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Answer : 2. "to remove the permanent hardness of water"
Sodium carbonate is used ______.
5Q:
Sodium carbonate is used ______.
- 1To make drinking water free from germsfalse
- 2to remove the permanent hardness of watertrue
- 3for bleaching cotton and linen in the textile industryfalse
- 4as an oxidising agent in many chemical industriesfalse
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Answer : 2. "to remove the permanent hardness of water"
Explanation :
It is commonly known as Na2CO3 or sodium carbonate. It is used in the softening of hard water i.e. it is used to remove the temporary and permanent hardness of the water. It is commonly used as a cleaning agent for domestic purposes. It is also used in the manufacturing of paper, soap, textiles, paints, etc.