Water Treatment Operator Exam Class C and D questions with correct detailed anwers

Water Treatment Operator Exam Class C
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and D questions with correct detailed anwers
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Always |_____ |a |piece |of |equipment |before |attempting |a |repair |- |CORRECT |
ANSWER✔✔-Lockout/Tagout

Never |Tamper |with |a |____ |on |a |chlorine |cylinder |- |CORRECT |ANSWER✔✔-fusible |plug

Chlorine |gas |is |_____ |times |heavier |than |air. |- |CORRECT |ANSWER✔✔-2.5

one |volume |of |liquid |chlorine |produces |____ |Volumes |of |gaseous |chlorine |under |pressure |- |
CORRECT |ANSWER✔✔-460

Always |Change |the |______ |when |changing |a |chlorine |cylinder |- |CORRECT |ANSWER✔✔-Lead |
Washer

Always |first |_________ |to |a |chlorine |cylinder |before |changing |the |cylinder |- |CORRECT |
ANSWER✔✔-turn |off |the |valve

Always |make |certain |150-lbs |Chlorine |cylinders |are |stored |_____ |- |CORRECT |ANSWER✔✔-
Upright |and |secured

When |transporting |a |chlorine |cylinder |always |use |a |_____ |- |CORRECT |ANSWER✔✔-Hand |truck

Never |move |a |one-ton |cylinder |over |a |____ |or |one |that |is |____ |- |CORRECT |ANSWER✔✔-full |one-
ton |cylinder |, |online

Chlorine |leaks |can |be |detected |with |______ |- |CORRECT |ANSWER✔✔-a |10% |ammonia |solution

Chlorine |leaks |tend |to |leave |a |____ |at |the |spot |leaking |- |CORRECT |ANSWER✔✔-green/yellowish |
color

Chlorine |leaks |always |_____, |never |_____. |- |CORRECT |ANSWER✔✔-Become |larger, |Smaller

Always |turn |a |leaking |chlorine |cylinder |so |that |______. |- |CORRECT |ANSWER✔✔-the |gas |escapes, |
not |the |liquid

Chlorine |is |an |____ |that |is |not |combustible |but |____. |- |CORRECT |ANSWER✔✔-oxidizing |agent |, |
supports |combustion

when |you |spray |____ |on |a |chlorine |leak |a |____ |will |appear. |- |CORRECT |ANSWER✔✔-ammonia |
fumes |, |white |vapor
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