Applied Chemistry MCQ

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

• The process of coating iron or steel sheet with a thin coat of zinc to prevent iron from rusting is called ____________
  ক

  Tinning

  খ

  Galvanisation

  গ

  Metal cladding

  ঘ

  Electroplating
• The old paint coating cannot be removed by __________
  ক

  Soaps

  খ

  Caustic soda

  গ

  Trisodium phosphate

  ঘ

  Sulphuric acid
• In pickling and etching _________ acids are used.
  ক

  Sulphuric acid

  খ

  Hypo chlorous acid

  গ

  Phosphoric acid

  ঘ

  Phosphorous acid
• During the sand blasting process, the workers are affected by the disease called _________
  ক

  Silicosis

  খ

  Chicken guinea

  গ

  Blue baby syndrome

  ঘ

  Flourosis
• Tinning is the example of __________
  ক

  Anodic coatings

  খ

  Cathodic coatings

  গ

  Neither anode nor cathode

  ঘ

  Both anode and cathode
• In anodic coatings, the coating metals possess __________ reduction potential than base metal.
  ক

  Higher

  খ

  Lower

  গ

  Zero

  ঘ

  Cannot be said
• The cleaning methods before applying the protective coating are of _________ types.
  ক

  3

  খ

  4

  গ

  5

  ঘ

  6
• In sand blasting, the atmospheric pressure is about __________
  ক

  25-100atm

  খ

  50-100atm

  গ

  70-100atm

  ঘ

  100-250atm
• The oxidation resistance is given by the protective coatings.
  ক

  True

  খ

  False
• The protective coatings are used to ___________
  ক

  Corrode the metal

  খ

  Prevent from corrosion

  গ

  Increase the corrosion

  ঘ

  Slightly increase the corrosion
• Dry corrosion takes place in __________
  ক

  Homogeneous solutions

  খ

  Heterogeneous solutions

  গ

  Neither homogeneous nor heterogeneous

  ঘ

  Both homogeneous and heterogeneous solutions
• Corrosion along the grain boundaries is called as __________
  ক

  Stress corrosion

  খ

  Inter granular corrosion

  গ

  Water line corrosion

  ঘ

  Pitting corrosion
• Corrosion is uniform in __________
  ক

  Dry corrosion

  খ

  Wet corrosion

  গ

  Pitting corrosion

  ঘ

  Water line corrosion
• Which of the following comes under the wet corrosion?
  ক

  Concentration cell corrosion

  খ

  Oxidation corrosion

  গ

  Liquid metal corrosion

  ঘ

  Corrosion by other gases
• Corrosion due to difference in water level is __________
  ক

  Soil corrosion

  খ

  Oxidation corrosion

  গ

  Pitting corrosion

  ঘ

  Water line corrosion
• Corrosion due to the flow of the _________ between the cathodic and anodic areas is called as the electro chemical corrosion by evolution of hydrogen ad absorption of oxygen.
  ক

  Electron current

  খ

  Proton current

  গ

  Ion current

  ঘ

  Neutron current
• Corrosion due to the formation of cavities around the metal is called as the ___________
  ক

  Pitting corrosion

  খ

  Soil corrosion

  গ

  Water line corrosion

  ঘ

  Galvanic corrosion
• Corrosion due to the corrosiveness of the soil is called as ___________
  ক

  Soil corrosion

  খ

  Oxidation corrosion

  গ

  Galvanic corrosion

  ঘ

  Concentration cell corrosion
• Wet corrosion is also called as ____________
  ক

  Chemical cell

  খ

  Electro chemical cell

  গ

  Oxidation reaction

  ঘ

  Liquid metal corrosion
• Corrosion between the dissimilar metals is called as __________
  ক

  Galvanic corrosion

  খ

  Dry corrosion

  গ

  Oxidation corrosion

  ঘ

  Concentration cell corrosion
• Chemical action of flowing liquid metal at high temperatures is __________
  ক

  Liquid metal corrosion

  খ

  Corrosion by other gases

  গ

  Oxidation corrosion

  ঘ

  Wet corrosion
• The rusting iron is the __________
  ক

  Oxidation corrosion

  খ

  Liquid metal corrosion

  গ

  Wet corrosion

  ঘ

  Corrosion by other gases
• Anhydrous inorganic liquid metal surface in absence of moisture undergoes ___________
  ক

  Wet corrosion

  খ

  Dry corrosion

  গ

  Galvanic corrosion

  ঘ

  Pitting corrosion
• Dry corrosion is also called as _________
  ক

  Chemical corrosion

  খ

  Electrochemical corrosion

  গ

  Wet corrosion

  ঘ

  Oxidation corrosion
• The emf of the cathode in the zinc-air batteries is __________
  ক

  0.1V

  খ

  0.2V

  গ

  0.3V

  ঘ

  0.4V
• The emf of the anode in zinc-air batteries is ___________
  ক

  -1V

  খ

  -1.25V

  গ

  1V

  ঘ

  1.25V
• The drawback of this battery is the working voltage of battery is _________ due to the internal losses.
  ক

  Higher

  খ

  Lower

  গ

  Moderate

  ঘ

  Not considerable
• In zinc-air cells are composed of three parts of zinc used as ___________
  ক

  Anode

  খ

  Cathode

  গ

  Based on the half cell

  ঘ

  Can’t be said
• The advantages of the nickel metal hydrated batteries are having _________ more energy than the nickel cadmium batteries.
  ক

  100%

  খ

  50%

  গ

  75%

  ঘ

  25%
• Nickel metal hydrated batteries having the low cell voltage of __________
  ক

  1V

  খ

  1.2V

  গ

  1.3V

  ঘ

  1.4V