Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Rahul kumar Best Answer
Ans (B) Increased soluble CO2 increases acidity With depth the concentration of CO2 increases in seawater (shown in attached figure). CO2 combines with water (H2O) to form carbonic acid (H2CO3) responsible for the dissolution of calcite.
can option d be the answer because with depth increasing hydrostatic pressure increases?which makes CaCO3 unstable
No, actually CCD is defined according to the concentration of CO2 in water. The depth of CCD changes from place to place because concentration of CO2 changes accordingly; however hydrostatic pressure remains same.