InterviewSolution
Saved Bookmarks
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.
| 901. |
Write the names of structures of the monomers of the following polymers : Decron |
|
Answer» Dacron: terephthalic acid and ethylene glycol `underset"terephthalic acid"(HOOC-Ph-COOH)" " underset"ethylene glycol"(OH-CH_2-CH_2-OH)` |
|
| 902. |
Write the names of structures of the monomers of the following polymers : Buna-N |
|
Answer» Buna-N :acrylonitrile and butadiene `underset"acrylonitrile"(H_2C=CH-CN) " " underset"butadiene"(H_2C=CH-CH=CH_2)` |
|
| 903. |
Write the names of monomers of the following polymers. (i) `"["--overset(H)overset(|)N(CH_(2))_(6)-overset(H)overset(|)N-overset(O)overset(||)C-(CH_(2))_(4)-overset(O)overset(||)C-"]"_(n)` (ii) `"["--overset(O)overset(||)C-(CH_(2))_(5)-overset(H)overset(|)N-"]"_(n)`(iii)`[--CF_(2)-CF_(2)--]_(n)` |
|
Answer» i) Hexamethylene diamine and adipic acid ii)Caprolactam iii) Tetrafluoroethene. |
|
| 904. |
Classify the following into additin and condensation polyners i) Terylene ii) Bakelite iii)Polyvinyl chloride iv) Polythene |
| Answer» Addition polymer: Polyvinyl chloridek polythene, Condensation polymers : Terylene, Bakelite . | |
| 905. |
Which of the following is not synthetic rubber ?A. Poly 1,3-butadiene acrylonitrileB. poly 1,3 butadiene styreneC. Butyl rubberD. Polyisoprene |
| Answer» Correct Answer - D | |
| 906. |
Polymers are made up of small molecules called monomers. Polymers which are formed by one type of monomer called homopolymers and which are formed by more than one type of monomers are called co-polymers. Natural polymers are biodegradable whereas systhetic polymers may or may not be. Addition or chain growth polymerization involves the repeated addition of monomers to the polymer chain. The monomers are unsaturated compounds and this type of polymerization takes placed by ionic (cationic or anionic) as well as free radical a series of condensation reactions between the monomers. Each monomer normally contains two functional groups. Branch chain polymers may be condensation polymers or addition but cross linked polymers are always condensation polymers. Which one of the following polymers is prepared by condensation polumerization ?A. TeryleneB. TeflonC. StyreneD. Rubber |
|
Answer» Correct Answer - A Terylene is prepared by condensation polymerisation |
|
| 907. |
Polymers are made up of small molecules called monomers. Polymers which are formed by one type of monomer called homopolymers and which are formed by more than one type of monomers are called co-polymers. Natural polymers are biodegradable whereas systhetic polymers may or may not be. Addition or chain growth polymerization involves the repeated addition of monomers to the polymer chain. The monomers are unsaturated compounds and this type of polymerization takes placed by ionic (cationic or anionic) as well as free radical a series of condensation reactions between the monomers. Each monomer normally contains two functional groups. Branch chain polymers may be condensation polymers or addition but cross linked polymers are always condensation polymers. Which of the following is a chain growth polymer ?A. PolystyreneB. PTFEC. PolybutadieneD. All of these |
|
Answer» Correct Answer - D All are addition polymers and are formed by chain growth process |
|
| 908. |
Polymers are made up of small molecules called monomers. Polymers which are formed by one type of monomer called homopolymers and which are formed by more than one type of monomers are called co-polymers. Natural polymers are biodegradable whereas systhetic polymers may or may not be. Addition or chain growth polymerization involves the repeated addition of monomers to the polymer chain. The monomers are unsaturated compounds and this type of polymerization takes placed by ionic (cationic or anionic) as well as free radical a series of condensation reactions between the monomers. Each monomer normally contains two functional groups. Branch chain polymers may be condensation polymers or addition but cross linked polymers are always condensation polymers. Which one of the following is biogegradable polymer ?A. Nylon -66B. GlyptalC. CelluloseD. PVC |
|
Answer» Correct Answer - C Cellulose is a biodegradable polymer |
|
| 909. |
Arrange the following polymers in increasing order of their intermolecular forces : (i) Buna-S, Nylon-6,6 ,Polythene (ii) Neoprene, PVC, Nylon-6 |
|
Answer» The increasing intermolecular forces of attraction follows the order : Elastomer `lt` Plastic `lt` Fibre (ii) Buna-N `lt` Polystyrene `lt` Dacron |
|
| 910. |
Arrange the following polymers in increasing order of their intermolecules forces. Nylon ,6,6 Buna -S ,Polythene . Nylon 6,Neoprene , Polyvinyl choleride . |
|
Answer» In order of increasing intermolecular forces, Buna -S ,Polythene , Nylon 6,6 . Neoprene ,Polyvinyl chorede. Nylon 6 . |
|
| 911. |
Arrange the polymers in order of their increasing intermolecular forces: (1). Nylon 6, 6, Buna-S, polyethylene, (2). Nylon 6, neoprene, polyvinyl chloride |
| Answer» Buna-S and neoprene are elastomers. On the other hand, polyethylene, polyvinyl chloride, nylon 6 and nylon 6, 6 are thermoplastic polymers. Intermolecular forces of attraction in elastomer are weaker than those in thermoplastic polymers. Nylon 6 and nylon 6, 6 are polar in nature. Molecular chains in these two polymers are held by hydrogen bondings. Because of this, intermolecular forces of attraction in nylon 6 or nylon 6, 6 are stronger than those in polyethylene or polyvinyl chloride. Therefore, in case of (1), the order will be: Buna-S lt polyethylene lt nylon 6, 6 and in case of (2), it will be neoprene lt polyvinyl chloride lt nylon 6. | |
| 912. |
Arrange the following polymers in increasing order of their intermolecular forces: (1) Nylon 6,6, Buna-S, Polythene. (2) Nylon 6, Neoprene, Polyvinyl chloride.A. `A lt B lt C `B. `B lt C lt A `C. `B gt A gt C `D. `C lt A lt B ` |
|
Answer» Correct Answer - B Nylon -66 is a fibre , thus has strong intermolecular forces like H-bonding . Buna-S ia an elastomer , thus has weakest intermolecular forces . Polythene is a thermoplastic polymer , thus the intermolecular forces present in polyethene are in between elastomers as fibres. Thus , the order of intermolecular forces is `B lt C lt A ` . |
|
| 913. |
Arrange the following polymers in increasing order of their molecular forces. Nylon 6,6 Buna -S ,polytheneii)Nylon 6, Neoprene, polyvinyl chloride |
|
Answer» i) Increasing order of inter molecular forces of given polymers is Buna-S `lt`polythene `lt`Nylon-6,6 Increasing order of inter molecular forces of given polymers is Neoprene `lt` polyvinyl chloride`lt`Nylon-6. |
|
| 914. |
STATEMENT-1: Nylon-6 is a step-growth polymer. and STATEMENT-2 It is obtained from caprolactum.A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1C. Statement-1 is True, Statement-2 is FalseD. Statement-1 is False, Statement-2 is True |
| Answer» Correct Answer - B | |
| 915. |
Which of the following is not a synthetic rubber ?A. NeopreneB. SBRC. ThiokolD. Orlon |
| Answer» Correct Answer - D | |
| 916. |
Given th polymers, `A =` Nylon-6,6, `B=` Buna-`S`, `C =` Polythene Arrange these in decreasing order of their intermolecular forces:A. `AgtBgtC`B. `BgtCgtA`C. `CltAltB`D. `BltCltA` |
| Answer» Correct Answer - D | |
| 917. |
How does the presence of double bonds in rubber molecules influence their structure and reactivity? |
|
Answer» From the structural point of view, the natural rubber is a linear cis-1, 4-poly isoprene. In this polymer, the double bonds are located between C2 and C3 of isoprene units. This cisconfiguration about double bonds do not allow the chains to come closer for effective attraction due to weak inter molecular attractions. Hence, the natural rubber has a coiled structure and shows elasticity. |
|
| 918. |
Arrange the following polymers in increasing order of their intermolecular forces: (1) Nylon 6,6, Buna-S, Polythene. (2) Nylon 6, Neoprene, Polyvinyl chloride. |
|
Answer» (1)Buna-S lt Polythene lt Nylon 6,6. This represents the order of intermolecular forces. Elastomer lt plastic lt fiber. (2) Neoprene lt Polyvinyl chloride lt Nylon 6. This also represents the same order of intermolecular forces. Elastomer lt plastic lt fiber |
|
| 919. |
In a science exhibition, one student mixed two transparent liquids in a beaker and got a sticky material from the interface of two liquids and he claims that the material formed is nylon 6,6. 1. Name the two liquids he mixed. 2. Name the monomer of nylon 6. 3. Suggest two uses of nylon 6, 6. |
|
Answer» 1. Hexamethylene diammine & adipic acid. 2. Caprolactum 3. Uses of nylon 6, 6:
|
|
| 920. |
Condensation product of caprolactum is :A. Nylon -6B. nylon -66C. Buna-SD. Nylon-2,6 |
| Answer» Correct Answer - A | |
| 921. |
Dihydroxy diethyl terephthalate is obtained by ethylene glycol and what ?A. PHBVB. DMTC. HDPED. PVC |
| Answer» Correct Answer - B | |
| 922. |
Dimethyl terephthalate is a ester ofA. Phthalic acidB. terephthalic acidC. oxalic acidD. carproic acid |
| Answer» Correct Answer - B | |
| 923. |
`epsi` - caprolactum is the monomer ofA. Nylon - 66B. Nylon -6C. TeryleneD. 66 carbon atom |
| Answer» Correct Answer - B | |
| 924. |
`epsi`- Caprolactum is a cyclic molecule having a ring containingA. 5 membersB. 6 membersC. 7 membersD. 8 members |
| Answer» Correct Answer - C | |
| 925. |
Terylene is used for makingA. sailsB. fabricsC. seat beltsD. all of these |
|
Answer» Correct Answer - D We know that , terylene is very strong fibre. It is used for making sails, fabrics and seat belts. |
|
| 926. |
Name two commercially important synthetic polymers. Also name their monomers. |
|
Answer» 1. Nylon 6,6 – Hexa methylene diamene and Adipic acid 2. Bakelite – Phenol and Formaldehyde |
|
| 927. |
Name the monomers in the following two polymers.i) Nylon 6,6ii) Bu |
|
Answer» i) Nylon 66 → Adipic acid + Hexamethylene- diamine ii) Buna-N → 1,3 butadiene + acrylonitrile |
|
| 928. |
Buna-S is a copolymer of styrene and ...... |
|
Answer» 1,3-Butadiene |
|
| 929. |
Dimethyl terephthalate and ethylene glycol react to formA. nylon -66B. nylon-6C. neopreneD. dacron |
|
Answer» Correct Answer - D We know that , dacron (terlene ) is obtained by dimethyl terphthalate with ethylene glycol. Dacron is slightly hygroscopic and has elastic recovery . It is non -inglammable and melts at 533 K. |
|
| 930. |
Caprolactum is used for manufacturingA. BakeliteB. nylon -6C. rubberD. dacron |
|
Answer» Correct Answer - B Nylon -6 is obtained by the polymerization of caprolactum . |
|
| 931. |
Name the monomers of Terylene and Buna N? |
|
Answer» Ethylene glycol and terephthalic acid are the monomers of terylene. Buna N is a copolymer of 1, 3-Butadiene and Vinyl cyanide. |
|
| 932. |
Name the monomers of Terylene? |
|
Answer» Terephthalic acid & ethylene glycol. |
|
| 933. |
Which of the following is not a polyamide?A. WoodB. LeatherC. Nylon -6 -homopolymer of -caprolactumD. Natural rubber |
|
Answer» Correct Answer - D Wool and leather are proteins and hence are natural polyamides. Nylon is also synthetic polyamide . |
|
| 934. |
The raw meterial for nylon -66 isA. adipic acidB. tertraflouroethyleneC. hexamethylene diamineD. both a and c |
|
Answer» Correct Answer - D We know that, Nylon -66 is formed by the reaction between adipic acid and hexamethylene diamine . Both monomwr units consist of 6 -carbon atoms. Therefore it is called nylon -66 and is the raw material of nylon -66 . |
|
| 935. |
The two monomers required in the preparation of terylene areA. vinyl chlorideB. phthalic acid and ethylene glycolC. terephthalic acid and ethylene glycolD. adipic acid and hexamethylene diamine |
|
Answer» Correct Answer - C We know that , terylene is prepared by the condensation polymerization of ethylene glycol and terephthlic acid with the elimination of water molecule. |
|
| 936. |
Write the name of monomers used for getting the following polymers :(i) Terylene(ii) Nylon 6, 6 |
|
Answer» (i) Ethylene glycol (Ethane-1, 2-diol) and terephthalic acid (Benzene-1, 4-dicarboxylic acid) (ii) Hexamethylenediamine and adipic acid. |
|
| 937. |
Write the structures of the monomers used for getting the following polymers : (a) PVC (b) Teflon (c) PMMA |
| Answer» (a) `CH_(2) = CHCl` (b) `CF_(2) = CF_(2)` (c) `CH_(2) = overset(COOCH_(3))overset(|)(C) - CH_(3)` | |
| 938. |
Write the name of monomers used for getting the following polymers :(i) Teflon (ii) Buna-S |
|
Answer» (i) Tetrafluoroethene (ii) 1,3-Butadiene and styrene. |
|
| 939. |
Write the name and structures of the monomers of the following polymers : (i) Buna-N (ii) Bakelite (iii) Teflon |
|
Answer» (i) Buna -N : Buta -1, 3-diene and Acrylonitrile (ii) Bakelite : Phenol and formaldehyde (iii) Teflon : Tetrafluoroethylene |
|
| 940. |
Write the monomers of the following polymers: (i) Buna‐N (ii) Teflon(iii) Neoprene. |
|
Answer» (i) 1, 3 – butadiene and acrylonitrile (ii) tetrafluoroethene (iii) chloroprene. |
|
| 941. |
Bulletproof helmets are made fromA. lexanB. saranC. GlyptalD. thiokol |
|
Answer» Correct Answer - A Bulletproof helmets are made from lexan. It is a polycarbonate polymer nearly as tough as steel, it is used in bulletproof windows and as face plates in the helmets worn by astronauts. Lexan is made by condensing phosgene with a diphenol with the elimination of HCl. |
|
| 942. |
Identify the heteropolymer from the list given below :A. PolytheneB. Nylon-6C. TeflonD. Nylon-6,6 |
|
Answer» Correct Answer - D Nylon-6,6 is made up of two types of monomers, which are hexamethylene diamine and adipic acid . Other polymers consist of single monomers as polythene (monomer is ethene ) , nylon-6 (monomer is caprolactam ) and teflon ( monomer is tetrafluoroethene ). |
|
| 943. |
which of the following statements is not correct?A. Caprolactum is the monomer of nylon-6B. Terylene is polyester polymerC. Phenol formaldehyde resin is known as bakeliteD. The monomer of natural rubber is butadiene |
|
Answer» Correct Answer - D |
|
| 944. |
Which element is used to vulcanize rubber?A. PB. BrC. ND. S |
|
Answer» Correct Answer - D |
|
| 945. |
The name of the polymer obtained by heating tetrafluoroethene with a persulphate catalyst under pressure is:A. nylon-66B. dacronC. teflonD. acrylonitrile |
|
Answer» Correct Answer - C |
|