Science quizzes

10 quizzes of 10 science questions (general knowledge), 100 questions in all and more added as the bank grows. 20 seconds a question. Open a quiz to see what is in it; log in to play, see the right answers and keep your score.

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All Science quizzes

Science practice questions with answers

Five from this category, new every day.

  1. Question 1

    Which hormone is secreted by the pineal gland?

    • A.Insulin
    • B.Thyroxine
    • C.Adrenaline
    • D.Melatonin
    Show answer

    D. Melatonin

  2. Question 2

    Which gas do plants absorb from the atmosphere?

    • A.Hydrogen
    • B.Nitrogen
    • C.Oxygen
    • D.Carbon Dioxide
    Show answer

    D. Carbon Dioxide

  3. Question 3

    How many bones are in the human adult body?

    • A.226
    • B.206
    • C.246
    • D.186
    Show answer

    B. 206

  4. Question 4

    What is the chemical formula for table salt?

    • A.MgCl
    • B.NaCl
    • C.KCl
    • D.CaCl
    Show answer

    B. NaCl

  5. Question 5

    How many bones are there in an adult human body?

    • A.186
    • B.206
    • C.246
    • D.226
    Show answer

    B. 206

More general knowledge quizzes