Exam preparation MCQs with answers

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Monel alloy is____________________?
  • (A)  The costliest of all the alloys of nickel
  • (B)  Not suitable for making kitchen utensils
  • (C)  Used for making steam valves and turbine blades as it resists steam attack at high temperature
  • (D)  Not used in cast and wrought forms
Cementite is________________?
  • (A)  Fe3C chemically
  • (B)  A compound of carbon and iron
  • (C)  Characterised by an orthorhombic crystal structure
  • (D)  All
Kel-F is a material, which is________________?
  • (A)  Chemically known as Polychlorotrifluoroethylene (PTFE)
  • (B)  Having excellent chemical & high temperature resistance (upto 200°C)
  • (C)  Having elastomeric properties
  • (D)  All
Zinc is not used__________________?
  • (A)  For producing zinc base die casting alloys
  • (B)  In its oxide form as pigments
  • (C)  As anode for corrosion prevention in boiler
  • (D)  As an alloying element in various bronzes