SCORM Quiz Question 1. Rivers are -----------------ground water sources. Answers Option 1 surface Option 2 ground Question 2. Industrial water treatment process involves------------stages. Answers Option 1 five Option 2 six Question 3. Soda ash is added to water to-------------------. Answers Option 1 kill disease causing microorganisms Option 2 to soften water Question 4. Chlorination is the--------------stage of water treatment process. Answers Option 1 sixth Option 2 fifth Enable JavaScript