Heat Transfer Applications MCQ

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

• _______ is used to freeze food at a tremendously fast rate.
  ক

  Fluidized bed freezer

  খ

  Plate freezer

  গ

  Cryogenic freezers

  ঘ

  Belt freezer
• _______ is used to freeze particulate foods like peas, cut corn.
  ক

  Fluidized bed freezer

  খ

  Plate freezer

  গ

  Cryogenic freezers

  ঘ

  Belt freezer
• Freezer burn is a condition that occurs when frozen food has been damaged by ___________
  ক

  dehydration

  খ

  oxidation

  গ

  dehydration and oxidation

  ঘ

  dehydration and reduction
• ________ chillers are volume displacement units.
  ক

  Absorption

  খ

  Reciprocating

  গ

  Centrifugal

  ঘ

  Screw driven
• ________ chiller is powered by a heat source like steam and uses no moving parts.
  ক

  Absorption

  খ

  Reciprocating

  গ

  Centrifugal

  ঘ

  Screw driven
• ______ chillers are also called as centrifugal chiller type refrigeration systems.
  ক

  Low-pressure

  খ

  Low-temperature

  গ

  Low-velocity

  ঘ

  High-pressure
• __________ invented the quick freezing method in 1924.
  ক

  Clarence Birdseye

  খ

  Charles Chamberland

  গ

  Willis Carrier

  ঘ

  Clarence Birdseye
• What is the ideal chilled water temperature?
  ক

  42°F

  খ

  52°F

  গ

  49°F

  ঘ

  50°F
• _________ is used for cooling of products, mechanisms and factory machinery under control temperature.
  ক

  Chiller

  খ

  Ice

  গ

  Alcohol

  ঘ

  Ice or alcohol according to the product
• Who invented chillers?
  ক

  Louis Pasteur

  খ

  Charles Chamberland

  গ

  Willis Carrier

  ঘ

  Clarence Birdseye
• What are ideal conditions for evaporative cooling system?
  ক

  Hot and humid conditions

  খ

  Hot and dry conditions

  গ

  Cold and humid conditions

  ঘ

  Cold and dry conditions
• Dry ice is the solid form of _____________
  ক

  carbon dioxide

  খ

  Sulphur dioxide

  গ

  ammonium choride

  ঘ

  carbontetraoxide
• In the _____________, an electric current sent through a junction of two dissimilar materials results in either a heating or cooling of the junction.
  ক

  Peltier effect

  খ

  See-beck effect

  গ

  Joule effect

  ঘ

  Thomson effect
• The principle of flash cooling is achieved in _______________
  ক

  thermoelectric refrigeration

  খ

  steam-jet refrigeration

  গ

  evaporative cooling

  ঘ

  absorption refrigeration
• Are these statements about the natural refrigerants true? Statement 1: Propane and isobutene are natural refrigerants. Statement 2: These are produced from nature’s bio-chemical processes.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• _____________ freezers are used for deep freezing fish fillets.
  ক

  Air blast

  খ

  Slow type

  গ

  Normal

  ঘ

  Low velocity
• ___________ is the difference between the boiling point temperature of the refrigerant in the evaporator coil and the actual temperature of the refrigerant gas as it leaves the evaporator.
  ক

  Superheat

  খ

  Critical point

  গ

  Supercool

  ঘ

  Drastic point
• Modern refrigerators usually use a refrigerant called ______________
  ক

  HFC-134a

  খ

  CFC-134a

  গ

  HFC-1a

  ঘ

  HC-13a
• The first ice making machine used brewing was invented by ___________
  ক

  James Harrison

  খ

  Charles Chamberland

  গ

  Nicolas Appert

  ঘ

  Clarence Birdseye
• Who designed refrigerator?
  ক

  Oliver Evans

  খ

  Charles Chamberland

  গ

  Nicolas Appert

  ঘ

  Clarence Birdseye
• Does sterilization kill viruses?
  ক

  True

  খ

  False
• The sterilization of ________ is generally carried out by retorts.
  ক

  low carbohydrate foods

  খ

  low acid foods

  গ

  high acid foods

  ঘ

  medium acid foods
• _______ is used for sterilizing metallic devices like needles, scalpels.
  ক

  Flaming

  খ

  Incineration

  গ

  Hot air oven

  ঘ

  Steam
• _______ is the quickest way to sterilize solutions without heating.
  ক

  Filtration

  খ

  Chemical method of sterilization

  গ

  Steam Sterilization

  ঘ

  Chlorine dioxide gas
• Which of the following statements about sterilization are correct? Statement 1: Sterilization is achieved by a heat and chemicals alone. Statement 2: Ultraviolet radiation cannot be used for sterilization.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• Who developed steam sterilizer?
  ক

  Louis Pasteur

  খ

  Charles Chamberland

  গ

  Nicolas Appert

  ঘ

  Clarence Birdseye
• Are these statements about the sterilization true? Statement 1: Sterilization process consists of 3 phases. Statement 2:Phase 2 in sterilization process is known as holding phase.
  ক

  True, False

  খ

  True, True

  গ

  False, True

  ঘ

  False, False
• ____________ is used for sterilizing inoculating loops.
  ক

  Flaming

  খ

  Incineration

  গ

  Hot air oven

  ঘ

  Steam
• Which of the following is target microbe in commercial sterilization?
  ক

  Pseudomonas aeruginosa

  খ

  Bacillus anthracis

  গ

  Salmonella typhi

  ঘ

  Clostridium botulinum
• Where should a sterilization indicator placed in an autoclave?
  ক

  At the center

  খ

  Close to lid of the autoclave

  গ

  Sides of the autoclave

  ঘ

  Anywhere inside the autoclave