A person in a hot climate will require ____________ drinking water when
compared to a similar person in a similar job in a cooler climate.
About the same amount of.
Place in correct sequence the following steps in measuring the chlorine residual of
a water sample:
Crush the orthotolidine tablet and put into the tube.
Replace cap on tube and shake.
Fill tube with water to a point just below the yellow band.
Compare shade of water with shade of band on tube.
Select appropriate tube for the desired chlorine residual.
a. (1) - (2) - (3) - (4) - (5).
b. (5) - (4) - (3) - (2) - (1).
(5) - (1) - (3) - (2) - (4).
d. (5) - (3) - (1) - (2) - (4).
The principal disadvantage of boiling as a means of disinfecting water is that it:
a. Requires too much time.
b. Requires gasoline.
Destroys necessary minerals.
d. Does not protect against recontamination.