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Q. Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt
Effects of substituents on the acidity of phenols: Existence of electron attracting group, (for example -NO 2 , -X, - NR + 3 , -CN, -CHO, -COOH) on the benzene ring increases
Q. What is the Electrometallurgy? The above two metallurgical processes, namely pyrometallurgy and hydrometallurgy can be used in the extraction of a fairly large number of met
Which of the following two compounds would you wait for to have a greater dipole moment? Support your reply by writing the corresponding (plausible) resonance structures.
Q. What are the types of emulsions? Emulsions can be of three types: 1) Temporary emulsion: These require vigorous shaking just before they are used, as they separate out e
For which of the following sets of four quantum numbers, an electron will have the highest energy: n l m s
Physical Properties of Acetic Acid (a) It is a colourless, at ordinary temperature, corrosive liquid along with a sharp pungent odour of vinegar. It has a sour taste. (b) Be
describe vesper theory?
In any atom which sub-shell will have the highest energy in the following : (1) 3p (2) 3d (3) 4s (4) 3s Ans: 3d
Which one of the following is not isoelectronic with O 2- : (1) N- 3 (2) F - (3) Tl + (4) Na + Ans: Tl +
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