An example of a grad-school level question?
Which of these is the chemical symbol for magnesium?

I just took a test in school today. What question was I asked?

Question I was asked: What causes a person to have blue eyes?

Random question?

About how often is a full moon observed from Earth's surface?

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Question generated: Conjugation in a paramecium differs from sexual reproduction in volvox because conjugation

Problem: Write a question you would see in a school textbook.

Answer: Water at 20C in an uncovered pan is evaporating very slowly. What could be done to the water to make it evaporate more quickly?

Problem: Write a question you would see in a school textbook.

Answer:
Which of these is a safe practice in a laboratory investigation when working with chemicals?