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Q. Describe Lime-soda method for softening of hard water. Discuss the advantages of the process and the chemistry involved in it.
What are the advantages of graphite furnace AAS? tell the history of graphite furnace AAS
Q. a. What is the origin of fossil fuels? b. List three fossil fuels. c. Are fossil fuels a renewable resource? Answer: a. Coal, natural gas and oil. b. Fossil fue
Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference (4) Photoelectric effect
Iso-electronic species is: (1) F - ,O -2 (2) F - , O (3) F - , O + (4) F - , O +2 Ans: F - ,O- 2
Harvesting techniques Many different harvesting techniques are used depending on the place of sale, the type of crop and the stage of maturity of the crop to be harveste
Describe the process involved inthe Dewar method of separation of inert gases?
what are the failure of octate rule
Q. Llimitations of werners theory? There were inherent limitations with such a simple approach. For example, the following experimental facts cannot be explained on the basis o
its important topics for class 11th
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