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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Q. The dimensional formula of rate constant used in Chicks law is ____________

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Q. The number of organisms destroyed is equal to the number of organisms remaining at time t = __________

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Q. The expression loge N1/N = – kt m Where m is a constant such that m>1 represents ____________

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Q. For changing the concentration of disinfectant, the disinfecting efficiency is expressed by ____________

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Q. The number of organisms in disinfection process can be expressed by ____________

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Q. Efficiency of dilution decreases rapidly when the coefficient of dilution is ____________

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Q. When the coefficient of dilution is 1, then which of the following statement is correct?

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Q. The temperature of disinfection is inversely proportional to the killing of organisms.

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Q. The chemical formula of hypoiodous acid is __________

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Q. At what pH, the dissociation of hypoiodous acid takes place?

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Q. What happens to the hypoiodous acid when the pH is over 8?

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Q. The chemical formula of iodate is __________

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Q. a HIO + b OH⁻ <=> HIO₃ + b H₂O + b I⁻. What are the values of a and b respectively in the above equation?

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Q. What happen to the concentration of iodine when the pH is between 6 and 8?

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Q. Iodine is a better disinfectant to kill virus than hypoiodous acid.

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