Which one of the following is a non-metallic mineral?
Correct answer C. Gypsum
Tip: press A, B, C or D to answer, and N for the next question.
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More Environmental Science questions
See allA moderator is used in nuclear reactor in order to?
Correct answer B. Slow down the speed of the neutrons
Which of the following atmospheric layers help in radio communication?
Correct answer B. Ionosphere
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The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?
Correct answer D. 8 days
Where do most of Asteroids lie?
Correct answer A. In asteroid belt between the orbits of Mars and Jupiter
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