Environmental Chemistry II Water Multiple Choice Questions and Answers 1 PDF Download

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MCQs on Environmental Chemistry II Water Worksheets 1 Quiz PDF Download

MCQ: Ratio of hydrogen (H) and oxygen (O) in water molecule by volume is

  1. 2: 1
  2. 1: 2
  3. 3: 1
  4. 4: 1

A

MCQ: What is fourth step of raw water treatment?

  1. Sedimentation
  2. Coagulation
  3. Filtration
  4. Chlorination

D

MCQ: Hardness that cannot be removed by boiling is called

  1. Temporary hardness
  2. Permanent hardness
  3. Both A and B
  4. None of these

B

MCQ: Density of water becomes maximum at

  1. 10°C
  2. 4°C
  3. 5°C
  4. 12°C

B

MCQ: Step of sewage water treatment in which sewage is placed in tanks and aerated with large blowers is called

  1. Primary sewage treatment
  2. Secondary sewage treatment
  3. Activated sludge treatment
  4. Chlorination

C