Class 10 Chemistry MCQs - Chapter 7

Environmental Chemistry II Water MCQ (Multiple Choice Questions) PDF - 6

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The MCQs: What happens to water on cooling; "Environmental Chemistry II Water" App Download Android & iOS (Free) with answers it contracts up to 4 °c, it expands up to 4 °c, it expands up to 2 °c and it contracts up to 2 °c to learn online classes courses. Practice properties of water quiz questions, download Apple Book (Free Sample) for virtual online school.

Environmental Chemistry II Water Questions & Answers PDF Download: MCQ Quiz 6

MCQ 26: What happens to water on cooling?

A) it expands up to 4 °C

B) it contracts up to 4 °C

C) it expands up to 2 °C

D) it contracts up to 2 °C

MCQ 27: Out of total the amount of water available for human use is

A) 0.003

B) 0.002

C) 0.4

D) 0.5

MCQ 28: What is the percentage of atmospheric water?

A) 0

B) 0.002

C) 0.006

D) 0.021

MCQ 29: Step of sewage water treatment in which some of the solids are removed as sludge is called

A) primary sewage treatment

B) secondary sewage treatment

C) activated sludge treatment

D) chlorination

MCQ 30: The second step of sewage water treatment is called

A) primary sewage treatment

B) secondary sewage treatment

C) activated sludge treatment

D) chlorination

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