Importance of Water Multiple Choice Questions 13 PDF Download

Practice importance of water MCQs, grade 7 science test 13 for online courses learning and test prep, sewage system multiple choice questions and answers. Sewage system revision test includes science worksheets to learn.

Science multiple choice questions (MCQ) on in sewage treatment plants, large material is removed by with options grit tank, metal screen, sludge tank and filter bed, sewage system quiz for competitive exam prep, viva interview questions with answers key. 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 material is removed by

  1. metal screen
  2. grit tank
  3. sludge tank
  4. filter bed

A

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

D

MCQ. The population which does not have tap water in their homes, is

  1. two-third of the world population
  2. one-third of the world population
  3. half of the world population
  4. quarter of the world population

A

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

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

C

MCQ. 'Distillation' can also be used to treat

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

C