Class 10 Courses

Chapter 7: Class 10 Chemistry Exam Tests

Class 10 Chemistry MCQs - Chapter 7

Environmental Chemistry II Water Multiple Choice Questions (MCQs) PDF Download - 9

The Environmental chemistry ii water Multiple Choice Questions (MCQs) with Answers PDF (environmental chemistry ii water MCQs PDF e-Book) download Ch. 7-9 to study Grade 10 Chemistry Course. Learn Environmental Chemistry II Water Quiz Questions and Answers for high school certificate courses. The Environmental Chemistry II Water MCQs App Download: Free learning app for water pollution, soft and hard water, properties of water test prep for online study.

The MCQ: The third step of sewage water treatment is called; "Environmental Chemistry II Water" App Download (Free) with answers: Secondary sewage treatment; Primary sewage treatment; Activated sludge treatment; Chlorination; for high school certificate courses. Solve Water Pollution MCQ Questions, download Google eBook (Free Sample) for high school graduation certificate.

Environmental Chemistry II Water MCQs with Answers PDF Download: Quiz 9

MCQ 41:

The third step of sewage water treatment is called

  1. primary sewage treatment
  2. secondary sewage treatment
  3. activated sludge treatment
  4. chlorination
MCQ 42:

Water that gives little lather is called

  1. hard water
  2. soft water
  3. dirty water
  4. clean water
MCQ 43:

Water exists in how many different states on Earth?

  1. one
  2. two
  3. three
  4. four
MCQ 44:

What is the percentage of water from oceans?

  1. 0
  2. 0.002
  3. 0.006
  4. 0.97
MCQ 45:

The hardness which can be removed by boiling is called

  1. permanent hardness
  2. temporary hardness
  3. stiffness
  4. toughness

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Environmental Chemistry II Water App (Android & iOS)

Environmental Chemistry II Water App (Android & iOS)

10th Grade Chemistry App (Android & iOS)

10th Grade Chemistry App (iOS & Android)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

College Chemistry App (Android & iOS)

College Chemistry App (iOS & Android)