Class 10 Chemistry MCQs - Chapter 7
Environmental Chemistry II Water Multiple Choice Questions (MCQ) PDF - 4
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Environmental Chemistry II Water Questions & Answers PDF Download: MCQ Quiz 4
MCQ 16: Which of the following is the most abundant salt in seawater?
- magnesium chloride
- calcium chloride
- sodium chloride
- sodium nitrate
MCQ 17: Which of the following is a disease in which excess of bile from the liver enters the blood and causes yellowness of skin and eyes?
- cholera
- dysentery
- jaundice
- hepatitis
MCQ 18: Property due to which water acts as a universal solvent is its
- polarity only
- ability to make hydrogen bond only
- strong dipole dipole interaction
- polarity and ability to make hydrogen bond
MCQ 19: What is the first step of raw water treatment?
- sedimentation
- coagulation
- filtration
- chlorination
MCQ 20: The fourth step of sewage water treatment is called
- primary sewage treatment
- secondary sewage treatment
- activated sludge treatment
- chlorination
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