Discuss the Nalgonda method of fluoride removal.

Discuss the general methods of preparation of alkyl halides.

Discuss the general methods of preparing alkanes.

Explain the terms hard water and soft water. Write a note on the (ii) Calgon method for the removal of hardness of water.

Discuss the methods of determining the order of reaction .

Discuss the Ramsay's methods of isolation of noble gases.

Discuss Cottrell's method of evaluating elevation of boiling points.

Which of the following methods is used for the removal of temporary hardness of water?