Q 1: A bio-degradable detergent is one which,
Q 2: Hydrogenation of edible oils is done to,
Q 3: A fertilizer is rated as 10-12-15. What does it mean?
Q 4: In the manufacture of sulphuric acid why is the absorption of SO3 done in concentrated sulphuric acid and not in water?
Q 5: A dilute solution (20 %) of nitric acid has to be concentrated to 80 %. How is this done in industry and why?
Q 6: A dilute solution of glycerin contains a soluble calcium salt as an impurity. Why is the removal of calcium essential before the concentration of this solution? How can this removal be accomplished?