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प्रश्न
_______ is the least reactive metal.
पर्याय
silver
sodium
zinc
gold
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उत्तर
Gold is the least reactive metal.
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संबंधित प्रश्न
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
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Which metal is extracted from bauxite ore?
The major ore of aluminium is known as ______.
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Zinc blende ore can be converted into zinc oxide by the process of ______.
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
Name the electrode, from which aluminium collected.
Name the following:
Name two metals always find in combined state.
How an ore is concentrated by froth floatation process?
What is passive iron?
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as ______.
What is the difference between calcination and roasting?
Iron 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.
Ferric oxide is reacted with aluminium.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
In thermite welding a mixture of ____________ is ignited with a burning magnesium ribbon which produces molten iron metal as a large amount of heat is evolved.
Care must be taken while diluting concentrated nitric acid with water. Why?
