both are monomer units of biodegradable polymers |
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| 120. |
___ and ____ are the monomers of nylon 6,6. |
| Answer» Hexamethylene diamine and adipic acid | |
| 121. |
Which of the following monomers form biodegradable polymersA. 3-hydroxybutanoic acid+ 3-hydroxypentanoic acidB. glycine + amino caproic acidC. ethylene glycol + phthalic acidD. caprolactam |
| Answer» Correct Answer - A::B | |
| 122. |
Nylon 2 - nylon 6 is a biodegradable polymer. The monomers of these polymers areA. glycineB. caprolactamC. aminocaproic acidD. adipic acid |
| Answer» Correct Answer - A::C | |
| 123. |
Monomers of nylon 2-nylon 6 are-A. glycine and aminocaproic acidB. glycine and caproic acidC. hexamethylenediamine and adipic acidD. alanine and aminocaproic acid |
| Answer» Correct Answer - A | |
| 124. |
Name the monomers of nylon-2-nylon-6A. Glycine and glycerolB. Glycine and amino caproic acidC. Glycine and caprolactumD. Hexamethylene diamine and adipic acid |
| Answer» Correct Answer - B | |
| 125. |
Which compound polymerisation to neoprene ?A. `CH_(2)=CHCl `B. `CH_(2)=C*CH-CH=CH_(2)`C. `Cl_(2)C=C*Cl_(2)`D. `F_(2)C=CF_(2)` |
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Answer» Correct Answer - B Neoprene is a synthetic rubber. It is prepared by polymerisation of 2-chlorobuta-1, 3-diene . `underset("Chloroprene")(nCH_(2)=underset(Cl)underset(|)(C)-CH) overset("Polymerisation")to underset("Neoprene")([--CH_(2)-underset(Cl)underset(|)(C)=CH-CH_(2)--]_(n)` |
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| 126. |
The monomers used for the synthesis of nylon-2-nylon-6 are :A. caprolactumB. alanine and amino caproic acidC. glycine and amino caproic acidD. hexamethylenediamine and adipic acid |
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Answer» Correct Answer - C Nylon 2-nylon-6 is an alternating polyamide copolymer of glycine and amino caproic acid . It is a biodegradable polymer . `H_(2)N-CH_(2)-COOH`: glycine `H_(2)N(CH_(2))_(5)COOH`: amino caproic acid |
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| 127. |
The monomers used for the synthesis of nylon-2-nylon-6 are :A. caprolactumB. alanine and amino caporic acidC. glycine are amino caporic acidD. hexamthylene diamine and adipic acid |
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Answer» Correct Answer - C Glycine and amino caporic acid are the monomer units of nylo-2-nylon-6 |
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| 128. |
Which purine and pyrimidine bases are present in `DNA` and `RNA`?A. guanineB. thymineC. cytosineD. uracil |
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Answer» Correct Answer - D The purine base present in RNA is uracil |
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| 129. |
Identify the polymer given below : |
| Answer» Polyisoprene/Natural rubber | |
| 130. |
Explain the difference between natural rubber and synthetic rubber . |
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Answer» Natural rubber : The rubber which is obtained form natural sources such as plants and animals rubber called natural rubber .E.g : Starch, cellulose , rubber etc. Synthetic rubber : The rubber which are artificially prepared .i.e man -made are called synthetic rubbers. These have wide applications in daily life as well as in industry . |
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| 131. |
Identify the type of polymer given in the following figure. |
| Answer» Cross-linked polymer | |
| 132. |
What is natural rubber ? How does it exhibit elastic properties ? |
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Answer» 1) Natural rubber is a polymer and possesses elastic properties . 2) It is an elastomer and it is manufactured form rubber latex . Latex is a colloidal dispersion of rubber in water . 3) Natural rubber may be considered as a linear polymer of isoprene. It is also called as cis -1 ,4 -Poly isoprene. 4) The cis poly isoprene molecule consists of various chain held together by weak vander waals interactions and has a colloid structure. Thus it structures like a spring and exhibits elastic properties . |
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| 133. |
Which of the following compounds can make clothes fire proof?A. `MgSO_(4)`B. `Al(SO_(4))_(3)`C. `FeSO_(4)`D. `Cu_(2)Cl_(2)` |
| Answer» Correct Answer - B | |
| 134. |
Which of the following is used to make bullet proof windows ?A. NomexB. LexanC. GlyptalD. Pan |
| Answer» Correct Answer - B | |
| 135. |
Generally molecular mass of a polymer is overA. 100B. 500C. 1000D. 10000 |
| Answer» Correct Answer - D | |
| 136. |
Out of chain growth polymerisation and step growth polymerisation, in which type will you place the following. |
| Answer» Chain growth polymerisation. | |
| 137. |
Which of the following is not a biopolymer?A. StarchB. RubberC. ProteinsD. Nucleic acids |
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Answer» Correct Answer - B |
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| 138. |
Which pair of monomers is useful for the preparation of Dacron ?A. Adipic acid and ethylene glycolB. Hexamethylene diamine and adipic acidC. Hexamethylene diamine and terephthalic acidD. Dimethyl terephthalate and ethylene glycol |
| Answer» Correct Answer - D | |
| 139. |
Fire fighter uses clohts ofA. LexanB. NylonC. TeryleneD. Nomex |
| Answer» Correct Answer - D | |
| 140. |
which of the following has rubber like properties ?A. FibresB. Thermosetting polymersC. Thermoplastic polymersD. elastomers |
| Answer» Correct Answer - D | |
| 141. |
Final by- product during preparation of Dacron fibre isA. glycerolB. ethylene glycolC. ethyl alcoholD. propylene glycol |
| Answer» Correct Answer - B | |
| 142. |
Which polymer is generally used in carry bags?A. PolyesterB. BakeliteC. PolyethyleneD. Alkyd resin |
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Answer» Correct Answer - D |
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| 143. |
Chain growth polymerisation is important reaction for ?A. PTFEB. Nylon-26C. polyesterD. Bakelite |
| Answer» Correct Answer - A | |
| 144. |
Side product during the preparation of dacron fibre isA. glycerolB. ethylene glycolC. ethyl alcoholD. propylene glycol |
| Answer» Correct Answer - B | |
| 145. |
Orlon has monomeric unit:A. isopreneB. acroleinC. glycolD. vinylcyanide |
| Answer» Correct Answer - D | |
| 146. |
The polymer obtained from condensation polymerisation of sebacic acid and hexamethylenediamine is called:A. tereleneB. nylon-6C. nylon-610D. dacron |
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Answer» Correct Answer - C |
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| 147. |
Polymerisation of chloroethylene gives rise to the polymerA. PolyetheneB. PVCC. TeflonD. Nylon |
| Answer» Correct Answer - B | |
| 148. |
The compound that inhibits the growth of polymer chain during vinyl polymerisation , isA. carbon tetrachlorideB. p-benzoquinoneC. benzophenoneD. carbon dioxide |
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Answer» Correct Answer - B Certain amines , phenols and quinones are used to inhibit the growth of polymer chain , i.e., p-benzoquinone |
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| 149. |
Polymer obtained by condensation polymerisation isA. polytheneB. teflonC. phenol-formaldehydeD. nitrile rubber |
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Answer» Correct Answer - C Phenol -formaldehyde polymer is obtained by condensation polymerisation. |
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| 150. |
Dacron is an example of:A. polyamideB. polypropyleneC. polyurethaneD. polyester |
| Answer» Correct Answer - D | |