PAC 1 Test Questions & Answers

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PAC 1 Test Questions & Answers Most water sources are classified as: a) Clean or dirty b) Hot or cold c) Surface or well d) Acidic or alkaline - ✔✔c) Surface or well Fe++, Mg++ are known as:... a) divalent anions b) divalent cations c) reactive atoms d) molecules - ✔✔b) divalent cations How many pounds of product are needed to make 300 gallons of a 1% solution (weight to weight) of an Ondeo Nalco product that has a density of 9.4#/gal? a) 22.1 b) 25 c) 28.2 d) 235 - ✔✔b) 25 300 gallons is 2,502 pounds of water. 1% would be 25 pounds. Because you are working in pounds, no further conversions are necessary. 25 pounds weight of product to weight of water . If it was volume product to volume of water the answer would be 28.2 because 1% of 300 gallons is 3 gallons and 3 X 9.4 = 28.2 What is the rise rate of a clarifier with the following dimensions? Clarifier diameter: 30 ft Clarifier depth: 12 ft Flow: 1.0 million gallons per day Clarifier type: Upflow raw water clarifier [Show More]

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