Data obtained from alkalinity is used for following engineering practices.
a : Chemical coagulation of water and waste water
b : Water softening
c : Corrosion control
d : All of the above

Majority of mineral water supplied is mostly
a : Acidic
b : Neutral
c : Alkaline
d : None of the above

Alkalinity measurements are used in the interpretation and control of waste water treatment process.
a : False
b : True

Why does the procedure call for a sample containing no more than 60 mg of Mg²⁺?

Why is the solution acidified with HCl before adding the precipitant?

Why is the acid–base indicator methyl red added to the solution?

Explain why forming Mg(PO₃)₂ instead of Mg₂P₂O₇ increases the precipitate’s mass.

What additional steps, beyond those discussed in questions 2 and 3, help improve the precipitate’s purity?

Why is the precipitate rinsed with a solution of 5% v/v NH₃?

Which of the following is not a type of Spectroscopy?
a) Gamma ray
b) X ray
c) Nuclear magnetic resonance
d) Sound

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