The ash produced from coal-fired plants is
A) non-toxic and useful in paving roads and producing cement-like products.
B) voluminous, highly toxic and needs special impoundment technology.
C) currently released slowly into rivers, lakes, and oceans.
D) concentrated into pellets and used for fuel.
B
You might also like to view...
In toxicology studies, the threshold level of a chemical is the dose of the chemical ________
A) above which at least 50% of the organisms being tested died B) below which there is a measurable decline in the health of the organism being tested C) below which at least 50% of the organisms being tested died D) above which there is a measurable decline in the health of the organism being tested
Which of the following is most likely a basic economic activity?
A) video rental store B) grocery store C) gas station D) steel mill E) travel agency
If a carbon atom is a stereocenter, which of the following statements must be true about that carbon?
A) It has four single bonds. B) It has a double bond and two single bonds. C) It has two double bonds. D) Any of these bonding arrangements can be associated with a stereocenter.
The slow, subsurface cooling of magma into various types of intrusive igneous rock masses is called ____
a. pahoehoe b. pyroclastic c. plutonism d. effusive eruption e. volcanism