Crystallization-1 MCQ

Test your knowledge with important Crystallization-1 MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Crystallization-1 MCQs at Bissoy

• Which of the following is true about scraped surface crystallizers?
  ক

  Expansion of capacity is easy

  খ

  Can be used for a wide range of temperature differences

  গ

  Smaller size, less installation cost

  ঘ

  All of the mentioned
• Scraped surface crystallizers can be used for viscous fluids up to 10000 cp.
  ক

  True

  খ

  False
• Statement 1: Batch crystallizers are used for jaggery. Statement 2: Particle size is controlled by stirring and scraping the concentrate from the vessel for better heat transfer.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Statement 1: Batch crystallizers use the concept of cooling of hot solution/magma. Statement 2: Control of particle size is poor in a batch crystallizer.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Statement 1: Batch crystallizers are used if the throughput is high. Statement 2: The operating cost of batch crystallizers is high.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Which of the following facilitates crystallization?
  ক

  Hot concentrated solution is cooled for crystals to form

  খ

  Solution is concentrated by evaporation

  গ

  Adiabatic evaporation and cooling

  ঘ

  All of the mentioned
• Parameters affecting crystallization are ____________
  ক

  Agitator speed

  খ

  Population density

  গ

  Purity of solution

  ঘ

  All of the mentioned
• The ratio of concentration of a super saturated solution to a saturated solution is denoted by α’ which is stated by the Kelvin equation. How is it related to the crystal size and interfacial tension between solid and liquid?
  ক

  Directly, indirectly

  খ

  Indirectly, directly

  গ

  Directly, directly

  ঘ

  Indirectly, indirectly
• Statement 1: Smaller particles dissolve as they have a larger surface area and larger particles grow. Statement 2: The above process is called Ostwald ripening.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Statement 1: Crystallization is both a mass and heat transfer operation. Statement 2: The crystals and mother liquor obtained from a crystallizer are called _____
  ক

  True, nucleation

  খ

  False, solid residue

  গ

  True, magma

  ঘ

  False, crystal growth
• Which of the following tells the significance of crystallization in food processing?
  ক

  Consistency of food emulsions

  খ

  A good feel of food inside the mouth

  গ

  The physical stability of food

  ঘ

  All of the mentioned
• Statement 1: Solid food items containing water molecules are more soluble as the temperature increases. Statement 2: This growth takes place in steps.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Statement 1: The solubility of NaCl increases with the increase in temperature. Statement 2: Crystal formation is hindered by nucleation taking place on the crystal surface.
  ক

  True, False

  খ

  True, True

  গ

  False, False

  ঘ

  False, True
• Which of the following is NOT an important criteria for crystal formation?
  ক

  Caking characteristics of the crystal

  খ

  Moisture content

  গ

  Shape

  ঘ

  None of the mentioned
• Celinium Sulphate is an exception of the solubility curve. When the temperature is increased, its solubility decreases.
  ক

  True

  খ

  False