Multiple choice

Which of the following has an organic origin?

  1. Sand

  2. Sodium

  3. Nylon

  4. Coal
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coal is formed from ancient plant matter that was compressed and heated over millions of years, giving it an organic origin. Sand is inorganic (silica). Sodium is a chemical element. Nylon is a synthetic polymer made from petrochemicals, so while carbon-based, it's not naturally organic in origin like coal.

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