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प्रश्न
Which one of the following is not true of metal :
Metals are good conductors of electricity.
पर्याय
True
False
उत्तर
Metals are good conductors of electricity. - True
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संबंधित प्रश्न
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Define the term mineral.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide
(b) hydride
(c) sulphide
(d) carbonate
Which metal can be extracted from the following ore?
Haematite
Name the following:
The process of heating a substance very strongly in such a way that it does not combine with oxygen.
Compare the process of calcination and roasting.
Find the odd one out and give its explanation.
Explain the following reaction with the balanced equation.
Dry aluminium hydroxide is ignited at 1000 °C
