dear sir,
i am a rishi jadhav studying in 12 th standard . I want the chemistry project . i wnt submit this tommorrow in my collage . plz give me the project .
Industrial companies are constantly in search of methods of analysis that shorten their laboratory work and give a more efficient control of the plant. Typical of these methods are those now used by the iron and steel chemist to determine carbon and phosphorus, by the sugar chemist to determine the sugar content of sardines, etc., and by the cereal chemist to find the percentage of Moisture in wheat and flour. The vegetable oil industry needed a simple and precise test, adapted to the analysis of a great variety of petroleum products. It is desirable that the purchaser of oil bearing materials know in a short time the oil content of their raw materials and that the operation of the plant is maintained more efficiently through frequent verification tests carried out while the plant is in operation.
Vegetable oil chemists have made many attempts to simplify the ether extraction method to make accurate oil determinations and to develop some rapid method that would give sufficiently accurate results for routine use in crude and finished product trials. As a practical matter, few of these quick proposed methods of analyzing the fat or oil content of the seeds have proven to be worth it. The time element has not been sufficiently reduced, or the expense of doing the test is too large, or the accuracy (compared to standard methods of analysis) is not enough, or the method is not simple enough for the average person to bring about .
In the early 1920s, Wesson ^ proposed an optical method by which the oil content of cottonseed flour and cottonseed meats could be measured by observing the change in the refractive index of the fat or oil solvent as Diluted with the cottonseed oil extracted from the sample under the conditions for its test.