WorksheetsChemistry Quiz
Total questions: 10
Worksheet time: 6mins
Treatment of wastewater involves_____,_____ and ______ processes, which remove physical and biological matter that contaminates the wastewater.
solid, liquid, gas
physical, chemical, biological
bar screen, bar graph, bar can
large objects like rags, sticks, cans, plastic cans, napkins are removed through
bar screen
bar graph
bar scale
bar waste
Solids like feaces settle at the bottom are removed with a scraper. this is the____
bar graph
chlorine
ozone layer
sludge
sometimes it maybe necessary to disinfect with chemicals like ____ and ____before releasing it into the distribution system
chlorine
sludge
scraper
ozone
List the ways to protect and conserve water
Which of the following is a way to conserve water
turn on the water while brushing.
throw cooking oils and fats down the drains.
water only the dry spots of the lawn and the plants that needed.
take showers without using buckets.
The three R's are ____, _____ and ______
(a)
What would you do if you find your neighborhood tap leaking?
One should keep waste____ at home.
minimum
maximum
____ trees should be planted all along the sewage ponds.
Oak
Neem
Eucalyptus
Acacia
