11th engineering

Which of these solutions for water pollution uses UV (Ultra violet technology)

• Septic tanks

• Water efficient toilets

• Ozone wastewater treatment

Water efficient toilets aim at using ___________of water

• 1.0 to 2.0 gallons

• 0.8 to 1.6 gallons

• 2 to 2.5 gallons of water

The Energy efficiency formula is

• OUTPUT OVER INPUT *100

• INPUT OVER OUTPUT *100

• INPUT OVER OUTPUT

The unit of measure of the brighteness of a lightbulb is

• watts

• gallons

• lummens

Energy efficiency is different from conservation because

• the second focuses on environmental awareness and the first on the consumer

• the second focuses on consumer and the first on technology

• the second focuses on technology and the first on the consumer

Denitrification is

• is the direct conversion of nitrate to nitrogen.

• is the direct conversion of nitrogen to nitrate.

Denitrification is

• is the direct conversion of nitrate to nitrogen.

• is the direct conversion of nitrogen to nitrate.

Denitrification is

• is the direct conversion of nitrate to nitrogen.

• is the direct conversion of nitrogen to nitrate.

Reverse osmosis allows us to

• Purify water by removing fungus and bacteria

• Purify water by removing ions, unwanted molecules and larger particles

• Purify water by filtering in a septic tank

Reverse osmosis allows us to

• Purify water by removing fungus and bacteria

• Purify water by removing ions, unwanted molecules and larger particles

• Purify water by filtering in a septic tank