(29) The shaft of the mixer should be
adjusted about 25 off vertical,
and to the right of the center of
the container when mixing a chemical
solution.
Which figure illustrates the
correct shaft and propeller
for most efficient mixing?
ANS. _________
A
B
A
(30) If the shaft of the mixer is placed
in the center of the bucket, it will
cause a whirlpool effect, which intro-
duces air (oxidation) into the solution
and will ruin the solution.
Oxidation will ________ the solution.
ruin
(31) Do not place the shaft of the mixer
in the center of the bucket because
it will cause the solution to
___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .
oxidize
(32) Another reason for not placing the
shaft of the mixer in the center of
the bucket is that the chemicals
will pile up and not dissolve be-
neath the end of the shaft, because
of very little agitation about the
center of the bucket.
(NO RESPONSE REQUIRED)
(33) To prevent oxidation of the chemical
solution is the main reason for not
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