Hotel Service Unit 14 Q2 Quiz

Hotel Service Unit 14 Fresh water Q2

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Which of the following is a desired property of domestic water for safe use?

A) High turbidity

D) High levels of chlorine

B) Neutral or slightly alkaline pH to prevent corrosion

C) High salt content

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What method can be used to ensure the pH of domestic water remains slightly alkaline?

A) Adding an acid

B) Adding hydrated lime

D) Deionizing the water

C) Filtering through carbon

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Why is it important for domestic water to be free from turbidity?

D) Turbid water prevents chlorine from acting effectively

A) Turbidity enhances the taste of the water

C) Turbidity increases water's temperature

B) Clear water without turbidity is less likely to harbor pathogens and is aesthetically pleasing

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Why is chlorination often used when taking on fresh water from ashore?

A) To decrease the water’s temperature

D) To increase the water pressure

C) To add minerals to the water

B) To kill any bacteria or pathogens that might be present

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What is the primary treatment required for fresh water taken on board from ashore?

A) Heating the water

B) Adding chlorine or other disinfectants to ensure it is free from bacteria

D) Reducing the water's pH level

C) Filtering it through a sand filter

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Which process is often used to remove turbidity from domestic water?

C) Sedimentation and filtration

D) Chlorination

A) Boiling

B) Carbon filtration

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Why must domestic water have low microbial content?

B) High microbial content increases the risk of disease

A) Microbes improve water taste

D) Microbes add nutrients to the water

C) It reduces water pH

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How is microbial content commonly controlled in domestic water?

D) By adding minerals

C) By freezing the water

B) Through chlorination or ultraviolet (UV) sterilization

A) By adding salts

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