Exam preparation MCQs with answers

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Choose the wrong statement?
  • (A)  Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force
  • (B)  Viscosity is due primarily to interaction between fluid molecules
  • (C)  Viscosity of liquids decreases with in-crease in temperature
  • (D)  Viscosity of liquids is appreciably affected by change in pressure
  • (E)  Viscosity is expressed as poise, stoke, or saybolt seconds
Coke is produced by__________________?
  • (A)  pulverising coal in inert atmosphere
  • (B)  heating wood in a limited supply of air at temperatures below 300GC
  • (C)  strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
  • (D)  binding the pulverised coal into brick-etts
  • (E)  enriching carbon in the coal
For water, at pressures below atmospheric___________________?
  • (A)  melting point rises slightly and boiling point drops markedly
  • (B)  melting point rises markedly and boiling point drops markedly
  • (C)  melting point drops slightly and boiling point drops markedly
  • (D)  melting point drops slightly and boiling point drops slightly
  • (E)  none of the above
Stoichiometric quantity of air is the___________________?
  • (A)  air present in atmosphere at NTP conditions
  • (B)  air required for complete combustion of fuel with no excess air
  • (C)  air required for optimum combustion so as to have reasonable excess air
  • (D)  air required to convert CO into C02
  • (E)  air required to form an explosive mixture