173 + Interview Questions in High Polymers And Plastics in Applied Chemistry Page 3 InterviewSolution

101.	Plasticizers are used to get the ___________ between the polymeric molecules.(a) Attraction(b) Freedom of movement(c) Pi-bond(d) Sigma bondI got this question during an interview.This question is from Compounding of Plastics in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (b) Freedom of MOVEMENT To explain I would SAY: Plasticizers are used to get the greater freedom of movement between the polymeric molecules. Plasticizers neutralise the intermolecular forces of ATTRACTION between POLYMER CHAINS.

Discussion

102.	Which of the following are not used lubricants?(a) Oils(b) Waxes(c) Oleates(d) SaltsI got this question in an online quiz.Asked question is from Compounding of Plastics in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct OPTION is (d) Salts Best EXPLANATION: The most COMMONLY used lubricants are oils, waxes, oleates, stereates and SOAPS. The salts are not used as lubricants.

Discussion

103.	__________ acts as a binder in plastics.(a) Resins(b) Plasticizers(c) Lubricant(d) AcceleratorsThe question was asked in a job interview.I'm obligated to ask this question of Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct choice is (a) RESINS The best I can explain: Resins acts as the binders in plastic which holds the different constituents together. The PRODUCT of polymerisation is CALLED resins.

Discussion

104.	Usually the polymer resin is mixed with four to ten ingredients during the fabrication to impart useful properties to the finished articles. This is called mix.(a) True(b) FalseI had been asked this question during a job interview.My query is from Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct option is (a) True To elaborate: Usually the polymer resin is mixed with four to ten ingredients during the fabrication to IMPART useful properties to the FINISHED ARTICLES. This is called MIX. They are must and should to GET good plastic.

Discussion

105.	Emulsion polymerization is a type of polymerization that occurs in emulsion droplets called __________(a) Emulsified droplets(b) Micelle(c) Emulsifying droplets(d) Emulsifier dropletsI had been asked this question during an interview.Origin of the question is Methods of Polymerization topic in portion High Polymers and Plastics of Applied Chemistry
Answer» The correct CHOICE is (B) Micelle Easy EXPLANATION: Emulsion POLYMERIZATION is a type of polymerization that occurs in emulsion DROPLETS called micelle.

Discussion

106.	Tacticity of the polymers is the arrangement of the ___________ on carbon backbone.(a) Hydrogen atoms(b) Nitrogen atoms(c) Functional groups(d) CarbonsI have been asked this question in final exam.This interesting question is from Types of Polymers topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (C) Functional groups The EXPLANATION is: The tacticity is defined as the arrangement of the function groups on the carbon back bone of the POLYMER is CALLED tacticity of the polymer.

Discussion

107.	The fabrication cost is __________ for plastics.(a) High(b) Low(c) Moderate(d) Very highThis question was addressed to me in a national level competition.This interesting question is from Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» Correct ANSWER is (b) LOW Explanation: The FABRICATION cost of the plastics is low. It has EASY workability. It is chemically INERT. It do not react with any other compounds.

Discussion

108.	The filtered latex is sent into the tanks and treated with __________(a) Acetic acid(b) Formaldehyde(c) Acetaldehyde(d) Poly isopreneI had been asked this question during a job interview.My doubt is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry
Answer» Right CHOICE is (a) Acetic ACID For EXPLANATION: The FILTERED latex is sent into the tanks and treated with the acetic acid. Instead of acetic acid, sometimes we can ALSO use the formic acid.

Discussion

109.	Poly carbonates possess glass transition temperature of __________(a) 144^oC(b) 145^oC(c) 146^oC(d) 147^oCI had been asked this question at a job interview.My doubt stems from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry
Answer» CORRECT option is (d) 147^oC Explanation: Poly CARBONATES has the TRANSITION TEMPERATURE of 147^oC. Poly carbonates are transparent and good electrical insulators.

Discussion

110.	The impact strength is measured as _________(a) Elasticity(b) Strength(c) Permeability(d) ToughnessI got this question in a job interview.The above asked question is from Properties of Polymers in division High Polymers and Plastics of Applied Chemistry
Answer» RIGHT OPTION is (d) Toughness For EXPLANATION: The IMPACT strength is measured as the toughness. Below the glass TRANSITION temperature, the polymers break.

Discussion

111.	Based on tacticity, the polymers are divided into __________ types.(a) Two(b) Three(c) Four(d) FiveThis question was posed to me during an online exam.This intriguing question originated from Types of Polymers topic in division High Polymers and Plastics of Applied Chemistry
Answer» RIGHT answer is (b) THREE Best explanation: Based on tacticity, the polymers are divided into three TYPES. They are Isotactic polymers, Atactic polymers and syndiotactic POLYMER.

Discussion

112.	A straight chain polymer comes under the _________ type of the polymers.(a) Homo polymers(b) Co-polymers(c) Regular chain copolymers(d) Irregular straight chain copolymersI got this question in exam.I want to ask this question from Types of Polymers topic in section High Polymers and Plastics of Applied Chemistry
Answer» Right choice is (a) Homo polymers The explanation is: The straight chain polymers COME under the homo polymers. The REGULAR straight chain COPOLYMERS and IRREGULAR straight chain copolymer comes under the straight chain copolymers.

Discussion

113.	The polymers are classified into _________ types based on the nature of polymerization.(a) 5(b) 2(c) 3(d) 4This question was addressed to me in homework.I'm obligated to ask this question of Types of Polymers topic in division High Polymers and Plastics of Applied Chemistry
Answer» CORRECT answer is (b) 2 For EXPLANATION I would say: The POLYMERS are classified into two types based upon their nature of polymerization. They are HOMOPOLYMERS and co polymers.

Discussion

114.	The conductivity of the conducting polymers increases with __________(a) Increase in temperature(b) Decrease in temperature(c) Independent of temperature(d) Independent of temperature at some conditionsI have been asked this question during an interview.This intriguing question originated from Applications of Elastromers in chapter High Polymers and Plastics of Applied Chemistry
Answer» CORRECT OPTION is (a) Increase in temperature Easy EXPLANATION: The conductivity of the conducting polymers increases with an increase in temperature. It is temperature DEPENDENT.

Discussion

115.	The crystallinity in Polyhydroxy alkanoates is lie in the range of__________(a) 40%(b) 50%(c) 60%(d) 70%The question was asked in quiz.My question comes from Applications of Elastromers topic in division High Polymers and Plastics of Applied Chemistry
Answer» CORRECT choice is (d) 70% The best explanation: The crystallinity in polyhydroxy alkanoates is in the RANGE of 70%. Polyhydroxy alkanoates polymers are THERMOPLASTICS.

Discussion

116.	Solvent extraction process is used to extract __________(a) Crepe rubber(b) Smoked rubber(c) Gutta percha(d) Guayule rubberThe question was asked during an online exam.This question is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT answer is (c) GUTTA percha The best explanation: Solvent extraction process is the method of EXTRACTING the gutta percha. It is extracted from the matured LEAVES of the palagum gutta and dichopsis gutta.

Discussion

117.	The low density polyethylene has a melting point.(a) 84^0C(b) 85^0C(c) 86^0C(d) 87^0CI have been asked this question by my school principal while I was bunking the class.My question comes from Preparation, Properties and Applications of Some Compounds in portion High Polymers and Plastics of Applied Chemistry
Answer» CORRECT choice is (d) 87^0C The explanation: The low density POLYETHYLENE POSSESS branched CHAIN structure and its melting point is about the 87^0C.

Discussion

118.	Which of the following is not part of the transfer moulding device?(a) Hinge(b) Plunger(c) Orifice(d) SpreaderI had been asked this question in an interview for internship.Enquiry is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (d) SPREADER Easy explanation: The HINGE, plunger and orifice are PRESENT in the transfer moulding. The SOFT PLASTIC is injected by plunger, ejected from orifice and spreader is present in the injection moulding.

Discussion

119.	A hot, softened thermo plastic tube is called as _____________(a) Extruded tube(b) Hopper(c) Die(d) ParisonThe question was posed to me in an online quiz.I need to ask this question from Compounding of Plastics topic in chapter High Polymers and Plastics of Applied Chemistry
Answer» The correct answer is (d) Parison To elaborate: A hot, softened thermo plastic TUBE is CALLED parison is PLACED inside a two piece hollow tube in the mould. It is used in the BLOWING technique.

Discussion

120.	Lubricants are used to prevent the moulded article from _________(a) Rusting(b) Sticking(c) Not sticking(d) BurningThis question was posed to me in semester exam.Question is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry
Answer» Correct OPTION is (b) Sticking The best explanation: Lubricants are USED to prevent the moulded article from sticking to the FABRICATION equipment. Lubricants MAKE the MOULDING plastics easier.

Discussion

121.	Poly vinyl acetate is soluble in the water.(a) True(b) FalseThis question was addressed to me in homework.I want to ask this question from Applications of Elastromers in chapter High Polymers and Plastics of Applied Chemistry
Answer» The correct answer is (a) True For explanation: POLY vinyl acetate is SOLUBLE in the water. It BELONGS to the class of the vinyl polymers.

Discussion

122.	Plastics are ________ in weight.(a) Very heavy(b) Light(c) Negligible(d) HeavyThis question was posed to me during an internship interview.My doubt stems from Plastics in division High Polymers and Plastics of Applied Chemistry
Answer» Correct choice is (b) Light The explanation: Plastics are light in weight. They have GOOD thermal and electrical INSULATION. So, they do not CONDUCT ELECTRICITY.

Discussion

123.	Plastics are the materials obtained by mixing the __________ with the other ingredients which impart special engineering properties.(a) Resin(b) Monomer(c) Catalyst(d) Any polymerThe question was posed to me by my college director while I was bunking the class.This interesting question is from Plastics topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct option is (a) Resin For explanation I WOULD say: Plastics are the MATERIALS OBTAINED by mixing the resin with the other ingredients having special engineering properties. Resin is the polymerisation and forms the major part of the plastics.

Discussion

124.	The polymer is 100% crystalline.(a) True(b) FalseI have been asked this question in quiz.My doubt stems from Properties of Polymers in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct OPTION is (b) False The best I can explain: No polymer is 100% crystalline or 100% AMORPHOUS. A polymer is a MIXTURE of 60% crystalline and 40% amorphous.

Discussion

125.	BUNA – N is used in the auto mobiles because of its _______(a) Heavy weight(b) Light weight(c) Easy production(d) Less cost of productionThis question was posed to me in quiz.The above asked question is from Applications of Elastromers in portion High Polymers and Plastics of Applied Chemistry
Answer» RIGHT answer is (B) Light weight Explanation: BUNA – N is USED in auto mobile INDUSTRIES. It is used to make the auto mobile PARTS because the BUNA – N is the strong polymer and has the light weight.

Discussion

126.	In solvent extraction process, the mature leaves are grounded and heated about _________(a) 40^oC(b) 50^oC(c) 60^oC(d) 70^oCThis question was addressed to me in an online interview.My enquiry is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (d) 70^oC Easiest explanation: In SOLVENT extraction process, the MATURE LEAVES are GROUNDED and HEATED about 70^oC. It is heated along with water.

Discussion

127.	The molecular weight of the step polymers is not the _________(a) Sum of the molecular weights of monomer(b) Sum of the molecular weight of some monomers(c) Sum of the water molecular weight(d) Sum of the weights of the bi-products.I have been asked this question in final exam.Question is taken from Mechanism of Polymerization in chapter High Polymers and Plastics of Applied Chemistry
Answer» The correct choice is (a) SUM of the molecular WEIGHTS of monomer For explanation I would say: The molecular weights of the step POLYMERS is not the sum of the molecular weights of the monomers. The elimination of the bi-products is DONE.

Discussion

128.	Which one of the following is not the three step polymerisation?(a) Co-ordination polymerisation(b) Anionic chain polymerisation(c) Cationic chain polymerisation(d) Step polymerisationI got this question in class test.This interesting question is from Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry
Answer» The correct answer is (d) STEP polymerisation For explanation I would say: Step polymerisation or the condensation polymerisation is not the THREE step polymerisation LIKE INITIATION, propagation and termination.

Discussion

129.	The step polymerisation takes place by __________(a) Addition reaction(b) Condensation reaction(c) Co-ordination polymerisation(d) Anionic polymerisationThis question was posed to me in quiz.This is a very interesting question from Mechanism of Polymerization topic in section High Polymers and Plastics of Applied Chemistry
Answer» RIGHT answer is (B) Condensation reaction Explanation: The step POLYMERISATION takes place by the condensation reactions of the functional GROUPS of the MONOMERS. Hence it is called as condensation polymerisation.

Discussion

130.	While producing the smoked rubber, the filtered latex is fed into long rectangular tanks of _________ deep.(a) 1m(b) 2m(c) 50cm(d) 30cmThis question was addressed to me by my college director while I was bunking the class.This interesting question is from Natural Rubber in section High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (d) 30cm The best explanation: In ONE type of PROCESSING the FILTERED LATEX is fed into long rectangular tanks of 30cm deep and 1M wide.

Discussion

131.	Thermo forming method is a combination of __________ and __________(a) Blowing, extrusion moulding(b) Blowing, compression moulding(c) Extrusion moulding, compression moulding(d) Transfer moulding, blowingThe question was asked in a job interview.My enquiry is from Compounding of Plastics in division High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (c) EXTRUSION MOULDING, compression moulding To explain: The thermoforming METHOD is a COMBINATION of the extrusion moulding and compression moulding.

Discussion

132.	The catalyst used in the co-ordination polymerisation is __________(a) Ziegler-natta catalyst(b) Vanadium pent-oxide(c) Nitric oxide(d) ZeonarThe question was asked in a national level competition.My doubt stems from Mechanism of Polymerization in section High Polymers and Plastics of Applied Chemistry
Answer» RIGHT choice is (a) Ziegler-natta catalyst The EXPLANATION is: The catalyst used in the co-ordination POLYMERISATION is Ziegler-natta catalyst. Combination of the metal halides and ORGANOMETALLIC compounds are called as Ziegler-natta catalyst.

Discussion

133.	Which of the following do not synthesized by the emulsion polymerisation?(a) Teflon(b) BUNA -S(c) Polystyrene(d) Polyvinyl chlorideI got this question in an interview.This question is from Methods of Polymerization in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right option is (d) POLYVINYL chloride For explanation: The polyvinyl chloride is not SYNTHESIZED using the emulsion POLYMERISATION. It is produced by the SUSPENSION polymerisation METHOD.

Discussion

134.	The bi products like water, methyl alcohol are produced in chain reaction.(a) True(b) FalseThe question was posed to me in an interview for internship.The origin of the question is Mechanism of Polymerization in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct OPTION is (B) False For explanation I would say: The BI PRODUCTS like water, methyl alcohol are not PRODUCED in the chain reaction. The polymer has the same chemical composition as that of the monomer in chain polymerisation.

Discussion

135.	For making compostable packing material _______ is used.(a) Poly lactic acid(b) Polyhydroxy alkanoates(c) Dacron(d) TeflonI got this question in quiz.Origin of the question is Applications of Elastromers in chapter High Polymers and Plastics of Applied Chemistry
Answer» Correct answer is (a) POLY LACTIC acid The EXPLANATION is: The poly lactic acid is used to prepare the compostable packing material and DISPOSABLE garments etc.

Discussion

136.	The glass transition temperature of poly lactic acid is __________(a) 20-30^oC(b) 50-55^oC(c) 60-65^oC(d) 30-40^oCThe question was asked in my homework.This key question is from Applications of Elastromers in division High Polymers and Plastics of Applied Chemistry
Answer» CORRECT CHOICE is (c) 60-65^oC To elaborate: The glass transition TEMPERATURE of POLY lactic acid is 60-65^oC. It possess the melting point of 173-178^oC.

Discussion

137.	Which of the following rubber cannot be vulcanised?(a) BUNA – S(b) BUNA – N(c) Thiokol rubber(d) TeflonThis question was addressed to me in class test.This key question is from Synthetic Rubber topic in section High Polymers and Plastics of Applied Chemistry
Answer» Right option is (C) THIOKOL rubber Easiest explanation: The Thiokol rubber is also called as the poly sulphide rubber. The Thiokol rubber cannot be vulcanised and it cannot FORM HARD rubber.

Discussion

138.	Manufacture of tyres can be done by __________(a) BUNA – N(b) Thiokol rubber(c) Poly sulphide rubber(d) BUNA – SI had been asked this question in an online interview.Origin of the question is Synthetic Rubber topic in division High Polymers and Plastics of Applied Chemistry
Answer» The correct choice is (d) BUNA – S The best I can explain: Manufacture of tyres can be done by the BUNA – S. It is used in the FOOT WARE industry for MAKING SHOE soles and foot ware components.

Discussion

139.	While producing smoked rubber, the latex and reacted with formic acid, the vertical partition plates are inserted and left undisturbed for _________(a) 13 hours(b) 14 hours(c) 15 hours(d) 16 hoursI have been asked this question during an online interview.The doubt is from Natural Rubber in portion High Polymers and Plastics of Applied Chemistry
Answer» RIGHT option is (d) 16 HOURS Best EXPLANATION: After introducing the latex and reacted with formic acid, the vertical partition PLATES are inserted and left UNDISTURBED for 16 hours.

Discussion

140.	The chair, house and car are some of the applications of the __________(a) Bakelite(b) TEFLON(c) Polyurethane(d) Poly vinyl chlorideI got this question in an online quiz.This intriguing question originated from Preparation, Properties and Applications of Some Compounds topic in division High Polymers and Plastics of Applied Chemistry
Answer» Right answer is (c) POLYURETHANE For EXPLANATION: The chair, house and car are some of the APPLICATIONS of the polyurethane. It has MANY applications in the daily life also.

Discussion

141.	Bakelite is __________(a) Good anion exchanging resin(b) Attacked by acids(c) Attacked by salts(d) Resistant to alkalisThis question was posed to me in an online quiz.This interesting question is from Preparation, Properties and Applications of Some Compounds topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Correct ANSWER is (a) Good anion exchanging resin To ELABORATE: Bakelite is a good anionic exchanging resin. It is a good adhesive and it is RESISTANT to acids and salts. It is attacked by the ALKALIS.

Discussion

142.	Curing means the time given to the polymer for setting.(a) True(b) FalseThis question was posed to me during an interview.Query is from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry
Answer» The correct ANSWER is (a) True For explanation I would say: Curing means the time given to the POLYMER for setting in the MOULD. It is DONE either by heating in case of thermo plastic resins.

Discussion

143.	Which of the following is attacks the polyethylene?(a) Kerosene(b) Strong acids(c) Alkalis(d) Salt solutionsThe question was asked by my school teacher while I was bunking the class.Origin of the question is Preparation, Properties and Applications of Some Compounds topic in division High Polymers and Plastics of Applied Chemistry
Answer» Right choice is (a) Kerosene Easiest EXPLANATION: The polyethylene is resistant to strong acids, alkalis and SALT SOLUTIONS. It is ATTACKED by the oils and organic solvents. It is also resistant to OXYGEN, carbondioxide.

Discussion

144.	In compression moulding, the cavity is filled with ________ plastic.(a) Solid(b) Liquid(c) Gaseous(d) May be solid or liquidThe question was posed to me during an interview.The question is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry
Answer» CORRECT answer is (B) Liquid To elaborate: The top and bottom MOULDS are capable of moving relatively. When heat and pressure is APPLIED according to the specification, the fluidized plastic is filled in the CAVITY.

Discussion

145.	Sun glasses, computer cases and printing substrate can be done by using _________(a) Polyurethanes(b) Poly carbonates(c) Poly vinyl cyanide(d) PolyethyleneThe question was asked by my college professor while I was bunking the class.I'd like to ask this question from Preparation, Properties and Applications of Some Compounds topic in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT option is (b) Poly carbonates Best explanation: Sun GLASSES, COMPUTER cases and printing substrate can be done by using poly carbonates. Theft proplastic PACKAGING which cannot be opened by hand are also MADE from poly carbonates.

Discussion

146.	While producing the smoked rubber, the sheets are hanged for about _________ in smoked chambers.(a) 1 day(b) 2 days(c) 3 days(d) 4 daysThis question was addressed to me in unit test.Query is from Natural Rubber in division High Polymers and Plastics of Applied Chemistry
Answer» The CORRECT ANSWER is (d) 4 DAYS The best explanation: While producing the smoked rubber, the sheets are hanged for about 4 days in smoked chambers. The final ROLLER GIVES ribbed pattern to the rubber sheet.

Discussion

147.	Polyurethanes are used for purifying the ________(a) Water(b) Alcohol(c) Acids(d) Salt solutionsI had been asked this question during an interview.Question is taken from Preparation, Properties and Applications of Some Compounds in chapter High Polymers and Plastics of Applied Chemistry
Answer» Right CHOICE is (a) Water The best I can EXPLAIN: Polyurethanes are used for purifying the water. They are used in REFRIGERATION and freezers ALSO.

Discussion

148.	Poly carbonates are used as ________ in the high stability capacitors.(a) Accelerator(b) Inhibitor(c) Dielectric(d) InitiatorI have been asked this question in an interview.I want to ask this question from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry
Answer» CORRECT OPTION is (C) DIELECTRIC Explanation: POLY carbonates are used as the dielectric in the high stability capacitors. Poly carbonates are used in the construction materials.

Discussion

149.	___________ increases the flexibility of the polymer.(a) Resins(b) Catalysts(c) Lubricants(d) PlasticizersI had been asked this question in an online interview.This is a very interesting question from Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry
Answer» Right OPTION is (d) Plasticizers For explanation: Plasticizers are USED to increase the FLEXIBILITY of the POLYMER. It is ALSO used to the increase of plasticity of the polymer.

Discussion

150.	Poly vinyl chloride is produced by the free radical chain polymerisation of the vinyl chloride in presence of the benzoyl peroxide.(a) True(b) FalseI got this question in class test.Enquiry is from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry
Answer» Correct ANSWER is (a) True To explain I would say: POLY VINYL chloride is produced by the FREE radical chain polymerisation of the vinyl chloride in presence of the BENZOYL peroxide. The hydrogen peroxide can also be used as the catalyst instead of the benzoyl peroxide.

Discussion

Explore topic-wise InterviewSolutions in .

Plasticizers are used to get the ___________ between the polymeric molecules.(a) Attraction(b) Freedom of movement(c) Pi-bond(d) Sigma bondI got this question during an interview.This question is from Compounding of Plastics in chapter High Polymers and Plastics of Applied Chemistry

Which of the following are not used lubricants?(a) Oils(b) Waxes(c) Oleates(d) SaltsI got this question in an online quiz.Asked question is from Compounding of Plastics in portion High Polymers and Plastics of Applied Chemistry

__________ acts as a binder in plastics.(a) Resins(b) Plasticizers(c) Lubricant(d) AcceleratorsThe question was asked in a job interview.I'm obligated to ask this question of Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry

The fabrication cost is __________ for plastics.(a) High(b) Low(c) Moderate(d) Very highThis question was addressed to me in a national level competition.This interesting question is from Plastics topic in section High Polymers and Plastics of Applied Chemistry

The filtered latex is sent into the tanks and treated with __________(a) Acetic acid(b) Formaldehyde(c) Acetaldehyde(d) Poly isopreneI had been asked this question during a job interview.My doubt is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry

Poly carbonates possess glass transition temperature of __________(a) 144^oC(b) 145^oC(c) 146^oC(d) 147^oCI had been asked this question at a job interview.My doubt stems from Preparation, Properties and Applications of Some Compounds topic in section High Polymers and Plastics of Applied Chemistry

The impact strength is measured as _________(a) Elasticity(b) Strength(c) Permeability(d) ToughnessI got this question in a job interview.The above asked question is from Properties of Polymers in division High Polymers and Plastics of Applied Chemistry

Based on tacticity, the polymers are divided into __________ types.(a) Two(b) Three(c) Four(d) FiveThis question was posed to me during an online exam.This intriguing question originated from Types of Polymers topic in division High Polymers and Plastics of Applied Chemistry

The polymers are classified into _________ types based on the nature of polymerization.(a) 5(b) 2(c) 3(d) 4This question was addressed to me in homework.I'm obligated to ask this question of Types of Polymers topic in division High Polymers and Plastics of Applied Chemistry

The crystallinity in Polyhydroxy alkanoates is lie in the range of__________(a) 40%(b) 50%(c) 60%(d) 70%The question was asked in quiz.My question comes from Applications of Elastromers topic in division High Polymers and Plastics of Applied Chemistry

Solvent extraction process is used to extract __________(a) Crepe rubber(b) Smoked rubber(c) Gutta percha(d) Guayule rubberThe question was asked during an online exam.This question is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry

Which of the following is not part of the transfer moulding device?(a) Hinge(b) Plunger(c) Orifice(d) SpreaderI had been asked this question in an interview for internship.Enquiry is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry

A hot, softened thermo plastic tube is called as _____________(a) Extruded tube(b) Hopper(c) Die(d) ParisonThe question was posed to me in an online quiz.I need to ask this question from Compounding of Plastics topic in chapter High Polymers and Plastics of Applied Chemistry

Lubricants are used to prevent the moulded article from _________(a) Rusting(b) Sticking(c) Not sticking(d) BurningThis question was posed to me in semester exam.Question is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry

Poly vinyl acetate is soluble in the water.(a) True(b) FalseThis question was addressed to me in homework.I want to ask this question from Applications of Elastromers in chapter High Polymers and Plastics of Applied Chemistry

Plastics are ________ in weight.(a) Very heavy(b) Light(c) Negligible(d) HeavyThis question was posed to me during an internship interview.My doubt stems from Plastics in division High Polymers and Plastics of Applied Chemistry

The polymer is 100% crystalline.(a) True(b) FalseI have been asked this question in quiz.My doubt stems from Properties of Polymers in portion High Polymers and Plastics of Applied Chemistry

BUNA – N is used in the auto mobiles because of its _______(a) Heavy weight(b) Light weight(c) Easy production(d) Less cost of productionThis question was posed to me in quiz.The above asked question is from Applications of Elastromers in portion High Polymers and Plastics of Applied Chemistry

In solvent extraction process, the mature leaves are grounded and heated about _________(a) 40^oC(b) 50^oC(c) 60^oC(d) 70^oCThis question was addressed to me in an online interview.My enquiry is from Natural Rubber topic in division High Polymers and Plastics of Applied Chemistry

Which of the following do not synthesized by the emulsion polymerisation?(a) Teflon(b) BUNA -S(c) Polystyrene(d) Polyvinyl chlorideI got this question in an interview.This question is from Methods of Polymerization in chapter High Polymers and Plastics of Applied Chemistry

The bi products like water, methyl alcohol are produced in chain reaction.(a) True(b) FalseThe question was posed to me in an interview for internship.The origin of the question is Mechanism of Polymerization in portion High Polymers and Plastics of Applied Chemistry

For making compostable packing material _______ is used.(a) Poly lactic acid(b) Polyhydroxy alkanoates(c) Dacron(d) TeflonI got this question in quiz.Origin of the question is Applications of Elastromers in chapter High Polymers and Plastics of Applied Chemistry

The glass transition temperature of poly lactic acid is __________(a) 20-30^oC(b) 50-55^oC(c) 60-65^oC(d) 30-40^oCThe question was asked in my homework.This key question is from Applications of Elastromers in division High Polymers and Plastics of Applied Chemistry

Which of the following rubber cannot be vulcanised?(a) BUNA – S(b) BUNA – N(c) Thiokol rubber(d) TeflonThis question was addressed to me in class test.This key question is from Synthetic Rubber topic in section High Polymers and Plastics of Applied Chemistry

Manufacture of tyres can be done by __________(a) BUNA – N(b) Thiokol rubber(c) Poly sulphide rubber(d) BUNA – SI had been asked this question in an online interview.Origin of the question is Synthetic Rubber topic in division High Polymers and Plastics of Applied Chemistry

Curing means the time given to the polymer for setting.(a) True(b) FalseThis question was posed to me during an interview.Query is from Compounding of Plastics topic in section High Polymers and Plastics of Applied Chemistry

In compression moulding, the cavity is filled with ________ plastic.(a) Solid(b) Liquid(c) Gaseous(d) May be solid or liquidThe question was posed to me during an interview.The question is from Compounding of Plastics topic in division High Polymers and Plastics of Applied Chemistry

While producing the smoked rubber, the sheets are hanged for about _________ in smoked chambers.(a) 1 day(b) 2 days(c) 3 days(d) 4 daysThis question was addressed to me in unit test.Query is from Natural Rubber in division High Polymers and Plastics of Applied Chemistry

Polyurethanes are used for purifying the ________(a) Water(b) Alcohol(c) Acids(d) Salt solutionsI had been asked this question during an interview.Question is taken from Preparation, Properties and Applications of Some Compounds in chapter High Polymers and Plastics of Applied Chemistry

___________ increases the flexibility of the polymer.(a) Resins(b) Catalysts(c) Lubricants(d) PlasticizersI had been asked this question in an online interview.This is a very interesting question from Compounding of Plastics topic in portion High Polymers and Plastics of Applied Chemistry