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प्रश्न
Arrange the metals of copper, iron, magnesium, sodium and zinc in the decreasing order of reactivity.
उत्तर
Sodium > magnesium > Zinc > Iron > Copper
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संबंधित प्रश्न
In the extraction of aluminium: Why is it necessary to replace anodes time to time?
How many carats is pure gold? Why is pure gold not suitable for making ornaments?
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
Name one ore of copper (other than cuprite). Which compound of copper is present in this ore? Also, write its chemical formula.
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
Define the term : Slag
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
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 ______.
Write the name.
The molecular formula of main ore of aluminium –
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
