Related tags: chemical analysis, syllabus questions, Mass spectroscopyPAPER 1– SECTION A1. General information on science and its interface with society to test the candidate’s awareness of science, aptitude of scientific and quantitative reasonsing.2. COMMON ELEMENTRY COMPUTER SCIENCE ( Applicable to all candidates offering subject areas ).3. History of development of computers, Mainframe, Mini, Micro’s and Super Computer Systems.4. General awareness of computer Hardware i..e. CPU and other peripheral devices ( input / output and auxiliary storage devices ).5. Basic knowledge of computer systems, software and programming languages i.e. Machine language, Assembly language and higher level language.6. General awareness of popular commercial...
Mechanism of Diels-Alder reaction
Diels-Alder reactionThis reaction was discovered by two German chemists named Otto Diels and Kurt Alder. Conjugated dienes undergo a cycloaddition reaction with multiple bonds to form unsaturated six-membered rings. This reaction involves the 1,4-addition of a diene and a dienophile. This reaction proved to be of great importance as yield was 100% and hence they received the Nobel Prize in 1950.Reaction mechanismThe Diels-Alder reaction is a thermal cycloaddition whose mechanism involves the sigma-overlap...
Photochromic materials
Photochromic materialsPhotochromic molecules can belong to various classes: triarylmethanes, stilbenes, azastilbenes, nitrones, fulgides, spiropyrans, naphthopyrans, spiro-oxazines, quinones.Spiropyrans and SpriooxazinesSpiro-mero photochromism.One of the oldest, and perhaps the most studied, families of photochromes are the spiropyrans. Very closely related to these are the spirooxazines. For example, the spiro form of an oxazine is a colorless leuco dye; the conjugated system of the oxazine and...