Importance of Water Multiple Choice Quiz Questions 12 pdf Download

Practice science quiz 12 on importance of water MCQs, grade 7 water treatment multiple choice questions. Free water treatment guide has science worksheet with answering options aluminum and sulfate, aluminum and nitrate, sodium and nitrate and sodium and sulfate of multiple choice questions (MCQ) with water treatment quiz as alum is a compound of two elements, that are for exam prep. Study to learn water treatment quiz to attempt multiple choice questions based test.

MCQs on Importance of Water - Quiz 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