Which type of materials soften on heating and regains its original shape on cooling?(a) Thermoplastics(b) Thermosetting(c) Rubber(d) All of the mentionedI got this question by my college director while I was bunking the class.This interesting question is from Polymer Chemistry Introduction in division Principles of Polymer Chemistry of Unit Processes

Which type of materials soften on heating and regains its original sha

1.	Which type of materials soften on heating and regains its original shape on cooling?(a) Thermoplastics(b) Thermosetting(c) Rubber(d) All of the mentionedI got this question by my college director while I was bunking the class.This interesting question is from Polymer Chemistry Introduction in division Principles of Polymer Chemistry of Unit Processes
Answer» Right option is (a) Thermoplastics Easiest explanation: Some of them SOFTEN upon heating and regain their original HARDNESS upon subsequent cooling, whereby the heating and cooling cycle can be REPEATED at will. These materials are called thermoplastics.

Discussion

No Comment Found

Related InterviewSolutions

Which phenomena arise because of the requirements of thermodynamic equilibrium between two phases?(a) Freezing-point depression(b) Vapour-pressure drop(c) Boiling-point elevation(d) All of the mentionedThis question was posed to me in an interview for internship.This intriguing question originated from Methods of Polymerization topic in division Principles of Polymer Chemistry of Unit Processes
The kinetics of ionic polymerization has common principles with which polymerization?(a) Addition(b) Pearl(c) Free-radical(d) Ion exchangeThis question was posed to me in an online quiz.My question is from Methods of Polymerization in section Principles of Polymer Chemistry of Unit Processes
How is the degree of polymerization of the polymer obtained?(a) Termination/ Propagation(b) Propagation/ Termination(c) Propagation* Termination(d) None of the mentionedThis question was addressed to me in an online quiz.Question is from Methods of Polymerization topic in section Principles of Polymer Chemistry of Unit Processes
An important parameter in all polycondensations is the “extent of reaction”.(a) True(b) FalseI have been asked this question in an online quiz.The origin of the question is Methods of Polymerization in section Principles of Polymer Chemistry of Unit Processes
What is the principal feature of a polycondensation?(a) Stable intermediate(b) Rate of condensation is independent(c) All of the mentioned(d) None of the mentionedThis question was posed to me in an internship interview.I want to ask this question from Methods of Polymerization topic in chapter Principles of Polymer Chemistry of Unit Processes
What is the other name of ‘Pearl’ polymerisation?(a) Emulsion(b) Heterogeneous(c) Suspension(d) None of the mentionedI had been asked this question in my homework.This intriguing question originated from Methods of Polymerization in chapter Principles of Polymer Chemistry of Unit Processes
What is the disadvantage of bulk polymerization?(a) High temperature(b) Heat control(c) Need catalyst(d) All of the mentionedI have been asked this question in an interview for internship.I need to ask this question from Methods of Polymerization topic in division Principles of Polymer Chemistry of Unit Processes
What are the factors of solution polymerisation?(a) Nature of solvent(b) Concentration(c) Temperature(d) All of the mentionedThis question was posed to me in homework.This interesting question is from Methods of Polymerization in chapter Principles of Polymer Chemistry of Unit Processes
During emulsion polymerisation particle size decreases.(a) True(b) FalseThis question was addressed to me during an online interview.This interesting question is from Methods of Polymerization topic in section Principles of Polymer Chemistry of Unit Processes
The tendency to decrease polymerization can be achieved by what?(a) Steric hindrance(b) Resonance stability(c) Steric hindrance & Resonance stability(d) None of the mentionedThe question was posed to me during an internship interview.The query is from Chemistry of Polymerization Reaction in division Principles of Polymer Chemistry of Unit Processes

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment