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Mechanical Engineering
Corrosion Engineering
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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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