<prompt> Composition of soda lime includes all except -NaOHKOHCa OH2Mg OH2  <response>: Ans. is d i.e., Mg OH2 Soda limeo Most commonly used CO2 absorbent. The composition of Soda lime is: -CaOH2-94NaOH-5 CatalystKOH-1Silica-To prevent dust formationIndicator Moisture Granule size-4-8 mesho 100 gm of sodalime can absorb upto 23 litres of CO2. Now a days a good quality sodalime with prolonged life, Durasorb is used which is pink when fresh and becomes white when exhausted. 