Tetra-ethyl lead

From introduction Lead and zinc are heavy metals which are most commonly found at the same work place. Both these metals have unique physical and chemical properties that make them suitable for great variety of applications. Because of high persistence of lead and its use since ancient times for industrial purposes, Lead has become common environmental and occupational contaminant widely distributed throughout the world. Even though the toxic effects of lead and its compounds have been investigated

Despite being the most prevalent eating disorder amongst individuals with developmental disabilities and may occur in as many as 25%-33% of children, there is much that is still unknown about pica. There has been little advancement in finding out what causes this disorder and because of that, treating and even diagnosing pica can be difficult. In addition to that, pica can have health consequences that range from mild to severe so, when coupled with the difficulty in treatment and lack of breakthrough

block by block, column to column, row to row on a periodic table that he kept tucked away in his wallet, Midgley discovered that if he added tetraethyllead to gasoline the knock dissipated. His invention took the world by storm and GM created The Ethyl Corporation in 1921 and named Thomas Midgley the vice president. The next year at the Indianapolis Five Hundred the top three finishing cars ran on leaded gasoline. General Motors began mass producing tetraethyllead. The first plant was built in Deepwater

commonly known by its old name ethyl chloride, is a chemical compound with chemical formula C2H5Cl, once widely used in producing tetraethyllead, a gasoline additive. It is a colorless, flammable gas or refrigerated liquid with a faintly sweet odor. Ethyl chloride is a chemical compound with chemical formula C2H5Cl, once widely used in producing tetra-ethyl lead, a gasoline additive. It is a colourless, flammable gas or refrigerated liquid with a faintly sweet odour. Ethyl chloride is produced by the

Introduction Lead, a naturally occurring metal and can be used in almost everything. It can cause serious health issues if it is exposed for a long time, particularly in children as they are more susceptible to absorbing and retaining lead in their bodies. Each year, in the United States 310,000 of 1- to 5-year age group are found to have unsafe levels of lead in their blood, which can cause a wide range of symptoms. (1) In the united states, Lead poisoning seems to be one of the most common

Over the past few decades, herbal drugs have become more popular among the people in the world. A regular and widespread use of herbs throughout the world has increased serious concerns over their quality, safety and efficacy. Further about 80% of world population depends on herbal preparations for primary healthcare needs. In many developed countries, 70 to 80 per cent of the populations have used some form of complementary or alternative medicines composed primarily of herbal medicines (Firenzuoli

main pollutants contributed by automobiles, electric power generating stations, industrial and domestic fuel consumption, refuse burning, industrial processing etc. are carbon monoxide (CO), unburned hydrocarbon (UBHC), oxides of nitrogen (NOx) and Lead. An aqua silencer is an attempt mainly dealing with control of emission and noise. The noise and smoke level is considerably less than the conventional silencer, it is cheaper, no need of catalytic converter and easy to install. Table of Contents

Synthesis, Recrystallization of β-D-Glucose Pentaacetate from its Original D-Glucose and it comparison with literature though Melting point, TLC, IR, 1H and 13C NMR Abstract: The synthesis of the product: β-D-glucose pentaacetate is done though the acetylation using acetic anhydride with D-glucose with the help of sodium acetate. The recrystallization of the product is done though a polar solvent like water. The Result of this experiment has a percentage yield of 61% and analytical methods

General Awareness   (Exam Held on 16-5-2010)  1. India attained ‘Dominion Status’ on— (A) 15th January, 1947 (B) 15th August, 1947 (C) 15th August, 1950 (D) 15th October, 1947 Ans : (B) 2. Despotism is possible in a— (A) One party state (B) Two party state (C) Multi party state (D) Two and multi party state Ans : (A) 3. Marx belonged to— (A) Germany (B) Holland (C) France (D) Britain Ans : (A) 4. Which one of the following is the guardian of Fundamental Rights ? (A) Legislature (B) Executive