M6 Materials And Hardware Sub-Module No 4(Quiz No:1)

Corrosion

Quiz

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1. Corrosion is the --------- deterioration of a metal because of its chemical reaction with the surrounding environment ?
   1.   Electro chemical
   2.   Mechanical
   3.   Chemical
2. The type and aggressiveness of the corrosion prevention and control program depends on the operational --------- of the aircraft ?
   1.   Requirement
   2.   Environment
   3.   Material
3. The ------------ of water depends on the type and quantity of dissolved mineral and organic impurities and dissolved gasses in the water ?
   1.   Colour
   2.   Properties
   3.   Corrosiveness
4. Microbial growth must be removed completely to avoid ---------?
   1.   Oxidation
   2.   Corrosion
   3.   Grains
5. What occurs when two different metals have physical or electrical contact with each other ?
   1.   Stress Corrosion
   2.   Microbial corrosion
   3.   Galvanic corrosion
6. Pure’ aluminium, stainless steel and copper have………. To surface corrosion than aluminium alloy, magnesium alloy and non-stainless steels ?
   1.   More Resistance
   2.   Less Resistance
   3.   Equal Resistance
7. It is corrosion of metals in a metal-to-metal joint, corrosion at the edge of a joint even though the joined metals are identical ?
   1.   Stress Corrosion
   2.   Crevice Corrosion
   3.   Surface Corrosion
8. This corrosion often stems from the screening effect of silt, scale or corrosion deposits that reduce the oxygen concentration at local points on the metal surface ?
   1.   Surface Corrosion
   2.   Fretting Corrosion
   3.   Pitting Corrosion
9. Accelerated low-water corrosion (ALWC) is a particularly aggressive form of --------that affects steel piles in seawater near the low water tide mark ?
   1.   Microbial corrosion
   2.   Galvanic corrosion
   3.   Stress Corrosion
10. How many conditions must exist before electro chemical corrosion can occur ?
    1.   Two
    2.   Three
    3.   Four