What is polymer?
2.What is lubricant?
3.What is PH?
4. What is the unit of hardness? Write full
form of it.
5.What is the cause of hardness of water?
plz help me
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1. A substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together is called polymer.
2. A substance used for lubricating an engine or a component is called lubricant.
3. PH is a scale used to specify the acidic or basic of an aqueous solution.
4. The unit of hardness of water is calcium carbonate milligrams per litre.
5. The cause of hardness of water is due to presence of chemical salts and other minerals.
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