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5. Which one of the following is not a characteristic of phylum: Annelida 1) Closed circulation2) Segmentation3) Protonephridia4) Ventral nerve cord​

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tion:Physical Adsorption or PhysisorptionThe characteristics of physisorption are: There is no specificity as any GAS can be adsorbed ONTO the surface. It has been observed that highly liquifiable gases are physically adsorbed more STRONGLY. It is reversible in nature and is dependent on pressure as well as TEMPERATURE.



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