Answer the following problems

problem 1) prepare a short note on the unique properties of water and the various structures of liquid water.

problem 2) What are the USPH and ISI standards of drinking water?

problem 3) What kind of properties are considered for boiler feed waters and irrigational water?

problem 4) describe the Spectrometric determination of Nitrites in a water sample.

problem 5) What is the importance of ‘Dissolved Oxygen’? Describe.

problem 6) What are COD and BOD ?

problem 7) Describe the importance of COD over BOD

problem 8) prepare notes on:

(i) Receptor,

(ii) Sink,

(iii) Path way of pollutant,

(iv) threshold limit Value.

problem 9) describe the structure of earth.

problem 10) What are the different minerals obtained in the earth crust and their significance with reference to metallurgy?