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________ can be caused by the collection of loose debris over pump suction screens in sumps and growth of algae in sunlit areas
Fouling
When oxygen reacts with iron it forms iron oxide which is a porous material:
True
Iron scale will have which of the following color:
Orange Color
Which of the following not the reason for causes of corrosion:
Nitrogen
Which of the following reduces water flow and heat transfer:
Both Fouling and Scaling
Oxidation of which of the following metal will not form inert metal oxide layer:
Iron
The summer wind velocities are higher than those in the winter:
False
Which of the following causes accelerate galvanic corrosion
Both the options are correct
As the temperature increases solubility of salts of scales will:
Decreases
When Carbon dioxide dissolves in the water ______ is formed
Carbonic acid
Most scales formed are predominantly contains which of the following:
Carbonates
If the airstream meets an obstruction of any kind, such as house or ventilator then:
Vacuum is formed
Hardness minerals are the water soluble compounds of which of the following:
Calcium and Magnesium
Which of the following cause electrolytic corrosion:
Stray electrical currents
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