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Science CBSE Homework Assignments
Class 10
Chemical reaction and equations
Chemical reaction
1.
Displacement reaction
Task:
2
m.
1.
A solution of a substance 'X' is used for whitewashing. Write the name of the substance "X".
Calcium carbonate (quick line)
Calcium oxide(quick lime)
Sodium carbonate (soda line)
Sodium oxide(soda lime)
2.
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Because of the combination reaction
Because of the decomposition reaction
Because of the displacement reaction
Because of the oxidation reaction
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