McqMate
| Q. |
The most abundant element in the earth's atmosphere is – |
| A. | Argon |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Krypton |
| Answer» B. Nitrogen | |
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Explanation: The most abundant gas in the Earth's atmosphere is nitrogen. Nitrogen makes up 78 percent of the Earth's atmosphere, and it is a permanent gas, which means that its percentage does not change on a daily basis. The rest of the atmosphere is made up of 21 percentoxygen, 0.9 percent argon and 0.1 percent trace gases. |
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