NCERT Class VII Science Solutions: Chapter 18-Wastewater Story Part 1

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Question 1:

Fill in the blanks:

  1. Cleaning of water is a process of removing ____________.

  2. Wastewater released by houses is called ____________.

  3. Dried ____________ is used as manure.

  4. Drains get blocked by ____________ and ____________.

Answer:

Cleaning of water is a process of removing pollutant.

As showing in images is a pollutant.

Pollutant.

As showing in images is a pollutant.

Wastewater released by houses is called sewage.

As showing in images is a sewage.

Sewage.

As showing in images is a sewage.

Dried sludge is used as manure.

As showing in images is a result for sludge

Result for Sludge

As showing in images is a result for sludge

Drains get blocked by oils and fats.

As showing in images is a result for oils and fats

Result for Oils and Fats

As showing in images is a result for oils and fats