Coal Can Be Cleaned Before It Is Burned

question 128

Multiple Choice

Coal can be cleaned before it is burned.The flotation method separates coal from its major impurities by taking advantage of the difference in ________ of these materials.

• A)acidity
• B)combustion
• C)density
• D)volatility

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Definitions:

Ponzi Scheme

An investment scam where returns are paid to earlier investors using the capital of newer investors, rather than from profit earned.

Fraudulent Investment

An investment scheme where deceit or trickery is used to convince investors to participate, often resulting in loss of investment due to misrepresentation.

New Capital

Funds or assets newly invested in a business or company for the purpose of expansion, development, or improvement of operations.

Securities And Exchange Commission

A U.S. federal agency responsible for enforcing federal securities laws, regulating the securities industry, the nation's stock and options exchanges, and other related activities and organizations.