TorF) Chemicals, elements or compounds that have an aesthetic or cosmetic effect

Question

TorF) Chemicals, elements or compounds that have an aesthetic or cosmetic effect on the public, and no health effects, are not regulated at all by federal regulators, only state regulators 6. Disinfection by-products (DBP's) are tasteless and odorless and include both known and DBP's are formed when ultraviolet light used for disinfection reacts with natural organic One of the best ways to control DBP's is to remove calcium and magnesium (hardness) 7. TorF potential carcinogens 8. TorF matter 9. TorF from the water prior to disinfection.

Explanation / Answer

6. FALSE, because all foods,drugs and cosmetics in the US are regulated by federal laws or FDA regulations.

7.TRUE , see properties of DBPs

8. TRUE , however they are secondary formations.

9. False , actually this was done earlier , nowadays nanoinfiltration (includes TOC removal, softening and removal of organic compounds) gives better results than the conventional method and also it's one of the most cost effective methods.

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