// // // //
D2 Questions with correct answers
// // // //
The /
/only /
/absolutely /
/reliable /
/method //of //backflow //prevention //is //the //use //of //- //CORRECT //ANSWERS(S)✔✔Air //Gap
The /
/bubbles /
/formed /
/in //
a/
/positive //multiple //tube //fermentation //test //are //- //CORRECT //ANSWERS(S)✔✔Carbon //Dioxide
The //maximum //rate //of //withdrawal //of //gas //from //a //150lb //chlorine //cylinder //in //24-
hours //is //- //CORRECT //ANSWERS(S)✔✔40 //lbs
If /
/you /
/encounter //
a/
/liquid /
/chlorine /
/leak /
/in //
a/
/one /
/tone /
/container, /
/what /
, /action /
/should /
/you /
/take /
/first, /
/to /
/reduce /
/the /
/severity /
/of /
/the //leak? //- //CORRECT //ANSWERS(S)✔✔Rotate //the //container //to //place //the //leak //at //the //top
The /
/most /
/commonly /
/used //water //disinfectant //in //the //United //States //is //- //CORRECT //ANSWERS(S)✔✔Chlorine
When /
/collecting //
a/
/distribution /
/system /
/sample, /
/the /
/water /
/should /
/be /
/allowed /
/to /
/run /
/for //
a/
/period /
/of /
/time /
/prior /