Chemistry : Important Questions For CBSE Class XII ( Haloalkanes and Haloarenes) (Q.1) Choose the incorrect statement about the benzyl chloride: ( 1 mark ) (a) It is less reactive than alkyl halides. (b) It can be oxidized to benzaldehyde by boiling with copper nitrate solution. (c) It is a lachrymatory liquid and answers beilstein’s test. (d) It gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark
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UN 1076 – Phosgene HAZARDS: Phosgene is a highly toxic‚ irritating and corrosive gas. Inhalation can cause fatal respiratory damage. Phosgene reacts violently and decomposes to toxic compounds on contact with moisture‚ including chlorine‚ carbon monoxide and carbon tetrachloride. In case of skin contact: If liquid phosgene (below 8.2 deg C) contacts the skin or clothing‚ an inhalation exposure should be suspected. Hazards due to skin contact with the gas is unknown. Phosgene does‚ however‚ react
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Accepted 20 August 2009 Available online xxx Keywords: COX-2 Thromboxane synthase Lipoxygenase Homology modelling Docking In an effort to develop potent anti-inflammatory and antithrombotic drugs‚ a series of new 4-(2phenyltetrahydrofuran-3-yl) benzene sulfonamide analogs were designed and docked against homology models of human cyclooxygenase-2 (COX-2)‚ lipoxygenase and thromboxane synthase enzymes built using MODELLER 7v7 software and refined by
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chemical or combustion process (such as lead in petrol)‚ or they may be produced as a result of the process itself. Carbon monoxide if inhaled in excess can cause lung problems‚ loss of oxygen in the blood & finally cause death .In December 1984 deadly methyl isocyanate gas was leaked from a chemical plant in Bhopal‚ causing the deaths of at least 3‚300 people. Water Pollution‚ contamination of water by foreign matter such as micro-organisms‚ chemicals‚ industrial or other wastes‚ or sewage. Such matter
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four pi bonds‚ as eight hydrogen atoms were added. Through heating with hydriodic acid‚ anisene forms the phenol C9H9OH. This indicates that the major constituent of anise oil is an aryl methyl ether‚ with the chemical formula C9H9OCH3. With the formula rewritten‚ it can be seen that anisene has a disubstituted benzene ring with a methoxyl group (-CH3O). This means that the remaining constituent is –C3H5. In this experiment‚ anisene can then react with a methoxybenzoic acid to yield one of three products
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EXPERIMENTAL STUDY TO IMPROVE THE PERFOMANCE OF NEEM OIL BIO DIESEL FUELLED SINGLE CYLINDER DIESEL ENGINE USING LPG INDUCTION SYSTEM Submitted in partial fulfillment for the award of the degree Of BACHELOR OF TECHNOLOGY In AUTOMOBILE ENGINEERING By HARSHAL AGARWAL (11108037) MITHUN GUPTA (11108054) OM PRAKASH KUMAWAT (11108065) Under the guidance of Dr. B NAGALINGAM (Professor‚ Department of Automobile Engineering) FACULTY OF ENGINEERING AND TECHNOLOGY SRM UNIVERSITY (under section 3 of
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The Chemistry of Fragrances From Perfumer to Consumer 2nd Edition RSC Popular Science Titles The RSC publishes series of inexpensive texts suitable for teachers and students which give a clear‚ readable introduction to selected topics in chemistry. They should also appeal to the general chemist. For further information on all available titles contact: Sales and Customer Care Department‚ Royal Society of Chemistry‚ Thomas Graham House‚ Science Park‚ Milton Road‚ Cambridge CB4 0WF‚ UK
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stretching vibration of benzene···X (X=He‚Ne‚Ar‚Kr‚Xe) van der Waals molecules P. Hobza and Ota Bludsky J. Heyrovsky Institute of Physical Chemistry and Electrochemistry‚ Czechoslovak Academy of Sciences‚ 18223 Praha‚ Czechoslovakia H. L. Selzle and E. W. Schlag Institute of Physical and Theoretical Chemistry‚ Technical University of Munich‚ 8046 Garching‚ Federal Republic of Germany (Received 26 December 1991; accepted 17 March 1992) The C6v structure of benzene’ "X (X = He‚ Ne‚ Ar‚ Kr
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15. Benzene and Aromaticity • C-Phen DM Drops (Chlorpheniramine/Dextromethorp/Phenylephrine) • This combination medication is used to treat symptoms caused by the common cold‚ flu‚ allergies‚ hay fever‚ or other breathing illnesses (e.g.‚ sinusitis‚bronchitis). • One of the active ingredients is Phenylephrine –a decongestant that helps relieve stuffy nose symptoms. H HO OH H N CH3 . HCl What is the configuration at this chirality center? R or S ? www.primaryrx.com/pdf/C-PHEN%20DM%20DROPS
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compounds possess the benzene ring functional group: G’s FG = aromatic compound or arene benzene ring or aryl grp - other compounds which do not contain a benzene ring are also referred to as “aromatic” based on their similarity in physical & chemical behavior to benzene STRUCTURE OF BENZENE – - there are several characteristics of benzene which‚ although initially seemed contradictory‚ helped finally to determine its enigmatic structure a) Unsaturated Molecular Formula – - benzene ‘s molecular formula
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