Question 6 of 20 5.0 Points Despite the discontinuation of the use of __________

Question

Question 6 of 20

5.0 Points

Despite the discontinuation of the use of ________________   in gasoline sold in the U.S., there are still relic groundwater concerns due to equipment failures and installation mistakes.

Question 7 of 20

5.0 Points

An underground storage tank (UST) includes any tank and any underground piping connected to the tank having at least one-quarter of its volume below ground.

False

Question 9 of 20

5.0 Points

Consider the many forms of water pollution, including physical, chemical, and biological forms. Check the box(es) below that represent forms of water pollution.

A. Sediment or suspended matter

B. Heat

C. Inorganic plant nutrients

D. Disease-causing agents

E. Soluble inorganic materials

Question 11 of 20

5.0 Points

Since nearly half of all Americans use groundwater as their drinking water supply, the approximately _________ leaking underground storage tanks (USTs) nationwide that store petroleum or hazardous substances are of concern in regards to the protection of human health.

A. <250,000

B. >600,000

C. 400,000-600,000

D. 250,000-400,000

Question 13 of 20

5.0 Points

Nonpoint source pollutants comprise the largest source of water pollution, contributing some ~65% of the contamination in quality-impaired streams and lakes.

False

Question 15 of 20

5.0 Points

Runoff is an example of a point source pollutant, since it originates on land and can be easily traced back to the source of pollution like a farm field or automobile.

False

Question 19)The use of________________ as a disinfectant in drinking water can be thought of as a trade-off between the short-term protection of human health from waterborne diseases and the long-term health concerns that disinfection byproducts cause cancer in humans.

Question 20 of 20

5.0 Points

In 1968, the U.S. EPA Science Advisory Board suggested that exposure to microbial contaminants, like bacteria, viruses, and protozoa, represented a minor health risk for drinking water quality.

True

False

Question 9 of 20

5.0 Points

Consider the many forms of water pollution, including physical, chemical, and biological forms. Check the box(es) below that represent forms of water pollution.

A. Sediment or suspended matter

B. Heat

C. Inorganic plant nutrients

D. Disease-causing agents

E. Soluble inorganic materials

Question 11 of 20

5.0 Points

Since nearly half of all Americans use groundwater as their drinking water supply, the approximately _________ leaking underground storage tanks (USTs) nationwide that store petroleum or hazardous substances are of concern in regards to the protection of human health.

A. <250,000

B. >600,000

C. 400,000-600,000

D. 250,000-400,000

Question 13 of 20

5.0 Points

Nonpoint source pollutants comprise the largest source of water pollution, contributing some ~65% of the contamination in quality-impaired streams and lakes.

True

False

Question 15 of 20

5.0 Points

Runoff is an example of a point source pollutant, since it originates on land and can be easily traced back to the source of pollution like a farm field or automobile.

True

False

Question 19)The use of________________ as a disinfectant in drinking water can be thought of as a trade-off between the short-term protection of human health from waterborne diseases and the long-term health concerns that disinfection byproducts cause cancer in humans.

Question 20 of 20

5.0 Points

In 1968, the U.S. EPA Science Advisory Board suggested that exposure to microbial contaminants, like bacteria, viruses, and protozoa, represented a minor health risk for drinking water quality.

True False

Explanation / Answer

Q.6:-Generally to oxygenate gasoline we use various products but in USA methyl tert butyl ether(MTBE) is mixed with gasoline as MTBE mixes with water quite easily so it pollutes ground water because of leakage.

Q.7:-As per rule an under ground storage tank includes any underground piping connected to the tank having at least 10% of its volume below ground.So one quarter is false.

Q.9:-Suspended matter:-As we know in rain water we find many such sediments mixed with water forming a brown colour of water.

Inorganic nutrients:- Phosphorous,nitrogen and fertilizer chemicals are of this kind so it pollutes water.

Disease causing agents:-Its a obvious choice as we know polluted water causes health problems.

Soluble inorganic matters:-we have different parameters for determining the solubility but it causes water pollution.

Q.11:-As per a article approximately 558000 UST are there for storage so the answer would be C.

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