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Question 1:
a. Describe in details the composting process.
b. Odour is very often a big problem in composting facilities. Describe some odour avoidance and odour treatment strategies that can be adopted to mitigate this problem.
Question 2:
a. Describe why biological processes are preferred to physico-chemical processes for the removal of nitrogen in waste water.
b. Show the impacts of discharging effluents having high nitrogen content in the environment.
c. Show why disinfection of sludge is important and list 7 ways how disinfection of sludge can be achieved.
The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.
Q. Determine the taste threshold for different sensations? • perceive the individual differences existing for taste stimulation, and • identify your own threshold and iden
The galvanic cells in which electrodes are made of same metal but they are immersed in the electrolytes of different concentrations in two half cells are called concentration cells
Drying - Chemical Properties of oils and fats Some fixed type of oils, containing glycerides of unsaturated fatty acids comprising two or three double bonds have the trend of s
whatdo you mean by gravitational force constant ?
The frequency of an electromagnetic radiation is 2x 10 6 Hz. . What is its wavelength in metres : (Velocity of light = 3x10 8 ms -1 ) (1)6.0x 10 14
What are laws of crystallography? How does it help in study of crystal structure
Chemical Properties Proteins - Salt formation (i) Salt formation : Due to existence of both -NH 2 and -COOH groups in proteins, they make salts along with acids and bases.
The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10 (2) 1 (3) 0 (4)5 Ans: 0
The nucleus of an element contains 9 protons. Its valency would be : (1) 1 (2) 3 (3) 2 (4) 5 Ans: 1
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