Hotel Service Unit 14 Q1 Quiz

Hotel Service Unit 14 Fresh water Q1

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Why is it important to inspect a tank before reintroducing it to service?

D) To confirm it is large enough

B) To verify it is structurally sound and free from any signs of corrosion or damage

A) To ensure the tank is well-ventilated

C) To check if it is airtight

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What other benefit does adding hydrated lime to water provide?

B) Improves the taste by adding minerals

D) Increases the oxygen content

C) Softens the water by reducing hardness

A) Decreases the taste of salt in water

3 / 8

After cleaning the tank, what should be done next before putting it back into service?

C) Immediately fill it with seawater

A) Rinse the tank with treated water to remove residual disinfectants

D) Add chlorine directly to the tank

B) Leave it open to air for 24 hours

4 / 8

What is one method commonly used on board ships to kill bacteria in potable water?

C) Using deionization

A) Adding sodium chloride

B) Adding chlorine or chlorine-based compounds

D) Adding carbon dioxide

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What is the first step before bringing a fresh water tank back into service?

A) Check for fuel contamination

C) Fill it with treated water immediately

D) Increase the air pressure in the tank

B) Clean and disinfect the tank

6 / 8

Which alternative method can be used to sterilize water on board without adding chemicals?

B) Using ultraviolet (UV) light

C) Boiling the water

D) Adding mineral supplements

A) Adding sand filters

7 / 8

Why is hydrated lime added to fresh water produced on board an ocean-going vessel?

A) To soften the water by removing salts

D) To increase the water temperature

C) To remove organic compounds

B) To adjust the pH level, making the water slightly alkaline and reducing corrosion

8 / 8

Which other method is commonly used to produce fresh water on vessels?

B) Reverse osmosis filtration

D) Ion exchange

C) Solar heating

A) Chlorination

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