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MCQs with answers - Plastic Processing Operations-PP-1

This set of questions & answers (MCQs) for improving practices "Plastic products, Plastic materials and manufacturing process".

some set of questions & answers (MCQs) for improving practices in plastic field. It helps examination and interview practice every day.

1) What are plastics?

  • a) Plastics is a petrochemicals product
  • b) Plastics are polymer
  • c) Plastics are non-biodegradables
  • d)All of these above
VIEW ANSWER

Ans: (d) plastics are petrochemical products, which is non-biodegradable. All plastics are polymers. 

2) Why plastics are non-biodegradable?

  • a) This is synthetic polymers
  • b) This is natural polymers
  • c) Both a & b
  • d) None of these
VIEW ANSWER

 Ans: (a) synthetic polymers are synthesized in laboratory so this polymer plastics are not ecofriendly; these are non-biodegradables plastics. 

3) All plastics are polymer. (True/False)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics are synthetic polymers. All plastics are polymers but all polymers are not plastics.

4) Plastics are recyclable material. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics are thermos-softening polymers, it is re-melted and re molded by mechanical machine so plastics are recyclable.

5) Which is the plastic material?

  • a) Thermoplastic
  • b) Thermosetting
  • c) Both a) &b)
  • d) None of the above
VIEW ANSWER

Ans: (c) Plastics are manly two types thermoplastics and thermosetting plastics.

6) Which application we are used plastics products.

  • a) Household application
  • b) Medical application
  • c) Agriculture application
  • d) All of the above
VIEW ANSWER

Ans: (d) All of the above

7) Plastics are good corrosion resistance. (True/ False)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics has good weather resistance property.

8) Plastics are excellent water resistance capacity. (True/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics has good water/chemicals/oxidation reaction resistance property.

9) Plastics are good chemical resistance capacity. (true/false

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics has good anti oxidation property.

10) Plastics are excellent insulator. (true/ false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics do not have free electrons available for conducting heat and electricity. Hence plastics are using electrical application.

11) Plastics are used in engineering application. (true/ false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; engineering plastics are capable of withstanding high loadings for a period time at of time at elevated temperature, good mechanical, good electrical and good dimensional stability.

12) Why plastics are recyclable material?

  • a) It easily reshaped
  • b) Tough to recycling property
  • c) Easy to elongation
  • d) None of these
VIEW ANSWER

Ans: (a) plastics are easy to melt and easy to reshape repeatedly.

13) Plastics are good processability. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; After applying heat plastics ae melt and after cooling it’s reshape easily so it’s processability is too good to other materials.

14) Plastics are light weight but it’s strong material. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; Due to their molecular structure, molecular arrangement and it’s low density.

15) Plastics are using aerospace application. (true/False)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; plastics are good heat, weather resistance and good mechanical property.

16) Plastics are mainly synthetic polymer. It is manifesting laboratory by chemical polymerizations process. (true/False)

  • a) True
  • b) False
VIEW ANSWER

Ans: (a) true; Mainly plastics are synthesized in laboratory for improving plastics properties.

17) Plastics are biodegradable material. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (b) False; plastics are non-biodegradable material due to its molecular arrangements are synthesize in laboratory. 

18) Which material are example of plastics?

  • a) PVDF
  • b) ABS
  • c) Epoxy Resin
  • d) All of the above
VIEW ANSWER

Ans: (d) All of the above

19) How is the father of plastics?

  • a) Ernest Rutherford
  • b) Leo Hendrik Baekeland
  • c) Hermann Staudinger
  • d) John Dalton
VIEW ANSWER

Ans: (b) Leo Hendrik Baekeland, a Belgian-American chemist and inventor.

20) Plastics are only using household application. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (b) False; due to improving technology plastics are used different applications. 

21) Which raw material is used for manufacturing plastics material?

  • a) Coal
  • b) Natural gas
  • c) Crude oil
  • d) All of the above
VIEW ANSWER

Ans: (d) All of the above.

22) Cellulose raw material is not used for manufacturing plastics material. (true/False)

  • a) True
  • b) False
VIEW ANSWER

Ans: (b) False; Cellulose, coal, natural gas and crude oil are used for manufacturing plastics material.

23) Why plastics are petrochemicals products?

  • a) Plastics are made by Petroliam materials.
  • b) Plastics are made by wood
  • c) Plastics are made by rubber
  • d) None of these
VIEW ANSWER

Ans: (a) due to Plastics are made by Petroliam materials.

24) Which of the following materials is not a Plastics?

  • a) HDPE
  • b) PS
  • c) EPOXY
  • d) ECO
VIEW ANSWER

Ans: (a) ECO, Epichlorohydrin rubber this material not a plastic.

25) Plastics are conduct at above room temperature only. (true/false)

  • a) True
  • b) False
VIEW ANSWER

Ans: (b) False; Plastics are generally poor conductors of heat and electricity at all temperatures, including room temperature.

26) Which of the following is not a thermoset material?

  • a) Cellulose
  • b) Casein
  • c) Melamine formaldehyde
  • d) Phenol formaldehyde
VIEW ANSWER

Ans: (a) Cellulose; because Cellulose is a thermoplastics material.

27) Which of the following is a thermoplastic material?

  • a) Poly sulfone
  • b) Uria formaldehyde
  • c) Polyurethane
  • d) Phenolic
VIEW ANSWER

Ans: (a) PSU (Poly sulfone); this material is thermoplastics.

28) In which solvent is used for thermoplastics are soluble?

  • a) Only water
  • b) Polar solvent
  • c) Organic solvent
  • d) Only in semi organic solvent
VIEW ANSWER

Ans: (c) Organic solvent; Thermoplastics are generally soluble in organic solvents.

29) Why Additives are added in plastic row material?

  • a) For improving its color
  • b) For improving its flexibility only
  • c) For improving its water resistance
  • d) For enhance its properties and durability
VIEW ANSWER

Ans: (d) For enhance its properties and durability

30) Which of the following is a property of plastics?

  • a) Plastics are organics in nature
  • b) Plastics are good conductor
  • c) Plastics are ecofriendly in nature
  • d) Plastics are not recyclable
VIEW ANSWER

Ans: (a) Plastics are organics in nature; due to plastics are typically made from organic polymers.

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