Advertisements
Advertisements
Question
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
Advertisements
Solution
At anode: \[\ce{2O^{2-} -> O2 + 4e-}\]
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Why does aluminium not corrode right through?
Define the term mineral.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Which metal is extracted from bauxite ore?
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
An ore of manganese metal is:
(a) bauxite
(b) haematite
(c) cuprite
(d) pyrolusite
An important ore of zinc metal is:
(a) calamine
(b) cuprite
(c) pyrolusite
(d) haematite
Which metal can be extracted from the following ore?
Calamine
Complete the incomplete statement with missing word:
Metals are malleable while non-metals are ______.
Complete the incomplete statement with missing word:
Metals form positive ions while non- metals ______.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
Name : The metal which is liquid at room temperature.
Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
Sulphide ores : Roasting : : Carbonate ores : _______
Explain the following reaction with the balanced equation.
Chlorine dissolved in water
Observe the figure and answer the following.
- Write the name of the method.
- What is used as anode and cathode in this method?
- Write the molecular formula and use of cryolite.
- Write anode reaction.
- Write cathode reaction.
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
Care must be taken while diluting concentrated nitric acid with water. Why?
