Class 7 Courses

Chapter 13: Class 7 Science Exam Tests

Class 7 Science MCQs - Chapter 13

Importance of Water Quiz Questions & Answers PDF Download - 11

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Importance of Water Exam Questions and Answers PDF Download: Test 11

MCQ 51:

To prevent excess use of tap water, we can collect

  1. rain water
  2. stream water
  3. river water
  4. sea water
MCQ 52:

The unwanted substance of water may be harmful for

  1. plants
  2. animals
  3. plants, animals and people
  4. plants and people
MCQ 53:

Polio, hepatitis and typhoid are examples of

  1. water-borne diseases
  2. water-washed diseases
  3. water-related diseases
  4. anti-water diseases
MCQ 54:

Which gas is often used as a energy source at the city's wastewater treatment plants?

  1. ethane
  2. carbon
  3. methane
  4. nitrogen
MCQ 55:

The removal of salt from water on a large scale is known as

  1. water logging
  2. salination
  3. desalination
  4. distillation

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Importance of Water App (Android & iOS)

Importance of Water App (Android & iOS)

7th Grade Science App (Android & iOS)

7th Grade Science App (iOS & Android)

8th Grade Science App (Android & iOS)

8th Grade Science App (Android & iOS)

6th Grade Science App (Android & iOS)

6th Grade Science App (iOS & Android)