State the property of metal being utilised in the following:

Use of metal	Property
Zinc in Galvanization
Aluminium in Thermite welding

An aqueous solution of Nickel sulphate contains Ni²⁺ and SO^2-₃ ions.

i) which ion moves towards the cathode? 

ii) what is the product at the anode? 

Correct the following statements:

For example: chlorine is a bleaching agent.

Should read: moist chlorine is a bleaching agent

 Lead bromide conducts electricity.

Find the odd one out and explain your (note: valency is not a criterion)

Copper, lead, zinc, mercury.

Write a fully balanced equation for each of the following cases:

Red leads is warmed with concentrated hydrochloric acid

Write a fully balanced equation for each of the following cases:

Magnesium nitrides is treated with warm water.

Write a fully balanced equation for each of the following cases:

Magnesium metal is treated with dilute hydrochloric acid.

The sketch below illustrates the refining of aluminium by Hoope’s process.

(I) Which of A and B is the cathode and which one is the anode? 

(II) What is the electrolyte in the tank? 

(III) What material is used for the cathode? 

Correct the following statement:

For example : chlorine is a bleaching agent

Should read: moist chlorine is a bleaching agent.

Hydrochloric acid is prepared in the laboratory by passing hydrogen chloride directly through the water.

Correct the following statement:

For example: chlorine is a bleaching agent.

Should read : moist chlorine is a bleaching agent.

Haematite is the chief ore of aluminium.