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MCQs

Total Questions : 1977 | Page 7 of 198 pages
Question 61. __________ moulding process can not be used for thermoplastic plastics.
  1.    Compression
  2.    Extrusion
  3.    Injection
  4.    None of these
 Discuss Question
Answer: Option C. -> Injection
Question 62. 100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with
  1.    Cast iron and high silicon iron
  2.    Mild steel and stainless steel
  3.    Aluminium, tin and rubber
  4.    Teflon, glass and porcelain
 Discuss Question
Answer: Option C. -> Aluminium, tin and rubber
Question 63. Carbon tetrachloride can be stored in a storage vessel made of
  1.    High silicon iron (14% Si)
  2.    Tin
  3.    Stainless steel
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 64. Mercury is transported in metal containers made of
  1.    Aluminium
  2.    Iron
  3.    Lead
  4.    Nickel
 Discuss Question
Answer: Option B. -> Iron
Question 65. Mercury is transported in metal containers made of
  1.    Aluminium
  2.    Iron
  3.    Lead
  4.    Nickel
 Discuss Question
Answer: Option B. -> Iron
Question 66. Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%)?
  1.    Armature of small motors/generators
  2.    Generators and small motors
  3.    Induction motors
  4.    High frequency transformers
 Discuss Question
Answer: Option D. -> High frequency transformers
Question 67. Nickel made/clad equipments are suitable for handling
  1.    Ammonia (both aqueous & anhydrous)
  2.    Fruit juices, milk & its products and caustic soda solution
  3.    Nitric acid & hydrochloric acid (conc)
  4.    Sulphuric acid (conc)
 Discuss Question
Answer: Option B. -> Fruit juices, milk & its products and caustic soda solution
Question 68. Slow and progressive deformation of a material with time under constant stress is called
  1.    Creep
  2.    Erosion
  3.    Resilience
  4.    None of these
 Discuss Question
Answer: Option A. -> Creep
Question 69. Which of the following is not used as the ceramic material in 'cermets'?
  1.    Silicides
  2.    Oxides
  3.    Carbides
  4.    Nitrides
 Discuss Question
Answer: Option D. -> Nitrides
Question 70. The most resistant material to alkaline corrosion is
  1.    Duriron
  2.    Nickel
  3.    Aluminium
  4.    Karbate
 Discuss Question
Answer: Option B. -> Nickel

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