Nc Waste Water and Their Impact

Water that has been used in the home, in a business, or as part of an industrial process and also which is unclean is called

When is World Water Day celebrated?

• May 22

• June 23

• March 22

• March 12

Which of these create water pollution?

• 
• 
• 

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

Which is the first process of Wastewater Treatment Plant(WWTP)?

• Bar screen

• Grit and sand removal tank

• Water clarifier

• Aerator

Any 1 method of reducing water pollution.

Tags

NGSS.MS-ESS3-3

Water that is not fit for use is called

• clean water

• wastewater

• both (a) and (b)

• none of these

Which of the following is not a source of wastewater?

• Industries

• Homes

• Sewers

• Hospitals

The period of International Decade for action on ‘Water for Life’ is

• 2000-2010

• 2005-2015

• 2010-2020

• 2003-2013

The process of removing pollutants in water before it enter a water body is called

• cleaning of water

• refining

• filtering of water

• none of these

Suspended impurities contained by sewage are called

• contaminants

• sludge

• grey water

• none of these