Metals & Non-metals (C10)
Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention
How is copper extracted from its sulphide ore
How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
Read more …Metal X is found in nature as its sulphide XS
Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.
Read more …Sodium or potassium metals are kept immersed under kerosene
State the reason for the following: Sodium or potassium metals are kept immersed under kerosene.
Read more …Calcium does not occur in free state in nature
State the reason for the following: Calcium does not occur in free state in nature.
Read more …Hydrogen gas is not evolved when most metals react with nitric acid
State the reason for the following: Hydrogen gas is not evolved when most metals react with nitric acid.
Read more …An iron strip dipped in a blue copper sulphate solution
State the reason for the following: An iron strip dipped in a blue copper sulphate solution turns the blue solution pale green.
Read more …Aluminium oxide is called an amphoteric oxide
State the reason for the following: Aluminium oxide is called an amphoteric oxide.
Read more …What is reactivity series
What is reactivity series? How does the reactivity series of metals help in predicting the relative activities of various metals?
Read more …Suggest different chemical processes used for obtaining a metal from its oxides
Suggest different chemical processes used for obtaining a metal from its oxides for metals in the middle of the reactivity series and metals towards the top of the reactivity series. Support your answer with one example each.
Read more …List in tabular form chemical properties on the basis of which
List in tabular form any three chemical properties on the basis of which metals and non-metals are differentiated.
Read more …Write the steps involved in the extraction of pure metals
Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.
Read more …