Importance of Water Multiple Choice Questions Test 12 Tests pdf Download

Practice science test 12 on importance of water MCQs, grade 7 water treatment multiple choice questions and answers. Water treatment revision test has science worksheets, 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, that are for competitive exam prep. Free science study guide to learn water treatment quiz to attempt multiple choice questions based test.

MCQs on Importance of Water Quiz pdf Download Worksheets 12

MCQ. Alum is a compound of two elements, that are

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


MCQ. Most essential component for crops is

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


MCQ. If remained untreated, trachoma may cause

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


MCQ. Reason of water being under ground is

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


MCQ. Largest sea on earth is

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