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| 1. |
The best absorbent for CO2 is : (a) NaOH (b) NaO (c) H2SO4 (d) water |
| Answer» <p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Correct option (a) NaOH</strong></span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000"><strong>Explanation:</strong></span></span></p><p style="text-align: justify;"><span style="font-family:Arial,Helvetica,sans-serif"><span style="color:#000000">CO<sub>2</sub> is best absorbed by NaOH. CO<sub>2 </sub>is absorbed by alkali to give salts.</span></span></p>A carbon dioxide scrubber is a device which absorbs carbon dioxide (CO2). It is used to treat exhaust gases from industrial plants or from exhaled air in life support systems such as rebreathers or in spacecraft, submersible craft or airtight chambers. Carbon dioxide scrubbers are also used in controlled atmosphere (CA) storage. They have also been researched for carbon capture.<br><br>NaOH can be used to absorb carbon dioxide. NaOH reacts with CO2 and produces sodium carbonate (salt) and water and helps to reduce bad effects of carbon dioxide<br><br>CO2 + NaOH → Na2CO3 + H2O | |