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Simple crystallisation - Purification of organic compounds This is the most general technique used to purify organic solids. It is associated with the concept that whenever
Explain about Phosphprous and its allotrpes White phosphorus - crystalline solid P 4 Red phosphorus - polymeric solid Scarlet phosphorus Violet phosphorus
Criteria of purity of organic compounds The purity of an organic compound can be determined by ascertaining its some physical constants such as m.p., b.p., defined gravity, re
Isoelectronic species are: (1) K + Cl - (2) Na + Cl - (3) Na Ar (4) Na + Ar Ans: K + Cl -
Explain significance of orthogonality rule
Q. Evaluate the gold number of A? The coagulation of 100 mL of colloidal sol. is completely prevented by adding 0.25g of a protective colloid 'A' to it before adding 1 mL of Na
Predicting the feasibility of reaction and does not show the rate of chemical reaction
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 it
Q. Name the three ways in which consumer testing can be done? The three ways by which consumer testing can be done are: inhouse laboratory testing, home testing and institution
Whereas a pure molecular species has a definite stoichiometry, this is not often true for solids. Defects in crystals will include vacancies (atoms missing from their expected site
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