11/8/2017 11:30 AM 7.1/15 Gradebook Calculator Periodic Table Question 12 of 16

Question

11/8/2017 11:30 AM 7.1/15 Gradebook Calculator Periodic Table Question 12 of 16 Map Sapling Learning macmillan learning this question has been customized by Ed Lee at Texas A&M; University Determine which statements below are true and which are false PAH are natural products that are produced by many species of plants true O false PAH are produced in the combustion of wood and tobacco true false PAH are commonly found in industrial wastewater true false PAH are common, harmless chemicals found in air and municipal water sources true false 6 Previous e Check Answer Next HExit Hint

Explanation / Answer

Ans 1 : False

PAH are polycyclic Aromatic hydrocarbons that are fomed as a result of burning of organic materials. They are not the natural products of plant species.

Ans 2 : True

PAH are formed as a result of incomplete combustion of organic materials. These materials can be coal , tobacco , wood etc.

Ans 3 : True

PAHs are produced as a result of incomplete combustion of organic substances which are present in air , waste water , soil etc.

Ans 4 : False

Though PAHs are found commonly in waste water , air and soil etc , but they are not harmless. They can cause damage to eyes , kidney , liver etc. They may also induce cancer in people.

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