Advertisements
Advertisements
Question
In electrolytic reduction of alumina _______ is used as a cathode.
Options
sulphur
graphite
platinum
aluminium
Advertisements
Solution
In electrolytic reduction of alumina graphite is used as a cathode.
APPEARS IN
RELATED QUESTIONS
Name the following:
Main ore of aluminium.
What chemical process is used for obtaining a metal from its oxide?
Name the gas produced when calamine ore is calcined.
How is sodium metal extracted? Explain with the help of equation of the reaction involved.
Name the metal which is extracted from haematite ore.
Which of the following is an ore of mercury metal?
Which of the following metals can be obtained from haematite ore?
The metal which can be extracted simply by heating the cinnabar ore in air is ______.
Write equations for each of the above metal which reacts with water.
Name : The metal which is liquid at room temperature.
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Name the following:
The process of heating an ore to a high temperature in the presence of air.
Define roasting.
Iron is _______.
Aluminium oxide is _______ oxide.
Write the name.
Extraction of aluminium from alumina-
Explain the following reaction with the balanced equation.
Dry aluminium hydroxide is ignited at 1000 °C
Complete flow chart given below.
Electrical wires have a coating of an insulting material. The material, generally used is
