Q. What is the chemical formula of bleaching powder?

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Q. Bleaching powder contains ______ of available chlorine.

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Q. The process of chlorination with hypochlorites is called ___________

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Q. Normally, the ratio of ammonia and chlorine in chloramine is?

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Q. Which type of chloramine is formed when pH of water is 4.4?

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Q. What is the contact period for disinfection with chloramine?

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Q. The normal dose of chlorine during plain chlorination is ___________

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Q. The normal dose of chlorine during pre chlorination is ___________

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Q. The normal dose of chlorine during post chlorination is ___________

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Q. In which form of chlorination, chlorine applies to raw water supply as it enters the distribution system?

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Q. _________ is the application of chlorine before filtration.

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Q. __________ is the application of chlorine at two or more points in the purification process.

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Q. The normal dose of chlorine during break point chlorination is ____________

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Q. Which of the following regarding break point chlorination is wrong?

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Q. _______ is the application of chlorine beyond the stage of the break point.

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Q. The process of removal of excess chlorine from water is ____________

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Q. Which color is formed when orthotolidine is oxidized by chlorine?

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Q. When turbidity in water increases, the efficiency of chlorine?

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Q. The presence of metallic compounds in water _______ the efficiency of chlorine.

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Q. The amount of hypochlorous acid formed when pH of water is 8 is _______________

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