Advertisements
Advertisements
प्रश्न
Right or wrong sentence?
In the electrolytic dissipation method of alumina, the lining of graphite acts as an anode.
पर्याय
Right
Wrong
Advertisements
उत्तर
The given sentence is wrong.
Explanation:
In the electrolytic reduction of alumina (the Hall-Héroult process), the graphite lining of the steel tank acts as the cathode (the negative electrode). The anode (the positive electrode) consists of a separate set of graphite rods that are suspended into the molten electrolyte mixture.
APPEARS IN
संबंधित प्रश्न
Name the most abundant metal in the earth’s crust.
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Name one metal which is extracted by:
Reduction with carbon.
Name the electrode at which aluminium metal is produced.
Which of the following is an ore of mercury metal?
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
Name the following:
The mixture of materials fed into a furnace to extract a metal.
How an ore is concentrated by froth floatation process?
Write equations for each of the above metal which reacts with water.
Name a non- metal that has a metallic luster and sublimes on heating.
Iron is _______.
Atomic number of aluminium is _______ and its electronic configuration is _______.
Sulphide ores : Roasting : : Carbonate ores : _______
Bauxite reacts with sodium hydroxide in the Bayer’s process.
Explain the concept of Calcination.
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Explain concept with example/explain with the help of a balanced equation.
Roasting
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
Electrical wires have a coating of an insulting material. The material, generally used is
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.
