CWEA GRADE 1 LAB ANALYST EXAM 2026-2027 ACTUAL EXAM 200 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES |AGRADE (29pages)

 

During acid base titration, titrant is added to the sample with - 

ANSWER- Buret 

 

When preparing diluted calibration standards from a stock standard, use combination of the following to get the most precise standard - ANSWER- Class A volumetric flask and class A volumetric pipet 

 

At a given temperature, the intensity of the acidic or basic character of a solution is indicated by - ANSWER- pH or hydrogen ion activity 

 

pH measurement requires the following - ANSWER- voltmeter, glass pH electrode, reference electrode, and a temperature compensating device 

 

Conductance measurements are temperature compensated to - ANSWER- 25 degrees C 

 

Conductivity meter is calibrated with - ANSWER- 0.0100 N potassium chloride standard 

 

Alkalinity is reported as - ANSWER- Alkalinity mg CaCO3/L 

 

The hardness determination by EDTA titration measures - ANSWER- 

Calcium and magnesium