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Class 10 Chemistry MCQs - Chapter 7

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

The Book Environmental chemistry ii water Multiple Choice Questions and Answers (MCQs), environmental chemistry ii water quiz answers PDF 9 to study online courses, class 10 chemistry tests. Practice Water Pollution MCQs, environmental chemistry ii water quiz questions and answers for distance learning. The App Environmental Chemistry II Water MCQ e-Book PDF Download: water pollution, soft and hard water, properties of water test prep for free online courses.

The Multiple Choice Question (MCQ Quiz): The third step of sewage water treatment is called PDF, "Environmental Chemistry II Water MCQ" App Download (Free) with secondary sewage treatment, primary sewage treatment, activated sludge treatment, and chlorination choices for distance learning. Solve water pollution quiz questions, download Google eBook (Free Sample) for online education programs.

Class 10 Chemistry: Environmental Chemistry II Water MCQs Questions PDF Download

MCQ: The third step of sewage water treatment is called

A) primary sewage treatment
B) secondary sewage treatment
C) activated sludge treatment
D) chlorination

MCQ: Water that gives little lather is called

A) hard water
B) soft water
C) dirty water
D) clean water

MCQ: Water exists in how many different states on Earth?

A) one
B) two
C) three
D) four

MCQ: What is the percentage of water from oceans?

A) 0
B) 0.002
C) 0.006
D) 0.97

MCQ: The hardness which can be removed by boiling is called

A) permanent hardness
B) temporary hardness
C) stiffness
D) toughness

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