Naphthalene : Coal tar : : Dyes : ___________?
Correct answer: A. Petroleum
- A. Petroleum
- B. Oils
- C. Chemicals
- D. Carbon
Explanation
Naphthalene is obtained from coal tar, just as many synthetic dyes are produced from petroleum-derived chemical compounds. Chemicals is too broad because it names the material category rather than the usual source.
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