Importance of Water Multiple Choice Questions 12 PDF Download

Learn importance of water MCQs, grade 7 science test 12 for online courses learning and test prep, water treatment multiple choice questions and answers. Water treatment revision test includes science worksheets to learn for seventh grade science help.

Science multiple choice questions (MCQ) on alum is a compound of two elements, those are with options aluminum and sulfate, aluminum and nitrate, sodium and nitrate and sodium and sulfate, water treatment quiz for competitive exam prep, viva interview questions with answers key. 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, those are

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


MCQ. 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. 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. Largest sea on earth is

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