Which of the following statements are correct ? (I) Among the species CO, CO_2, CO_3^(2-)and HCHO, CO_3^(2-)has the weakest carbon-oxygen bond. (II) Both Sphalerite and galena ores can be concentrated by froth floatation process. (III) Bosch process involves the process of coke at 1273 K. (IV) Heavy water differs only slightly from ordinary water in its chemical properties through the reaction of D_2O are slightlyfaster than those of H_2O.

Which of the following statements are correct ? (I) Among the species

1.	Which of the following statements are correct ? (I) Among the species CO, CO_2, CO_3^(2-)and HCHO, CO_3^(2-)has the weakest carbon-oxygen bond. (II) Both Sphalerite and galena ores can be concentrated by froth floatation process. (III) Bosch process involves the process of coke at 1273 K. (IV) Heavy water differs only slightly from ordinary water in its chemical properties through the reaction of D_2O are slightlyfaster than those of H_2O.
Answer» I, II, IV II, III I,III I,II,III Answer :D