Conductivity Quiz 1

True or False:

Distilled water made in a lab generally has a conductivity ratio of 0.5-3 μS/cm

• True

• False

What is the acceptable conductivity of drinking water in the US?

• 1500 μS/cm to 10,000 μS/cm

• 50 μS/cm to 1500 μS/cm

• 20 μS/cm to 50 μS/cm

• 50 μS/cm to 100 μS/cm

Conductivity instruments are in in

• pipelines & mutiple parameter monitoring stations

• channels

• flowing streams and lakes

• All of the above

What causes the most issues when trying to collect sound data in a conductivity test?

• Inadequate sample circulation

• electrode fouling

• If the sample has a greater conductivity of 10,000 to 50,000 μS/cm or less than 10 μS/cm

• All of the above

What does conductivity rely on?

• The number of ions and the temperature, valence electrons

• number of ions, the temperature, and the type of solution

• The type of solution, movement of ions, valence electrons, and temperature

• the number of ions, the concentration of ions, mobility, valence electrons, and temperature

What is conductivity?

• The movement of solution

• mobility of particles in solution without the use of electrons

• the ability of the particles to move electronically

• the ability of an aqueous solution to carry electric current

Most inorganic solutions are _____ while most inorganic solutions are_____

• not good conductors of particles, are good conductors of particles

• cannot bend light waves, can bend light waves

• good conductors of electrons, are not good conductors of electrons

• not good conductors of electrons, are great conductors of electrons

True or false:

It is important to use a self contained conductivity meter with an error not exceeding 1 % or 1 μS/cm, whichever happens to be greater.

• True

• False

What should one do if the conductivity readings start becoming erratic?

• Replace the sample and start again

• Rinse the probe with reagent water and start again

• Tell the Quality manager and who ever else will listen

• clean and replatinize the probe

What are some items that can a interefere with getting an accurate reading?

• Air bubbles trapped in the probe

• Types of containers

• a only

• a and b both