Importance of Water Multiple Choice Questions 12 PDF Download

Practice importance of water MCQs, grade 7 online science test 12, water treatment multiple choice questions and answers. Water treatment revision test has science worksheets, helping answer key with choices as aluminum and sulfate, aluminum and nitrate, sodium and nitrate and sodium and sulfate of multiple choice questions (MCQ) with water treatment quiz as the alum is a compound of two elements, those are for competitive exam prep, viva interview questions. Free science study guide to practice water treatment quiz to attempt multiple choice questions based test.

MCQs on Importance of Water Quiz PDF Download Worksheets 12

MCQ. The alum is a compound of two elements, those are

  1. aluminum and nitrate
  2. aluminum and sulfate
  3. sodium and nitrate
  4. sodium and sulfate


MCQ. The most essential element for crop is

  1. water
  2. fertilizers
  3. soil
  4. humidity


MCQ. If not receives treatment, trachoma may cause

  1. deep eye infection
  2. eye injuries
  3. blindness
  4. dizziness


MCQ. The reason for presence of water underground is

  1. oceans make tunnels due to high water pressure
  2. due to salt in water, it starts making space in the soil for movement
  3. some of the rain water is soaked into soil
  4. rivers eventually run underground


MCQ. The largest sea on the earth is

  1. Arabian sea
  2. South China sea
  3. Mediterranean sea
  4. Dead sea