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प्रश्न
Name the following:
The property possessed by metals by which they can be beaten into sheets.
उत्तर
Malleability
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संबंधित प्रश्न
Give reasons.
Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
The process by which sulphide ore is concentrated.
Which metal becomes black in the presence of hydrogen sulphide gas in air?
Which one of the methods given in column I is applied for the extraction of each of the metals given in column II:
| Column I | Column II |
| Electrolytic reduction | Aluminium |
| Reduction with Carbon | Zinc |
| Reduction with Aluminium | Sodium |
| Iron | |
| Manganese | |
| Tin |
How is zinc extracted from its carbonate or (calamine)? Explain with equations.
In an electrolytic tank, aluminium metal is being extracted by the electrolysis of molten aluminium oxide using carbon electrodes. It is observed that one of the carbon electrodes is gradually burnt away and has to be replaced.
(a) Which carbon electrode (cathode or anode) is burnt away?
(b) Why is this carbon electrode burnt away?
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
Choose the correct answer from the options given below:
The metal is a liquid at room temperature.
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?
