Pulp Bleaching MCQ

Test your knowledge with important Pulp Bleaching MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Pulp Bleaching MCQs on Bissoy. Bissoy App

• Higher bleaching stages are carried out in consisitencies of range____________
  ক

  8-10

  খ

  10-20

  গ

  15-20

  ঘ

  3-10
• Bleaching stages are carried out consistencies for pulp bleaching are from _________%.
  ক

  8-10

  খ

  3-20

  গ

  3-10

  ঘ

  4-15
• _________ pulps are not susceptible to colour reversion.
  ক

  Chemical

  খ

  Mechanical

  গ

  Dithionite

  ঘ

  Hydrousulfite
• _________ pulps are susceptible to colour reversion.
  ক

  Chemical

  খ

  Mechanical

  গ

  Dithionite

  ঘ

  Hydrousulfite
• _________ is the yellowness of pulps on exposure to air, light, heat, and fungi due to modification of residual lignin forming chromophores.
  ক

  Colour reversion

  খ

  Colour addition

  গ

  Oxidation

  ঘ

  Exposure
• Brightness is a term used to describe the _________ of pulp or paper, on a scale from 0 to 100.
  ক

  Whiteness distribution

  খ

  Whitness obstructivness

  গ

  Coquettes

  ঘ

  Bleach
• Bleaching mechanical pulps is called _________ to distinguish it from bleaching of chemical pulps.
  ক

  Brightening

  খ

  Bloating

  গ

  Blackening

  ঘ

  Branding
• _________ removal in chemical pulps leads to higher fiber-fiber bonding strength in paper, but the strong chemical pulps decrement in the length of cellulose molecules, resulting in weaker fibers.
  ক

  Softwood

  খ

  Hardwood

  গ

  Lignin

  ঘ

  Pulp
• Bleaching of chemical pulps is achieved by lignin addition.
  ক

  True

  খ

  False