Importance of Water Multiple Choice Questions 20 PDF Download

Practice importance of water MCQs, grade 7 online science test 20, safe and drinking water multiple choice questions and answers. Safe and drinking water revision test has science worksheets, helping answer key with choices as fungi, algae, bacteria and viruses of multiple choice questions (MCQ) with safe and drinking water quiz as hot water also stimulates growth of for competitive exam prep, viva interview questions. Free science study guide to practice safe and drinking water quiz to attempt multiple choice questions based test.

MCQs on Importance of Water Quiz PDF Download Worksheets 20

MCQ. Hot water also stimulates the growth of

  1. algae
  2. fungi
  3. bacteria
  4. viruses

A

MCQ. The number of 'oceans' on earth is

  1. 4
  2. 5
  3. 6
  4. 7

B

MCQ. Feces and urine is also part of

  1. garbage
  2. treated waste
  3. untreated waste
  4. all of them

C

MCQ. On earth percentage of fresh water is

  1. 0.03
  2. 0.05
  3. 0.1
  4. 0.2

A

MCQ. The solid matter settled at the bottom is scraped away by electricity in

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

C