Q.1 Bond enthalpy of fluorine is lower than that of chlorine‚ why? Q.2 Give the IUPAC name of the following compound: (CH3)3-C-C-COOH ║ O Q.3 On increasing temperature‚ activation energy of a reaction decreases‚ why? Q 4 Which of the following is most effective electrolyte in the coagulative of AgI/Ag+sol? K2SO4‚ MgCl2‚ K4[Fe(CN)6] Q.5 Write the reaction when glucose is heated with excess of HI. Q.6 Which Xe compound has distorted octahedral shape? Q.7 What is the denticity of
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mice were captured in traps‚ 14 from the African slopes and 16 from the European slopes. All mice were adults and fed cucumbers and carrots. Hair samples were taken from the rear of the mice by scissors. Hair samples were oxidized by permanganate to pyrrole-2‚3‚5-tricarboxylic acid and analyzed by HPLC with ultraviolet detection to determine eumelanin content. To determine pheomelanin content‚ identical samples were hydrolyzed with hydriodic acid to 4-amino-3-hydroxyphenylalanine‚ and analyzed by HPLC
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designate the folds in the chain and the spaces between each fold (interhelical regions) are named using the combined letters of the folds between it (example: space between folds A and B is termed as AB). The heme group is square planar and has 4 pyrrole rings attached to Fe (II) at the center by four α- methylene bridges. It is attached to the polypeptide chain thru the proximal Histidine and the distal Histidine. The proximal histidine or His F8 is attached directly to Fe (II) while the distal Histidine
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Use of SDS-PAGE/Western Blot Techniques as Diagnostic Tools for Equine Medical Conditions SDS-PAGE Overview Electrophoresis is commonly used to separate proteins using an applied electrical field. SDS-PAGE separates proteins by molecular weight‚ using sodium dodecyl sulfate (SDS; also known as lauryl sulfate) to denature them and a discontinuous polyacrylamide gel as a sieving matrix. The net charges of folded proteins are not dependent upon molecular weight. Rather‚ charge is determined by
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described in the literatures [13‚ 14]. The 2-naphthol (4.33 g‚ 0.03 mol) was dissolved in 30ml of ethanol and it was mixed with N-methylpiperizine (3.0 mL‚ 0.03 mol) by continuous stirrer at room temperature until a clear solution was obtained. The benzaldehyde (3.0 mL‚ 0.03 mol) was added slowly to this mixture with constant stirring. After 48 hours of continuous stirring‚ a white color precipitate was formed and it was washed with distilled water several times and dried in the air oven at 60 °C. The
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practical polyethylene synthesis was discovered (again by accident) in 1933 by Eric Fawcett and Reginald Gibson at the ICI works in Northwich‚ England.[6] Upon applying extremely high pressure (several hundred atmospheres) to a mixture of ethylene and benzaldehyde they again produced a white‚ waxy‚ material. Because the reaction had been initiated by trace oxygen contamination in their apparatus the experiment was‚ at first‚ difficult to reproduce. It was not until 1935 that another ICI chemist‚ Michael
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Photosynthesis Matt Lazar 5/13/96 8th Hr. When you and me eat‚ we find our food. When plants eat‚ they make their own food and energy. They make their food and energy through a process called photosynthesis. Through photosynthesis oxygen is also produced. Photosynthesis is "a process in which green plants synthesize carbohydrates from carbon dioxide and water....The reverse of this reaction provides energy for plants‚ for animals that eat plants‚ for animals that eat animals that eat plants"
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BACHELOR OF SCIENCE (HONS) BIOTECHNOLOGY YEAR 1 SEMESTER 1‚ 2 & 3 UDBB 1164 FUNDAMENTAL ORGANIC CHEMISTRY 0 EXPERIMENT 1 PROPERTIES OF HYDROCARBONS Introduction Hydrocarbons are compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes (e.g. methane‚ ethane and propane) have only single bonds‚ and are said to be saturated; alkenes (e.g. ethene and propene)
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LiquidAppearance: colorlessBoiling Point: 205.30CMelting Point: -15.20CDensity: 1.04 g/cm3 | Hazardous in case of skin contact (irritant)‚ of eye contact (irritant)‚ of inhalation. Slightly hazardous in case of skin contact (permeator)‚ of ingestion. | benzaldehyde | | Physical State: LiquidAppearance: NABoiling Point: 1790CMelting Point: -260CDensity: 1.04 g/cm3 | Very hazardous in case of ingestion. Hazardous in case of skin contact (irritant)‚ of eye contact (irritant)‚ of inhalation. Slightly hazardous
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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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