Trivia questions and answers, drawn fresh from the well

• Easy Easy difficulty.
• Earthquakes And Plate Tectonics

How many levels are in the Modified Mercalli earthquake-intensity scale?

Answer

12

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• Easy Easy difficulty.
• Earthquakes And Plate Tectonics

What magnitude scale did Charles Richter introduce in 1935 to measure earthquake size?

Answer

Richter scale

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• Hard Hard difficulty.
• The Human Body

Which human bone is the only one not directly connected to another bone?

Answer

Hyoid bone

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• Intermediate Intermediate difficulty.
• The Human Body

What was the first successful organ transplant between humans?

Answer

Kidney transplant

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• Hard Hard difficulty.
• The Human Body

Which cranial nerve is the longest in the human body?

Answer

Vagus nerve

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• Intermediate Intermediate difficulty.
• The Human Body

Which vitamin can human skin produce after ultraviolet B exposure?

Answer

Vitamin D

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• Hard Hard difficulty.
• The Human Body

Who discovered the human ABO blood group system?

Answer

Karl Landsteiner

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• Intermediate Intermediate difficulty.
• The Human Body

Which blood protein carries most oxygen in human blood?

Answer

Hemoglobin

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• Easy Easy difficulty.
• The Human Body

How many chromosomes are normally found in a human somatic cell?

Answer

46

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• Hard Hard difficulty.
• The Human Body

Which cranial nerve is the only one that exits from the back of the human brainstem?

Answer

Trochlear nerve

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• Intermediate Intermediate difficulty.
• The Human Body

What is the largest internal organ in the adult human body?

Answer

Liver

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• Intermediate Intermediate difficulty.
• The Human Body

Which part of the human eye controls the size of the pupil?

Answer

Iris

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