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Select the Word or Phrase That Best Matches the Definition

question 12

Multiple Choice

Select the word or phrase that best matches the definition or example.
-Conflict between the Front for the Liberation,a Marxist party that controlled the country's newly independent government,and the National Resistance,the opposition party supported by threatened white-ruled regimes in neighboring countries,that erupted into civil war in 1977.Altogether,1 million or more people were killed and another 5 million were displaced,accounting for nearly half of the country's population.The fighting ended by the end of the 1980s,and in the early 1990s,the country emerged as a democratic state.


Definitions:

Dimethyl Ether

Dimethyl ether is a colorless gas used as an aerosol propellant and a refrigerant, with the chemical formula CH3OCH3.

H-F

Hydrogen fluoride, a chemical compound consisting of hydrogen and fluorine, known for its use in industrial processes and its high toxicity.

Molecules

The smallest units of a chemical substance that retain their unique chemical identity.

Higher Boiling

Referring to a substance with a higher boiling point compared to another substance, often used to differentiate between similar compounds in purification processes.

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