Correct Questions And Answers Already
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GRADE 1 LAB ANALYST Exam
triple beam balance - ANSWER✔ instrument used to measure mass,
less sensitive than top loading
Coliform - ANSWER✔ Gram-negative rod-shaped bacteria normally
present in the intestine; includes E. coli and other species.
temp and pH - ANSWER✔ temp rises, pH drops. Must measure pH
within 15 min of collecting sample
Always add ___ to ___ - ANSWER✔ acid to water
spectrometer - ANSWER✔ a device that spreads light into its
different colors
rounding off - ANSWER✔ .5=keep # even <.4 stays the same >.6
round up
sig fig rules - ANSWER✔ Non-zero digits are always significant.
Any zeros between two significant digits are significant.
A final zero or trailing zeros in the decimal portion ONLY are
significant.
adding sig figs - ANSWER✔ smallest number of decimals
Alkalinity hold time - ANSWER✔ 14 days
COD hold time - ANSWER✔ 28 days
, BOD hold time - ANSWER✔ 48 hours
pH hold time - ANSWER✔ 15 min
Turbidity hold time - ANSWER✔ 48 hours
BOD Temp Incubator - ANSWER✔ 20+/- 1`C
Normality equation - ANSWER✔ (N1)(V1)=(N2)(V2)
Sample labels should include - ANSWER✔ unique sample number,
sample type, name of collector, date and time of collection, place of
collection, and sample preservative
mg/L to lb/day - ANSWER✔ feed rate (lb/day)= dosage (mg/L) x
flow rate (mgd) x 8.34
Celcius - ANSWER✔ (F-32)5/9
HPC media water bath - ANSWER✔ 45`C, 3hr
Precision - ANSWER✔ a measure of how close a series of
measurements are to one another
Accuracy - ANSWER✔ how close a measurement is to the true value
Electrical Fire - ANSWER✔ unplug & sodium bicarbonate
analytical balance - ANSWER✔ a device for determining mass that
gives highly accurate measurements
top loading balance - ANSWER✔ used to determine mass; not as
precise as an analytical balance
Graded A+ Latest Updated Version For
Exams 100% Guaranteed For CWEA
GRADE 1 LAB ANALYST Exam
triple beam balance - ANSWER✔ instrument used to measure mass,
less sensitive than top loading
Coliform - ANSWER✔ Gram-negative rod-shaped bacteria normally
present in the intestine; includes E. coli and other species.
temp and pH - ANSWER✔ temp rises, pH drops. Must measure pH
within 15 min of collecting sample
Always add ___ to ___ - ANSWER✔ acid to water
spectrometer - ANSWER✔ a device that spreads light into its
different colors
rounding off - ANSWER✔ .5=keep # even <.4 stays the same >.6
round up
sig fig rules - ANSWER✔ Non-zero digits are always significant.
Any zeros between two significant digits are significant.
A final zero or trailing zeros in the decimal portion ONLY are
significant.
adding sig figs - ANSWER✔ smallest number of decimals
Alkalinity hold time - ANSWER✔ 14 days
COD hold time - ANSWER✔ 28 days
, BOD hold time - ANSWER✔ 48 hours
pH hold time - ANSWER✔ 15 min
Turbidity hold time - ANSWER✔ 48 hours
BOD Temp Incubator - ANSWER✔ 20+/- 1`C
Normality equation - ANSWER✔ (N1)(V1)=(N2)(V2)
Sample labels should include - ANSWER✔ unique sample number,
sample type, name of collector, date and time of collection, place of
collection, and sample preservative
mg/L to lb/day - ANSWER✔ feed rate (lb/day)= dosage (mg/L) x
flow rate (mgd) x 8.34
Celcius - ANSWER✔ (F-32)5/9
HPC media water bath - ANSWER✔ 45`C, 3hr
Precision - ANSWER✔ a measure of how close a series of
measurements are to one another
Accuracy - ANSWER✔ how close a measurement is to the true value
Electrical Fire - ANSWER✔ unplug & sodium bicarbonate
analytical balance - ANSWER✔ a device for determining mass that
gives highly accurate measurements
top loading balance - ANSWER✔ used to determine mass; not as
precise as an analytical balance
