MEDIUM
10th Karnataka Board
IMPORTANT
Earn 100
Draw the diagram of the apparatus used in the electrolysis of water. Label the cathode.
Important Questions on Metals and Non-Metals
MEDIUM
10th Karnataka Board
IMPORTANT
Observe the following chemical equations:
(i)
(ii)
What is the conclusion that you take about the nature of aluminium oxide with the help of these equations? Give a reason for your conclusion.
MEDIUM
10th Karnataka Board
IMPORTANT
Molten cryolite is mixed with molten alumina in the extraction of aluminium by electrolysis. Why? Name the substances that are used as anode and cathode in this method.
EASY
10th Karnataka Board
IMPORTANT
What is roasting in metallurgy?
MEDIUM
10th Karnataka Board
IMPORTANT
Ionic compounds in a solid-state do not conduct electricity, whereas molten states are good conductors of electricity. Give reason.
MEDIUM
10th Karnataka Board
IMPORTANT
"Alloys of iron are more useful when compared to pure iron." Give reason.
MEDIUM
10th Karnataka Board
IMPORTANT
Aluminium oxide is called amphoteric oxide. Give reason.
MEDIUM
10th Karnataka Board
IMPORTANT
What are amphoteric oxides?
MEDIUM
10th Karnataka Board
IMPORTANT
Draw the diagram of the arrangement of apparatus to show that acid solution in water conducts electricity and label the battery.