High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to________?

Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre)?

The excess air required for the combustion of pulverized coal is of the order of about ________ percent?

In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO2 to SO3 is accomplished by a ________ reaction?

________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals?

Cracking is________?