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Chemistry CBSE Live product
Class 10
Chemical reaction and equations
PT1 Revision - Chemical reactions and equations
4.
Types of chemical reactions
Question:
2
m.
Choose the correct answer:
1.
A solution of a substance 'X' is used for whitewashing. Write the name of the substance "X".
Calcium oxide (quick lime)
Sodium carbonate (soda lime)
Sodium oxide(soda lime)
Calcium carbonate (quick lime)
2.
Which chemical reaction explains the colour change observed when an iron nail is placed in copper sulphate solution?
Combustion reaction
Displacement reaction
Double displacement reaction
Oxidation reaction
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