Write critical notes on the following:
Ground water depletion and ways for its replenishment.

Write critical notes on the following: Eutrophication

Write critical notes on the following: Biomagnification

Write a note on the following:Enantiomers

Write a note on the following: Racemic mixture.

Write reason for the following: Soft water lathers with soap but not hard water.

Write a short note about the following. A.Sedimentation and Decantation b. Filteration

Write reason for the following: Temporary hardness of water can be removed by boiling.

Write the type of system in each of the following: a) Hot water taken in an open vessel b) Hot water taken in a closed metallic vessel c) Hot water taken in a thermos flask

Write short notes on the following: i)Carbylamine reaction ii) Diazotisation iii) Hoffmảnn's bromamide reaction iv) Coupling reaction v) Ammonolysis vi) Acetylation vii) Gabriel phthalimide śynthesis.