Q.1
What is the corrosion of iron called?
  • Rusting
  • Swelling
  • Blackening
  • melting
Q.2
Select the ferrous alloys
  • mild steel
  • cast iron
  • aluminium
  • Both A & B
Q.3
Which two properties are for lead
  • corrosion resistant
  • soft
  • easily rusts
  • Both A & B
Q.4
What applications are stainless steel used for
  • Kitchen equipment
  • Cutlery
  • Ladders
  • Both A & B
Q.5
Which of these are electrical conductors
  • brass
  • sea water
  • copper
  • All of above
Q.6
Which definition best fits cast iron
  • very strong, if compressed it's brittle and not malleable
  • lightweight, corrosion resistant and ductile
  • malleable, corrosion resistant and soft
  • None of these
Q.7
Which definition best fits solder
  • very strong, brittle and not malleable
  • rusts easily, not easy to work with and inexpensive
  • malleable, corrosion resistant and soft
  • None of these
Q.8
Ferrous metals contain iron so most of them are .......
  • corrosion resistant
  • magnetic
  • lightweight
  • All of above
Q.9
Whats the definition of an alloy?
  • is a combination of two metals
  • is a combination of metals and another element
  • is a combination of two non metals
  • All of above
Q.10
Non-ferrous metals mean that it ......
  • contains iron
  • doesn't contain iron
Q.11
Select the non-ferrous metals
  • brass
  • copper
  • solder
  • All of above
Q.12
What term is used to describe a polymer that has a rubber like properties?
  • Elastomer
  • Plastics
  • Copolymers
  • Polymers
Q.13
Galvanized steel are steel product coated with
  • Zinc
  • Iron
  • Silicon
  • Boron
Q.14
What refers to a shape achieved by allowing a liquid to solidify in a mold?
  • Casting
  • Scalding
  • Scolding
  • Fading
Q.15
Conductivity in the ionic current path or the electronic current path can affect the corrosion rate.
  • true
  • false
Q.16
Most organic coatings on metallic surfaces serve to inhibit the formation of an electronic path
  • True
  • false
Q.17
If the same amount of electrical charge, Q, is passed through several electrodes, the masses of the substances reacting at the electrodes are in direct ratio to their molar masses
  • True
  • false
Q.18
What refers to a metal combined with one or more other elements?
  • Metal
  • Alloy
  • Metaloy
  • Gas
Q.19
Corrosion current density is the measure of most practical significance and Interest in design
  • true
  • false
Q.20
The use of oxygen scavengers in the feed water to boiler affects the anodic reaction rate
  • True
  • false
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