Mineral Dressing MCQ

Test your knowledge with important Mineral Dressing MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Mineral Dressing MCQs at Bissoy

• The capacity of ‘screen’ depends on which of the following factors?
  ক

  Size of ore

  খ

  Area of screening surfaces

  গ

  Shape of screen

  ঘ

  Weight of particle
• What is the basis of separation of ‘screening’ process?
  ক

  Particle size

  খ

  Particle weight

  গ

  Particle mass

  ঘ

  Particle shape
• A crude method in which the coarser particles are selected from an orebody is called ______
  ক

  screening

  খ

  sieving

  গ

  handpicking

  ঘ

  crushing
• Which of the following is the most widely used sizing technique in the laboratory?
  ক

  Grinding

  খ

  Crushing

  গ

  Gravity separation

  ঘ

  Sieving
• In ore beneficiation method, when mineral particles are subjected to force fields such as magnetic, gravitation and electrical, their behaviour depends on their size.
  ক

  True

  খ

  False
• Which of the following forces does not act on ore particles in a ball mill?
  ক

  Cataracting

  খ

  Tension force

  গ

  Cascading

  ঘ

  Frictional forces
• Grinding is carried out mostly in which of the following machines?
  ক

  Ball mill

  খ

  Jaw crushers

  গ

  Gyratory crushers

  ঘ

  Rolls
• What is the maximum size, approximately, to which comminution of ore is done?
  ক

  10 mm

  খ

  8 mm

  গ

  6 mm

  ঘ

  4 mm
• The majority of concentration processes require particles of which size?
  ক

  Large-sized particles

  খ

  Huge lumps

  গ

  Small-sized particles

  ঘ

  Medium-sized lumps
• In liberation by size reduction process, for the abundant phase to be freed, the particles must be ______
  ক

  coarser in composition than the original grain size

  খ

  equal to the size of the original grain size

  গ

  greater than the size of the original grain size

  ঘ

  finer in composition than the original grain size
• The particles of an ore consisting of two or more minerals are known as locked particles.
  ক

  True

  খ

  False
• The percentage of the mineral occurring as free particles to the total of mineral occurring as free and locked forms is called ______
  ক

  degree of locking

  খ

  degree of liberation

  গ

  degree of hardness

  ঘ

  degree of reduction
• Which process liberate valuable components by detaching dissimilar mineral particles from each other?
  ক

  Comminution

  খ

  Concentration

  গ

  Sizing

  ঘ

  Coagulation
• Raw materials are processed to get marketable products and waste by some means without destroying the physical and chemical properties of the minerals. The process is known as _____
  ক

  oxidation

  খ

  reduction

  গ

  mineral dressing

  ঘ

  ore dressing