Question

B. Statements given below are incorrect. Write
the correct statements :

1. Chemical name of magnesite is magnesium
sulphate.
2. Calcium carbonate and dilute sulphuric
acid are used for the preparation of carbon
dioxide gas in laboratory.
3. When carbon dioxide gas in excess is
passed through limewater, it turns pink.
4. Carbon dioxide gas is used as refrigerant
for perishable food.
5. When carbon dioxide gas is passed through
red hot coke, it forms oxygen gas.​

Answer 1

Answer:

3.When carbon Dioxide gas in excess is passedthrough limewater, it turns pink.

Answer 2

1. Chemical name of magnesite is magnesium carbonate.

2.calcium carbonate and dilute hydrochloric acid are used for the preparation of carbon dioxide gas in laboratory.

3. when carbon dioxide gas in excess is passed through lime water it turns colourless.

4. solid carbon dioxide gas is used as refrigerant for perishable food.

5.When Carbon dioxide gas is passed through red hot coke , it forms Carbon dioxide gas

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