AALSO Level 1 Operator Certification UPDATED ACTUAL Exam Questions and CORRECT Answers

AALSO Level 1 Operator Certification
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Universal solvent - CORRECT ANSWER - Polarity of the molecule, many substances can be
dissolved in it


Cohesion - CORRECT ANSWER - Water's affinity for "staying together" or staying intact



Adhesion - CORRECT ANSWER - Water's affinity for "breaking off" or sticking to another
substance


pH - CORRECT ANSWER - Measures the activity of the hydrogen ions in a substance; high
activity, low pH; low activity, high pH


Testing for pH - CORRECT ANSWER - Probe with a glass bulb and low voltage, or a
chemical substance with a known reaction to pH


Temperature - CORRECT ANSWER - The kinetic energy (motion) of the molecules in a
substance. Measured with a thermometer or a temperature probe.


Salinity - CORRECT ANSWER - Measurement of salt ion concentration in water. Measured
with a refractometer or by conductivity.


Total Ammonia Nitrogen - CORRECT ANSWER - Primarily a concern at higher pH levels,
consists of ammonia and ammonium. Tested with a reagent.


Nitrogen cycle - CORRECT ANSWER - Ammonia oxidized to nitrite by nitrosomonas, and
then oxidized into nitrate with nitrobacter