Chemistry question bank water
WATER
QUESTIONS 1. Define hardness of water. How A it expressed?
2. Distinguish between temporary (carbonate) and permanent (non-carbonate) hardness.
3. Distinguish between hard and soft water. 4. What are the problems caused by use of hard water in industries?
5. Discuss briefly: (i) Scales and sludge (ii) Caustic embrittlement (iii) Priming and foaming (iv) Boiler
corrosion.
6. Discuss the principle of the EDTA method f t4ti fhardness
7 Discuss the principle of softening of water by the lime-soda process and give well balanced equations for the same.
8. Distinguish between old and hot lime-soda process of softening of water.
9. Discuss in detail the continous lime-soda process fsoftening of water.
10.What are zeolites? Give the chemical formula. Discuss the process of softening 0 water by the zeolite process. What are the advantages of this processand its drawbacks?
11. Discuss the ion-exchange process of softening of water.
12. What A meant by reverse osmosis? Who is the main advantage of reverse osmosis over ion-exchange process?
13. What A ultrafiltration? How does ultrafiltration differ from reverse osmosis?
14. What A meant by internal conditioning f water or sequestration. Give the principle Involved in the process
QUESTIONS 1. Define hardness of water. How A it expressed?
2. Distinguish between temporary (carbonate) and permanent (non-carbonate) hardness.
3. Distinguish between hard and soft water. 4. What are the problems caused by use of hard water in industries?
5. Discuss briefly: (i) Scales and sludge (ii) Caustic embrittlement (iii) Priming and foaming (iv) Boiler
corrosion.
6. Discuss the principle of the EDTA method f t4ti fhardness
7 Discuss the principle of softening of water by the lime-soda process and give well balanced equations for the same.
8. Distinguish between old and hot lime-soda process of softening of water.
9. Discuss in detail the continous lime-soda process fsoftening of water.
10.What are zeolites? Give the chemical formula. Discuss the process of softening 0 water by the zeolite process. What are the advantages of this processand its drawbacks?
11. Discuss the ion-exchange process of softening of water.
12. What A meant by reverse osmosis? Who is the main advantage of reverse osmosis over ion-exchange process?
13. What A ultrafiltration? How does ultrafiltration differ from reverse osmosis?
14. What A meant by internal conditioning f water or sequestration. Give the principle Involved in the process
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