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SSC MTS 2022 PYQ — Question 36

SSC MTS - 15 July 2022 - Shift 2 • General Awareness • Q36

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Ocean acidification is the ongoing decrease in the pH of the Earth’s oceans, caused by the uptake of ______________ from the atmosphere.

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Correct answer: B

Explanation

The correct answer is Option 2 i.e. carbon dioxide.

  • Ocean acidification refers to a reduction in the pH of the ocean over an extended period of time, caused primarily by uptake of carbon dioxide (CO2) from the atmosphere.

  • The ocean absorbs about 30 percent of the CO2 that is released in the atmosphere, and as levels of atmospheric CO2 increase, so do the levels in the ocean.

  • When CO2 is absorbed by seawater, a series of chemical reactions occur resulting in the increased concentration of hydrogen ions.