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प्रश्न
Fill in the following blank with suitable word:
Bronze is an alloy of copper and .........
उत्तर
Bronze is an alloy of copper and tin.
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संबंधित प्रश्न
Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
Name one metal which is extracted by reduction with aluminium.
Name the chemical compound which is electrolysed in molten state to obtain sodium metal. Which gas is produced in this process?
The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper
An important ore of zinc metal is:
(a) calamine
(b) cuprite
(c) pyrolusite
(d) haematite
Give the principles of electromagnetic separation.
Write equations for each of the above metal which reacts with water.
Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
Sulphide ores : Roasting : : Carbonate ores : _______
