Importance of Water Multiple Choice Questions Test 13 Tests pdf Download

Practice science test 13 on importance of water MCQs, grade 7 sewage system multiple choice questions and answers. Sewage system revision test has science worksheets, answer key with choices as grit tank, metal screen, sludge tank and filter bed of multiple choice questions (MCQ) with sewage system quiz as in sewage treatment plants, large materials are removed by for competitive exam prep. Free science study guide to learn sewage system quiz to attempt multiple choice questions based test.

MCQs on Importance of Water Quiz pdf Download Worksheets 13

MCQ. In sewage treatment plants, large materials are removed by

  1. Metal screen
  2. Grit tank
  3. Sludge tank
  4. Filter bed


MCQ. Desalination plants are used to convert

  1. hot water to cold water
  2. cold water to hot water
  3. tasteless water to salty water
  4. salty water to tasteless water


MCQ. Population which does not have tap in their homes is

  1. Two-third of world population
  2. One-third of world population
  3. half of world population
  4. quarter of world population


MCQ. Water can be kept clean by detergents, if they are

  1. not poisonous
  2. odorless
  3. biodegradable
  4. non-biodegradable


MCQ. Distillation can also be used to treat

  1. fresh water
  2. sewage water
  3. polluted water
  4. rain water