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    Learn English > English lessons & exercises > Chemistry and the environment > Stats updated every 4 hours
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    Exercise "Chemistry and the environment", created by val92 (a free exercise to learn English):
    Results of the 1 908 people who have taken this test:
    Average mark: 59 / 100 Share

    Latest member with a 100/100 (perfect mark): girly54 / FRANCE, on Wednesday 17 October - 14:03:
    "Great !"

    They got a perfect mark

    Stats (1907 candidates)
    Question 1 passed: 70 %
    Chemistry is a * that is useful in many different industries.

    Question 2 passed: 56.2 %
    Chemical * is very important for improving human conditions

    Question 3 passed: 60.9 %
    but most people have a negative image of chemistry because of the * that is generated by this industry.

    Question 4 passed: 55.5 %
    Fortunately, nowadays, the chemical industry takes better care of the * although it still sometimes pollutes it.

    Question 5 passed: 53.2 %
    Chemists know that experiments must be done in * for safety reasons because

    Question 6 passed: 53.4 %
    mixing different chemicals under certain conditions will cause a chemical * to occur.

    Question 7 passed: 46.5 %
    Some substances can be hazardous to * and cause injury or even cancer.

    Question 8 passed: 47.5 %
    You must wear * to protect your eyes if you handle chemicals.

    Question 9 passed: 58.2 %
    Additionally, it's a good idea to put on * to protect your hands.

    Question 10 passed: 58.8 %
    In some cases, you must wear a * to avoid inhaling dangerous substances.

    Question 11 passed: 79.3 %
    In a way, chemistry is like * because you mix and heat various ingredients according to a recipe.

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