Q.1
Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : In an abattoir, chlorine foam can act fully as a cleaner and a disinfectant and subsequent disinfection is not
needed after its application
Reason (R) : In chlorine foam cleaners, the application solution is usually having lower pH, resulting in presence of much
weaker form i.e. hypochlorite ion
In light of the above statements, choose the correct answer from the options given below.
- Assertion (A) is True: In modern abattoirs, alkaline chlorinated foam cleaners combine foaming surfactants with available chlorine, acting simultaneously as a heavy detergent to strip fats/proteins and as a primary surface disinfectant, eliminating the need for a separate subsequent disinfectant application.
- Reason (R) is False: In chlorinated alkaline foam cleaners, the working pH is alkaline ($pH \gt 10$) to prevent rapid hypochlorite breakdown and maintain foam stability. At lower acidic pH ($pH \lt 7.5$), chlorine exists as undissociated hypochlorous acid ($HOCl$), which is the vastly stronger and more lethal biocidal form (not the "weaker" form).
- Conclusion: (A) is true, but (R) is false.
Correct option: (3) (A) is true but (R) is false.
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