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MCQs

Total Questions : 74 | Page 7 of 8 pages
Question 61. Which polymer additives are added to improve flexibility?
  1.    Lubricants
  2.    Plasticizers
  3.    Stabilizers
  4.    Reinforcements
 Discuss Question
Answer: Option B. -> Plasticizers
Answer: (b).Plasticizers
Question 62. Wood flour and silica flour are examples of ______
  1.    Fillers
  2.    Plasticizers
  3.    Stabilizers
  4.    Lubricants
 Discuss Question
Answer: Option A. -> Fillers
Answer: (a).Fillers
Question 63. What is the rate of growth of chains in condensation polymerization?
  1.    10⁻² to 10² seconds
  2.    10 minutes
  3.    Hours or days
  4.    Weeks
 Discuss Question
Answer: Option C. -> Hours or days
Answer: (c).Hours or days
Question 64. Addition of different types of monomers to form polymer chains is known as _______
  1.    Chain reaction polymerization
  2.    Copolymerization
  3.    Combination
  4.    Disproportionation
 Discuss Question
Answer: Option B. -> Copolymerization
Answer: (b).Copolymerization
Question 65. Which of the following is a property of ceramics?
  1.    Low strength
  2.    Low melting point
  3.    Resistant to corrosion
  4.    Bad insulation
 Discuss Question
Answer: Option C. -> Resistant to corrosion
Answer: (c).Resistant to corrosion
Question 66. Porcelain is a type of ______ ceramic.
  1.    whiteware
  2.    stone
  3.    abrasive
  4.    cement
 Discuss Question
Answer: Option A. -> whiteware
Answer: (a).whiteware
Question 67. Diamond and corundum are examples of _____ ceramics.
  1.    glass
  2.    stone
  3.    refractories
  4.    abrasives
 Discuss Question
Answer: Option D. -> abrasives
Answer: (d).abrasives
Question 68. Which of the following is not a step in making ceramics?
  1.    Powder pressing
  2.    Sintering
  3.    Alloying
  4.    Vitrification
 Discuss Question
Answer: Option C. -> Alloying
Answer: (c).Alloying
Question 69. Which material is commonly used in electronic devices?
  1.    Alumina
  2.    Titania
  3.    Silica
  4.    Germanium
 Discuss Question
Answer: Option D. -> Germanium
Answer: (d).Germanium
Question 70. How much of a stabilizing oxide is present in partially stabilized zirconium?
  1.    5%
  2.    10%
  3.    18%
  4.    24%
 Discuss Question
Answer: Option A. -> 5%
Answer: (a).5%

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