Which of the following statements is not true about RNA?

Enthalpy of sublimation of iodine is 24 cal g^–1 at 200 ^oC. If specific heat of I₂(s) and l₂ (vap) are 0.055 and 0.031 cal g^–1K ^–1 respectively, then enthalpy of sublimation of iodine at 250 ^oC in cal g^–1 is :

Peptization is a :

The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively, are :