EASY
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What is the pH value of pure water?

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Important Questions on Electrochemistry

HARD
Define corrosion. Write two preventions from corrosion.
MEDIUM
Out of zinc and tin, whose coating is better to protect iron objects?
MEDIUM
Corrosion is an electrochemical phenomenon. Explain.
MEDIUM
Rusting of iron is said to be an electrochemical phenomenon. Give reason for this.
HARD
What is corrosion? Explain its mechanism and write any two measures of its prevention.
EASY
Write two conditions necessary for the corrosion to occur. 
HARD

Define the term: Corrosion
Write two applications of electrochernical series.

HARD

Match the following:

Group-A Group-B
(i) Corrosion (a) Lanthanides
(ii) Gold sol (b) Used in treatment of cancer

(iii) Radon

(c) Purple of cassius
(iv) f-block elements

(d) Barbituric acid

(v) Tranquilizers (e) Hydrated ferric oxide.

 

MEDIUM
What is corrosion? Explain two factors which affect corrosion.
EASY
Iron scraps are advisable and advantageous than zinc scraps for reducing the low grade copper ores. Why?
HARD
To protect iron against corrosion the most durable metal plating on it is?
EASY
Blocks of magnesium are fixed to the bottom of a ship to
EASY
What is the chemical composition of rust?