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Applied Chemistry 1: Water
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Applied Chemistry 1: Water
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25 Questions

1. In biological oxidation process, depending on the organic load, the oxidation takes place ___________
2. Bacteria in water causes ________
3. COD is the short form of the chemical oxygen demand.
4. Ion exchange process is the clean process because it has ___________
5. The very hard water has the hardness of CaCO3 is given by ___________
6. In lime soda process, the change in the hardness of the water needs ________
7. The iron is about the range in drinking water is _________
8. The mineral free water is not used in __________
9. Reacting the water with _________ removes the odour due to the phenols.
10. __________ imparts peculiar odour to the water.
11. The operational cost of the ion exchange process is __________
12. __________ of water is struck in underground which is not accessibly.
13. Increase in the BOD value in the water indicates ___________
14. Fishes can store more quantity of ___________ in their bodies.
15. The BOD value of the domestic sewage is about __________
16. Ion exchange process is also called as ___________
17. The colour and odour of the natural water is due to the presence of the ___________
18. All impurities are oxidised into the _________ and ___________ in the biological oxidation process.
19. In the trickling filter process, the _________ build up and they block the passage.
20. Batch process is only used for removing the hardness of the water on _________
21. By aerobic process _________ of biodegradable water is converted into the biomass.
22. ___________ water contains more soluble salts than the surface water.
23. Non hazardous organic wastes from the sewage is to be separated from the ___________
24. Amino acids comes under _________ impurity.
25. By ultra filtration aldrin can be removed by _________

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