Which of the following will raise the rate of corrosion of metals ? 

a) presence of impurities

b)presence of electrolyte 

c) presence of CO_2

d) presence of argon 

  • Option 1)

    a,b

  • Option 2)

    a,b,c

  • Option 3)

    b,c

  • Option 4)

    b,d

 

Answers (1)

As we have learned

Factor affecting corrosion -

1. Reactivity of metals

2. Presence of moisture and atmospheric gases like CO2 SO2 etc.

3. Presence of impurity

4. Presence of electrolyte

5. Strains in the metal

-

 

a) Presence of impurities  increases the speed of rate of oxidation 

b) electrolyte raise the rate of corrosion by increasing the rate of oxidation 

c) CO_2  act as electrolyte 

d)Ar is inert and doesn't react with metals  

 

 

 


Option 1)

a,b

Option 2)

a,b,c

Option 3)

b,c

Option 4)

b,d

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