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Q. What is trial and error method?
Trial and error method is the simplest methodology in product development. Only one ingredient in the formulation is changed at a time and its effect on the quality of the final product is tested.
what is the function of the charcoal in the purification of the 4-nitroanine 2.why is it not possible to obtain 2-and 4-nitroaniline by direct nitration of aniline (phenylamine)
The maximum energy is present in any electron at: (1) Nucleus (2) Ground state (3) First excited state (4) Infinite distance from the nucleus Ans: Infinite dis
The energy of the electron in the first orbit of He + is -871.6x 10 -20 J . The energy of the electron in the first orbit of hydrogen would be : (1) -871.6 x10 -20 J
(a) How is aniline obtained from benzene? (b) Why are the secondary amines more basic than primary amines? Describe. (c) Write the complete chemical reactions for the convers
need help answering questions for the lab
biography on Cecil E Boord
Sedimentation: The process of allowing w ater to stand undisturbed in big tanks for some time in order to facilitate the settling down of the course suspended particles due to th
how to prepare a dicarboxylic ?
Ask question the density of 2 molal aqueous solution of NaOH is 1.1.gram/litre. Calculate the molality of solution?
Separation of alkane, alkene and alkyne The gaseous mixture is passed via ammonical cuprous chloride solution. The alkyne (acetylene) reacts along with and makes a red preci
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