HARD
Earn 100

Write the chemical equation for all the steps involved in the rusting of iron. Explain why does alkaline medium inhibits rusting of iron?

Important Questions on Electrochemistry

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?
MEDIUM
Corrosion is an electrochemical phenomenon. Explain.
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.

 

HARD
What is corrosion? Explain its mechanism and write any two measures of its prevention.
MEDIUM
Rusting of iron is said to be an electrochemical phenomenon. Give reason for this.
MEDIUM
What is corrosion? Explain two factors which affect corrosion.
MEDIUM
Out of zinc and tin, whose coating is better to protect iron objects?
HARD

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

HARD
Define corrosion. Write two preventions from corrosion.
EASY
Write two conditions necessary for the corrosion to occur. 
EASY
Blocks of magnesium are fixed to the bottom of a ship to
EASY
Several blocks of magnesium are fixed to the bottom of a ship to
EASY
The process of Zinc -plating on iron sheet is known as
EASY

The process of zinc-plating on iron sheet is known as