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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Q. The efficiency of chlorine increase by ______________

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Q. The contact time for disinfection by free chlorine is ______________

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Q. The contact time for disinfection by combined chlorine is ______________

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Q. Consider the following variables.

i. Concentration of disinfectant
ii. Concentration of organisms
iii. Temperature
iv. Time of contact

Disinfection is the function of which of the following variables?

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Q. According to which of the following, organism destroyed by disinfection is proportional to organism remaining?

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Q. Which of the following is the expression of Chicks law?

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Q. The integration of the expression of Chicks law is given by ____________

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