173 + Interview Questions in High Polymers And Plastics in Applied Chemistry Page 1 InterviewSolution

1.	Which of the following is a stabilizer?(a) White lead(b) PbO(c) ZnO(d) Metallic oxidesThe question was asked by my college professor while I was bunking the class.My doubt is from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» The correct answer is (a) White lead To ELABORATE: The PbO, ZNO and metallic OXIDES are USED as the fillers. ZnO and metal oxides are also used as the accelerators. The STABILIZERS are white lead, lead chromate, red lead.

Discussion

2.	Cis-poly isoprene is present in ________(a) Hevea rubber(b) Guayule rubber(c) Percha rubber(d) Gutta rubberI had been asked this question during an interview.My question is from Natural Rubber in division High Polymers and Plastics of Applied Chemistry
Answer» RIGHT choice is (a) Hevea RUBBER The EXPLANATION: Cis-poly isoprene is present in the Hevea rubber and the trans-poly isoprene is present in guayule rubber and PERCHA rubber.

Discussion

3.	Compression moulding is applicable to ___________(a) Thermoplastic resins(b) Thermo setting resins(c) Both thermo plastic and thermo setting resins(d) Neither thermo plastics nor thermo setting resinsThe question was posed to me during an internship interview.The query is from Compounding of Plastics in section High Polymers and Plastics of Applied Chemistry
Answer» The correct CHOICE is (c) Both THERMO plastic and thermo setting RESINS To explain: Compression moulding is applied to both the thermo plastics and thermo setting resins. It is the ONE of the method of fabrication.

Discussion

4.	The bearings used in the propeller shafts are prepared using ________(a) Phenol-formaldehyde resin(b) TEFLON(c) Vinyl cyanide(d) Vinyl iso cyanideI got this question in a job interview.The origin of the question is Preparation, Properties and Applications of Some Compounds topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (a) Phenol-formaldehyde resin For EXPLANATION I WOULD say: The bearings USED in the propeller shafts are MADE by using Phenol-formaldehyde resin. It is ALSO used in the paper industry and rolling mills.

Discussion

5.	The polymerisation of a diacid with diol produces ____________(a) Polyethylene(b) Poly-ethane(c) Poly-methane(d) PolyesterThe question was posed to me in a job interview.I'd like to ask this question from Mechanism of Polymerization topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct choice is (d) Polyester Best EXPLANATION: The polymerisation of a diacid with DIOL produces the polyester. The terepthalic acid and ethylene GLYCOL REACTS to GIVE the polyester.

Discussion

6.	___________ is the property of recovering original shape after the removal of deforming strain.(a) Rigidity modulus(b) Youngs modulus(c) Elasticity(d) Bulk modulusThe question was asked in unit test.My enquiry is from Properties of Polymers topic in section High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT choice is (c) Elasticity The best explanation: The elasticity is the property of RECOVERING the original SHAPE after REMOVAL of deforming strain. Natural rubber possess high elasticity due to the coiled HELIX structure of poly isoprene.

Discussion

7.	Alternate straight chain polymers are ___________(a) Soft and flexible(b) Hard and flexible(c) Soft and brittle(d) Hard and brittleI got this question in semester exam.I'd like to ask this question from Types of Polymers in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct ANSWER is (a) SOFT and flexible To elaborate: ALTERNATE STRAIGHT CHAIN polymers are soft and brittle nature. All the straight chain polymers are soft and brittle.

Discussion

8.	Which of the following is the example of the polysaccharides?(a) Gelatin(b) Casein(c) Silk(d) CelluloseThis question was posed to me in my homework.This is a very interesting question from Applications of Elastromers topic in section High Polymers and Plastics of Applied Chemistry
Answer» RIGHT option is (d) Cellulose The best explanation: Cellulose comes under the POLYSACCHARIDES. Other examples of the polysaccharides are Starch. Gelatin, CASEIN and SILK are the examples of the proteins.

Discussion

9.	Vulcanized BUNA – N is resistant to _________(a) High temperatures(b) Low temperature(c) Oils(d) AcidsThis question was posed to me by my college director while I was bunking the class.This interesting question is from Synthetic Rubber in portion High Polymers and Plastics of Applied Chemistry
Answer» CORRECT CHOICE is (a) High TEMPERATURES To elaborate: Vulcanised BUNA – N is RESISTANT to the high temperatures. The normal BUNA – N is resistant to the acids, salts, heat and oils.

Discussion

10.	The elasticity of the rubber is due to its ___________(a) Trigonal planar(b) Octahedral(c) Pentagonal bipyramidal(d) HelixI got this question during an online interview.The query is from Natural Rubber topic in section High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (d) Helix Explanation: The elasticity of the RUBBER is due to its HELICAL structure. On RELEASING the stress, the CHAINS get reverted back to their ORIGINAL coiled state.

Discussion

11.	Bakelite is not _______(a) Hard(b) Strong(c) Rigid(d) WeakThis question was addressed to me in quiz.My enquiry is from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry
Answer» The correct option is (d) Weak For explanation I would say: BAKELITE is not weak. It is hard, STRONG and rigid. It is an EXCELLENT electrical INSULATOR. It is scratch RESISTANT and water resistant.

Discussion

12.	Phenol is made to react with formaldehyde in the presence of acid or alkali produces ________(a) Phenol(b) Poly vinyl chloride(c) Plasticized poly vinyl chloride(d) PolyethyleneThis question was posed to me in an interview.Query is from Preparation, Properties and Applications of Some Compounds topic in division High Polymers and Plastics of Applied Chemistry
Answer» Correct CHOICE is (a) Phenol The BEST explanation: Phenol is made to react with formaldehyde in the presence of ACID or ALKALI produces di, tri and mono phenols depending on the phenol formaldehyde ratio.

Discussion

13.	Blistering is almost eliminated in the __________(a) Transfer moulding(b) Blowing(c) Extrusion moulding(d) Injection mouldingI had been asked this question in an interview.This key question is from Compounding of Plastics in division High Polymers and Plastics of Applied Chemistry
Answer» The correct CHOICE is (a) Transfer moulding Best explanation: BLISTERING is ALMOST eliminated in the transfer moulding. It is ONE of the ADVANTAGES of the transfer moulding.

Discussion

14.	The strength of the polymer increases with ________ in molecular weight.(a) Increase(b) Decrease(c) No change(d) Slightly decreaseThis question was addressed to me during an online exam.This question is from Properties of Polymers in chapter High Polymers and Plastics of Applied Chemistry
Answer» CORRECT answer is (a) Increase Easy explanation: The strength of the polymer increases with an increase in the molecular WEIGHT. The INTER molecular attraction, presence of POLAR groups and chain length increases the strength.

Discussion

15.	Polymeric molecules __________ a definite crystalline structure.(a) Have(b) Do not have(c) Completely having(d) Partially havingThis question was addressed to me during a job interview.My doubt stems from Properties of Polymers in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct choice is (b) Do not have The best EXPLANATION: The POLYMERIC molecules do not have a definite crystalline STRUCTURE. The non-polymeric molecules have a definite crystalline structure.

Discussion

16.	The polymer absorbs ________ and swells in size.(a) Ethyl alcohol(b) Ether(c) Water(d) MethanolI have been asked this question in an interview.I would like to ask this question from Properties of Polymers in division High Polymers and Plastics of Applied Chemistry
Answer» Right choice is (c) Water For EXPLANATION I would say: The polymer absorbs the water and swells in size. SLOWLY polymer goes into the SOLUTION viscous polymer solution which is heterogeneous.

Discussion

17.	The heat obtained during the process of suspension polymerisation is _________(a) Uncontrolled(b) Controlled(c) Moderate(d) Partially controlledI have been asked this question during an interview for a job.Question is from Methods of Polymerization topic in section High Polymers and Plastics of Applied Chemistry
Answer» Right option is (b) Controlled Easiest explanation: One of the advantages of the suspension POLYMERISATION is HEAT CONTROL and the POLYMER beads can be SEPARATED easily.

Discussion

18.	The concentration of the micelle is measured as __________(a) Micelle concentration(b) Critical micelle concentration(c) Critical concentration(d) Monomer concentrationThe question was asked in final exam.The origin of the question is Methods of Polymerization in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct CHOICE is (b) Critical micelle CONCENTRATION The explanation is: TH concentration of the micelle is MEASURED as the critical micelle concentration(CMC). It should be more for the efficient polymerisation.

Discussion

19.	The functionality of the monomer must be _________(a) Two(b) Three(c) Four(d) Two or more than twoI have been asked this question in a job interview.Origin of the question is Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry
Answer» The correct ANSWER is (d) TWO or more than two Best EXPLANATION: The functionality of the monomer must be two or more than two. The MONOMERS must be dibasic acids, DIOLS and diamines.

Discussion

20.	Which of the following do not undergo the chain polymerisation?(a) Polyester(b) Vinyl(c) Allyl(d) DienesThis question was addressed to me in an online interview.The origin of the question is Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry
Answer» Right CHOICE is (a) POLYESTER Explanation: The polyester do not undergo the chain POLYMERISATION. The compounds having the double BOND undergo chain polymerisation. Olefins, vinyl, allyl and dienes undergo chain polymerisation.

Discussion

21.	The conversion of pi-bond to sigma bond during the chain propagation releases the energy of _________ K.cal/mole.(a) 10(b) 30(c) 40(d) 20The question was posed to me in homework.The question is from Mechanism of Polymerization in division High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (d) 20 To explain I would SAY: The conversion of the pi-bond into the SIGMA bond during the chain polymerisation releases the energy of the 20K.cal/mole. An INITIATOR is needed to START the polymerisation reaction.

Discussion

22.	Which of the following is made by the poly lactic acid?(a) Screws(b) Staples(c) Bone plating systems(d) TacksThis question was addressed to me by my college professor while I was bunking the class.I'm obligated to ask this question of Applications of Elastromers in division High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (a) Screws Easiest EXPLANATION: The screws can be made by the POLY lactic acid. The STAPLES, bone plating and tacks are made by the POLYHYDROXY alkanoates.

Discussion

23.	The fibre rein forced plastics has ____________ cost of production.(a) High(b) Low(c) Moderate(d) Very highI had been asked this question in examination.The query is from Applications of Elastromers topic in division High Polymers and Plastics of Applied Chemistry
Answer» Correct CHOICE is (b) Low The EXPLANATION is: The fibre rein forced plastics has a low cost of production. It has HIGH dimensional STABILITY. Low efficient of thermal expansion.

Discussion

24.	The rubber coagulates into soft _________ colour mass.(a) Yellow(b) Light yellow(c) White(d) Light pinkThis question was posed to me during an internship interview.Question is taken from Natural Rubber in chapter High Polymers and Plastics of Applied Chemistry
Answer» CORRECT choice is (c) White For EXPLANATION I would say: The RUBBER coagulates into soft white colour MASS which is called as coagulam and then filtered and washed with water.

Discussion

25.	TEFLON is obtained by the chain polymerisation of tetra fluoro ethylene in presence of __________ as initiator.(a) Hydrogen peroxide(b) Hydrogen nitrate(c) Hydrogen(d) Benzoyl peroxideI got this question during an internship interview.The origin of the question is Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT CHOICE is (d) BENZOYL PEROXIDE Explanation: TEFLON is obtained by the chain POLYMERISATION of the tetra fluoro ethylene in presence of the benzoyl peroxide as an initiator.

Discussion

26.	Poly carbonates are the durable materials with _________(a) Low impact resistances(b) High scratch resistance(c) Low scratch resistance(d) Low transparencyI had been asked this question in an interview for job.My question is from Preparation, Properties and Applications of Some Compounds in section High Polymers and Plastics of Applied Chemistry
Answer» CORRECT answer is (C) Low SCRATCH resistance Easiest explanation: Poly carbonates are the durable materials with the high impact RESISTANCES, low scratch resistances and high TRANSPARENCY.

Discussion

27.	The percentage of the fillers is up to ___________ total moulding mixture.(a) 20%(b) 30%(c) 40%(d) 50%This question was posed to me during an interview.I need to ask this question from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» RIGHT choice is (d) 50% The best I can explain: The percentage of the fillers is up to the 50% of the total moulding mixture of the PLASTICS. They REDUCE the COST of the polymers.

Discussion

28.	The thermo plastics resins are usually soluble in _________(a) Organic solvents(b) Only in some organic solvents(c) Polar solvents(d) Only in waterThis question was posed to me in an interview for job.This intriguing question originated from Plastics topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right choice is (a) ORGANIC solvents To explain I WOULD say: The thermo plastics RESINS are usually soluble in organic solvents. The thermo SETTING resins are insoluble in organic solvents.

Discussion

29.	The heating and cooling of the thermo plastics _________the chemical nature.(a) Alters(b) Do not alters(c) Alters slightly(d) May be altersI have been asked this question during an interview for a job.The question is from Plastics in portion High Polymers and Plastics of Applied Chemistry
Answer» The correct option is (b) Do not ALTERS The best I can explain: The heating and COOLING of the thermo plastics do not alters the chemical nature of these resins because the changes involved are PURELY of PHYSICAL nature.

Discussion

30.	A polymeric molecules possess the molecular weight _____________(a) Different(b) Fixed(c) That cannot be determined(d) May be determinedThis question was addressed to me in quiz.Asked question is from Properties of Polymers topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (a) DIFFERENT The best explanation: When polymerisation takes PLACE, the growing POLYMERIC chains are terminated at different sizes of MOLECULES. So, as a RESULT the polymeric molecules have different molecular weights.

Discussion

31.	The anion is produced by the __________ initiates the anionic chain polymerisation.(a) Homolytic fusion of initiator(b) Heterolytic fusion of initiator(c) Organo-alkali compounds(d) Inorganic compoundsI had been asked this question in homework.Question is from Mechanism of Polymerization in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT OPTION is (c) Organo-alkali compounds For explanation: The ANION is produced by the organo-alkali compounds like ethyl sodium, methyl POTASSIUM, butyl lithium ETC initiates the anionic chain polymerisation.

Discussion

32.	The ionic mechanism again divided into _____________(a) Two(b) Three(c) Four(d) FiveI got this question during an internship interview.The origin of the question is Mechanism of Polymerization topic in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT choice is (a) TWO The BEST I can EXPLAIN: The ionic mechanism is again dividing into two types. They are: cationic chain polymerisation and ANIONIC chain polymerisation.

Discussion

33.	____________ are used for the electron beam lithography.(a) Poly lactic acid(b) Polyhydroxy alkanoates(c) Polyesters(d) Conducting polymersI had been asked this question in an interview for internship.My question is based upon Applications of Elastromers topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (d) CONDUCTING POLYMERS The explanation is: Conducting polymers are used for the ELECTRON beam lithography. The conductivity of them increases with INCREASE in the chain LENGTH or conjugation.

Discussion

34.	BUNA – N can be vulcanised by __________(a) Sulphur(b) Oxygen(c) Sulphur dioxide(d) Sulphurous acidThe question was asked in an internship interview.I want to ask this question from Synthetic Rubber topic in division High Polymers and Plastics of Applied Chemistry
Answer» Correct CHOICE is (a) SULPHUR Easy explanation: BUNA – N can be vulcanised by the sulphur. BU stands for the butadiene and NA stands for SODIUM and N stands for acrylonitrile.

Discussion

35.	BUNA – S is otherwise called as __________(a) Sodium rubber(b) Synthesized rubber(c) Butadiene rubber(d) Styrene rubberThis question was addressed to me in a national level competition.I need to ask this question from Synthetic Rubber topic in section High Polymers and Plastics of Applied Chemistry
Answer» RIGHT option is (d) STYRENE RUBBER To elaborate: BUNA – S is otherwise called as styrene rubber. It is also called as the government rubber styrene.

Discussion

36.	Ameripol is nothing but _________(a) BUNA – N(b) BUNA – S(c) Dacron(d) TeflonI had been asked this question in an interview.My question is from Synthetic Rubber in portion High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (b) BUNA – S Explanation: Ameripol is NOTHING but BUNA – S. BUNA – S stands for the COMPOSITION of the MONOMERS and catalyst.

Discussion

37.	TEFLON is used to make chemical carry pipes due to its __________(a) extreme chemical resistance(b) Resistance towards alkalis(c) Resistance towards strong acids(d) Resistance towards saltsThis question was posed to me by my school principal while I was bunking the class.My question is taken from Preparation, Properties and Applications of Some Compounds topic in portion High Polymers and Plastics of Applied Chemistry
Answer» RIGHT choice is (a) extreme chemical RESISTANCE Easiest explanation: TEFLON is used to make chemical CARRY pipes DUE to its extreme chemical resistance. It is used for making the gaskets, pump parts, tank linings and TUBING.

Discussion

38.	The polymers which possess the property of elastic is called rubber.(a) True(b) FalseThis question was posed to me in an internship interview.I would like to ask this question from Natural Rubber in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct option is (a) True The best I can EXPLAIN: The POLYMERS which possess the property of elastic is called the rubber. Temporary DEFORMATION TAKES place.

Discussion

39.	Thermo forming technique is used for fabricating __________(a) Hollow plastic articles(b) Plastic tubes(c) Plastic wires(d) Three dimensional articlesI had been asked this question in quiz.My question is taken from Compounding of Plastics topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (d) Three dimensional ARTICLES To explain: Thermo forming TECHNIQUE is USED for fabricating the three dimensional articles. The TUBES and WIRES are fabricated by the extrusion moulding and hollow plastic articles by thermo forming.

Discussion

40.	Plasticized poly vinyl chloride can be used for _________(a) High frequency insulator parts(b) Bottle caps(c) Coated wires(d) Electrical insulationThis question was posed to me in an interview for internship.The origin of the question is Preparation, Properties and Applications of Some Compounds in division High Polymers and Plastics of Applied Chemistry
Answer» The correct option is (d) Electrical insulation To EXPLAIN: Plasticized poly vinyl CHLORIDE can be used for electrical insulation, injection MOULDING articles LIKE tool handles, radio and telephone components.

Discussion

41.	__________ prevent moulded article from sticking to the fabrication equipment.(a) Catalyst(b) Fillers(c) Lubricants(d) StabilizersI had been asked this question during an interview for a job.My doubt is from Compounding of Plastics in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct choice is (c) LUBRICANTS The best EXPLANATION: Lubricants prevent moulded ARTICLE from sticking to the fabrication equipment. They impart FLAWLESS and glossy FINISH to the products.

Discussion

42.	Very delicate and intricate shapes can be produced in transfer moulding due to ___________(a) Plasticized mix flows very fast into mould(b) Plasticized mix flows very slow into the mould(c) High pressure(d) Minimum temperatureI have been asked this question in examination.This is a very interesting question from Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry
Answer» The correct ANSWER is (b) Plasticized mix FLOWS very slow into the mould Explanation: Very delicate and intricate SHAPES can be PRODUCED in transfer moulding due to plasticized mix flows very slow into the mould. The mould is heating up to the curing temperature and allowed to set.

Discussion

43.	How many types of plastic resins are there?(a) 2(b) 3(c) 4(d) 5The question was posed to me at a job interview.The origin of the question is Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» CORRECT answer is (a) 2 For explanation: The plastic RESINS are classified into two TYPES. They are THERMO plastic resins and thermo setting resins.

Discussion

44.	The polymers which possess each monomer segment in regular configuration giving a definite structure is called _____________(a) Addition polymers(b) Condensation polymers(c) Stereo regular polymers(d) Regular polymersThis question was addressed to me in class test.Asked question is from Mechanism of Polymerization in chapter High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT OPTION is (c) STEREO regular polymers To elaborate: In stereo regular polymers. The polymers possess the monomer segments in a regular CONFIGURATION, giving a definite STRUCTURAL regularity as a whole are called stereo regular polymers.

Discussion

45.	Weight average molecular weight __________ on the weight of molecules in a polymer.(a) Dependent(b) Independent(c) Partially dependent(d) Neither dependent nor independentThe question was posed to me during an interview.This key question is from Properties of Polymers topic in section High Polymers and Plastics of Applied Chemistry
Answer» The correct option is (a) Dependent To elaborate: WEIGHT average MOLECULAR weight depends on the weight of the MOLECULES of each type and determined by making USE of colloidal properties.

Discussion

46.	Condensation polymers will release bi-products like ________(a) Ammonia(b) Hcl(c) Carbondioxide(d) OzoneI have been asked this question in my homework.I would like to ask this question from Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (B) Hcl Explanation: Condensation POLYMERS will release bi-products like WATER, HYDROGEN chloride. CH3OH ETC.

Discussion

47.	Conveyor belts are made by _______(a) BUNA – S(b) BUNA – N(c) Thiokol(d) TeflonI got this question in homework.This question is from Applications of Elastromers topic in portion High Polymers and Plastics of Applied Chemistry
Answer» CORRECT OPTION is (b) BUNA – N To ELABORATE: CONVEYOR belts are made by the BUNA – N. Vulcanised BUNA – N is resistant to the high temperature and ageing.

Discussion

48.	Glass laminates can be made by using ___________(a) Poly vinyl chloride(b) Bakelite(c) Polyethylene(d) PhenolI had been asked this question by my school principal while I was bunking the class.The origin of the question is Preparation, Properties and Applications of Some Compounds in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT option is (b) BAKELITE To explain I would SAY: Glass LAMINATES can be made by using Bakelite. Bakelite is also called as the phenol-formaldehyde resin.

Discussion

49.	Which of the following is the part of the injection moulding device?(a) Regulator(b) Guide pins(c) Top mould(d) Bottom mouldThe question was posed to me in an online quiz.The origin of the question is Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» The correct option is (d) Bottom mould To EXPLAIN I would say: The regulator I used in the injection moulding device. The GUIDE pins, TOP mould and bottom moulds are used in the compressing moulding of PLASTICS.

Discussion

50.	Plasticizers ___________ the strength of the plastics.(a) Increase(b) Decrease(c) Do not affect(d) May increase above the room temperatureThis question was posed to me during an internship interview.I need to ask this question from Compounding of Plastics in section High Polymers and Plastics of Applied Chemistry
Answer» The correct choice is (b) Decrease The best explanation: PLASTICIZER DECREASES the strength of the plastics. They ALSO decrease the chemical resistance of the plasticizers.

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following is a stabilizer?(a) White lead(b) PbO(c) ZnO(d) Metallic oxidesThe question was asked by my college professor while I was bunking the class.My doubt is from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry

Cis-poly isoprene is present in ________(a) Hevea rubber(b) Guayule rubber(c) Percha rubber(d) Gutta rubberI had been asked this question during an interview.My question is from Natural Rubber in division High Polymers and Plastics of Applied Chemistry

The polymerisation of a diacid with diol produces ____________(a) Polyethylene(b) Poly-ethane(c) Poly-methane(d) PolyesterThe question was posed to me in a job interview.I'd like to ask this question from Mechanism of Polymerization topic in chapter High Polymers and Plastics of Applied Chemistry

Alternate straight chain polymers are ___________(a) Soft and flexible(b) Hard and flexible(c) Soft and brittle(d) Hard and brittleI got this question in semester exam.I'd like to ask this question from Types of Polymers in chapter High Polymers and Plastics of Applied Chemistry

Which of the following is the example of the polysaccharides?(a) Gelatin(b) Casein(c) Silk(d) CelluloseThis question was posed to me in my homework.This is a very interesting question from Applications of Elastromers topic in section High Polymers and Plastics of Applied Chemistry

Vulcanized BUNA – N is resistant to _________(a) High temperatures(b) Low temperature(c) Oils(d) AcidsThis question was posed to me by my college director while I was bunking the class.This interesting question is from Synthetic Rubber in portion High Polymers and Plastics of Applied Chemistry

The elasticity of the rubber is due to its ___________(a) Trigonal planar(b) Octahedral(c) Pentagonal bipyramidal(d) HelixI got this question during an online interview.The query is from Natural Rubber topic in section High Polymers and Plastics of Applied Chemistry

Bakelite is not _______(a) Hard(b) Strong(c) Rigid(d) WeakThis question was addressed to me in quiz.My enquiry is from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry

Blistering is almost eliminated in the __________(a) Transfer moulding(b) Blowing(c) Extrusion moulding(d) Injection mouldingI had been asked this question in an interview.This key question is from Compounding of Plastics in division High Polymers and Plastics of Applied Chemistry

The strength of the polymer increases with ________ in molecular weight.(a) Increase(b) Decrease(c) No change(d) Slightly decreaseThis question was addressed to me during an online exam.This question is from Properties of Polymers in chapter High Polymers and Plastics of Applied Chemistry

Polymeric molecules __________ a definite crystalline structure.(a) Have(b) Do not have(c) Completely having(d) Partially havingThis question was addressed to me during a job interview.My doubt stems from Properties of Polymers in chapter High Polymers and Plastics of Applied Chemistry

The polymer absorbs ________ and swells in size.(a) Ethyl alcohol(b) Ether(c) Water(d) MethanolI have been asked this question in an interview.I would like to ask this question from Properties of Polymers in division High Polymers and Plastics of Applied Chemistry

The functionality of the monomer must be _________(a) Two(b) Three(c) Four(d) Two or more than twoI have been asked this question in a job interview.Origin of the question is Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry

Which of the following do not undergo the chain polymerisation?(a) Polyester(b) Vinyl(c) Allyl(d) DienesThis question was addressed to me in an online interview.The origin of the question is Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry

The conversion of pi-bond to sigma bond during the chain propagation releases the energy of _________ K.cal/mole.(a) 10(b) 30(c) 40(d) 20The question was posed to me in homework.The question is from Mechanism of Polymerization in division High Polymers and Plastics of Applied Chemistry

The fibre rein forced plastics has ____________ cost of production.(a) High(b) Low(c) Moderate(d) Very highI had been asked this question in examination.The query is from Applications of Elastromers topic in division High Polymers and Plastics of Applied Chemistry

The rubber coagulates into soft _________ colour mass.(a) Yellow(b) Light yellow(c) White(d) Light pinkThis question was posed to me during an internship interview.Question is taken from Natural Rubber in chapter High Polymers and Plastics of Applied Chemistry

The percentage of the fillers is up to ___________ total moulding mixture.(a) 20%(b) 30%(c) 40%(d) 50%This question was posed to me during an interview.I need to ask this question from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry

The heating and cooling of the thermo plastics _________the chemical nature.(a) Alters(b) Do not alters(c) Alters slightly(d) May be altersI have been asked this question during an interview for a job.The question is from Plastics in portion High Polymers and Plastics of Applied Chemistry

A polymeric molecules possess the molecular weight _____________(a) Different(b) Fixed(c) That cannot be determined(d) May be determinedThis question was addressed to me in quiz.Asked question is from Properties of Polymers topic in chapter High Polymers and Plastics of Applied Chemistry

The ionic mechanism again divided into _____________(a) Two(b) Three(c) Four(d) FiveI got this question during an internship interview.The origin of the question is Mechanism of Polymerization topic in division High Polymers and Plastics of Applied Chemistry

BUNA – N can be vulcanised by __________(a) Sulphur(b) Oxygen(c) Sulphur dioxide(d) Sulphurous acidThe question was asked in an internship interview.I want to ask this question from Synthetic Rubber topic in division High Polymers and Plastics of Applied Chemistry

Ameripol is nothing but _________(a) BUNA – N(b) BUNA – S(c) Dacron(d) TeflonI had been asked this question in an interview.My question is from Synthetic Rubber in portion High Polymers and Plastics of Applied Chemistry

The polymers which possess the property of elastic is called rubber.(a) True(b) FalseThis question was posed to me in an internship interview.I would like to ask this question from Natural Rubber in portion High Polymers and Plastics of Applied Chemistry

__________ prevent moulded article from sticking to the fabrication equipment.(a) Catalyst(b) Fillers(c) Lubricants(d) StabilizersI had been asked this question during an interview for a job.My doubt is from Compounding of Plastics in chapter High Polymers and Plastics of Applied Chemistry

How many types of plastic resins are there?(a) 2(b) 3(c) 4(d) 5The question was posed to me at a job interview.The origin of the question is Plastics topic in section High Polymers and Plastics of Applied Chemistry

Condensation polymers will release bi-products like ________(a) Ammonia(b) Hcl(c) Carbondioxide(d) OzoneI have been asked this question in my homework.I would like to ask this question from Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry

Conveyor belts are made by _______(a) BUNA – S(b) BUNA – N(c) Thiokol(d) TeflonI got this question in homework.This question is from Applications of Elastromers topic in portion High Polymers and Plastics of Applied Chemistry

Which of the following is the part of the injection moulding device?(a) Regulator(b) Guide pins(c) Top mould(d) Bottom mouldThe question was posed to me in an online quiz.The origin of the question is Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry