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Question:
(a) Explain the precautions that should be taken by plant operators while handling chlorine gas used in disinfection of wastewater.
(b) Show why disinfection of sludge is important and list seven ways how disinfection of sludge can be achieved.
(c) In various countries, there are still concerns from experts and local communities about the environmental impact of incinerators. Consider the following two types of emissions produced by these waste treatment facilities:
(i) Gas phase emission (ii) Particulate emission
State one possible major problem associated with each emission. Provide relevant solutions to the problems stated.
What is the chemical formula for hard water?
Q. Composition of the nucleus Since the time of Rutherford, other scientists have learned a significant amount about the fundamental properties about the nucleus of an atom. In
An unknown amount of copper, at 95 degrees C,, is placed in 100 g of water at 20 degrees C. It reaches temperature equilibrium at 60 degrees C. What is the mass of the copper?
what are grignard reagants ? how are tthey prepared is laboratory ? what makes them so important in synthetic chemistry?
The valency of sulphur in sulphuric acid is: (1) 2 (2) 4 (3) 6 (4) 8 Ans: 6
Cis-1,3-di-tert-butylcyclohexane can exist in a chair conformation (A) in which both tert-butyl groups are equatorial. Though, in either chair conformation of trans-1,3-di-tert-bu
The series of elements involving the filling of 5f-orbitals is called actinoids series. They follow Ac (89) and include the fourteen elements from Th (90) and Lw (103). The chem
what is fractional distillation
Ask question #M How do you calculate exactly how much ammonia you get from certain pressure changes using the equilibrium equation? Tried writing the equation like this: 2(1+x)^
Q. Explain Valence Bond Theory? This concept starts with the assumption that the bond between the metal ion and the ligand is basically covalent in nature. In order to form a c
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