Chemical Engineering Mcqs

Pick out the correct statement ?
  • (A)  A fat is converted into oil by its hydrogenation
  • (B)  There is no difference between a fat and an oil so far as its physical properties are concerned
  • (C)  All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
  • (D)  Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Pick out the wrong statement?
  • (A)  Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action
  • (B)  Soap powder is prepared by mixing soap with hydrated sodium carbonate
  • (C)  Detergents differ from soaps in their action in hard water
  • (D)  Tarnish inhibitor (
  • (E)  g., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc
Blowdown in a cooling tower____________________?
  • (A)  Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities
  • (B)  Increases the scale forming tendencies of water
  • (C)  Is undesirable
  • (D)  All