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MCQs

Total Questions : 74 | Page 4 of 8 pages
Question 31. A polymer having rubber-like properties is known as _______
  1.    Thermoset
  2.    Thermoplastic
  3.    Elastomer
  4.    Polyisoprene
 Discuss Question
Answer: Option C. -> Elastomer
Answer: (c).Elastomer
Question 32. Melamine formaldehyde can be used at temperatures up to _____
  1.    65°C
  2.    95°C
  3.    150°C
  4.    240°C
 Discuss Question
Answer: Option B. -> 95°C
Answer: (b).95°C
Question 33. Which plastic material does a combination of dibasic acids and polyhydric alcohols give?
  1.    Polyester
  2.    Polyurethane
  3.    Epoxide
  4.    Phenolic
 Discuss Question
Answer: Option A. -> Polyester
Answer: (a).Polyester
Question 34. Polyformaldehyde has a good stability up to _____
  1.    50°C
  2.    100°C
  3.    150°C
  4.    250°C
 Discuss Question
Answer: Option C. -> 150°C
Answer: (c).150°C
Question 35. Which of the following is used as an adhesive?
  1.    Epoxide
  2.    Polyurethane
  3.    Polyester
  4.    Phenol formaldehyde
 Discuss Question
Answer: Option A. -> Epoxide
Answer: (a).Epoxide
Question 36. Paraplex is a common trade name for which thermoset?
  1.    Epoxide
  2.    Polyester
  3.    Polyurethane
  4.    Urea formaldehyde
 Discuss Question
Answer: Option B. -> Polyester
Answer: (b).Polyester
Question 37. Which of the following is a type of particle-reinforced composites?
  1.    Continuous
  2.    Laminates
  3.    Dispersion-strengthened
  4.    Sandwich panels
 Discuss Question
Answer: Option C. -> Dispersion-strengthened
Answer: (c).Dispersion-strengthened
Question 38. Urea formaldehyde shares properties and applications with which other thermoset?
  1.    Phenol formaldehyde
  2.    Polyurethane
  3.    Epoxide
  4.    Melamine formaldehyde
 Discuss Question
Answer: Option D. -> Melamine formaldehyde
Answer: (d).Melamine formaldehyde
Question 39. Cermet is a _______ composite.
  1.    particle-reinforced
  2.    fiber-reinforced
  3.    structural
  4.    laminar
 Discuss Question
Answer: Option A. -> particle-reinforced
Answer: (a).particle-reinforced
Question 40. Which of the following is not a property of thermoplastics?
  1.    Recyclable
  2.    Soft and weak
  3.    Easy to mold
  4.    Can be used at high temperatures
 Discuss Question
Answer: Option D. -> Can be used at high temperatures
Answer: (d).Can be used at high temperatures

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