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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FE 315 INSTRUMENTAL ANALYSIS High Performance Liquid Chromatography (HPLC) Instructor: Dr. Hüseyin BOZKURT High Performance Liquid Chromatography (HPLC) is one mode of chromatography‚ the most widely used analytical technique. Chromatographic processes can be defined as separation techniques involving mass-transfer between stationary and mobile phases. Present day liquid chromatography that generally utilizes very small packing particles and a relatively high pressure is referred to as high
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3-2-3-1-Conventional Culture Method (Marks 1972): The infected lesions of the tuberculin positive reactors were collected and placed in to a sterile mortar containing sterile sand. The fat was removed and the suspected parts were cut into minute pieces. Then 2 ml of distilled water added to the mixture‚ homogenized and crushed well until the suspension was obtained. Then 2 ml of H2So4 acid 4% added to the mixture then incubated the mixture at 37 0C for 1/2 h. The mixture was diluted with
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suspension of the powdered ore is made with water. To it‚ collectors and froth stabilizers are added. Collectors (e. g.‚ pine oils‚ fatty acids‚ xanthates‚ etc.) enhance non-wettability of the mineral particles and froth stabilizers (e. g.‚ cresols‚ aniline) stabilize the froth. The mineral particles become wet by oils while the gangue particles by water. A rotating paddle agitates the mixture and draws air in it. As a result‚ froth is formed which carries the mineral particles. The froth is light and
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| | Mineral oil | Damage to liver‚carcinogenic effects | | Karanja oil | Heart problems‚ liver damage | | Castor oil | Stomach problem | Asafoetida | Foreign resins galbanum‚ colophony resin | dysentery | Turmeric powder | Yellow aniline dyes | Carcinogenic | | Non-permitted colourants like metanil yellow | Highly Carcinogenic | | Tapioca starch | Stomach disorder | Chilli powder | Brick powder‚ saw dust | Stomach problems | | Artificial Colours | Cancer | Sweets‚
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Williamson Ether Synthesis R + O an alkoxide C X R SN2 an alkyl halide methyl & 1o best; X = Cl‚ Br‚ I‚ OTos O C ether product Example: O Na + Sodium phenoxide CH3 Br O CH3 Phenyl methyl ether (anisole) + Na Br + X SP
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Benzene is a special case of conjugation that leads to an especially stable bonding arrangement. The benzene ring consists of six sp2 hybridized carbon atoms in a regular hexagon. Each carbon forms two σ-bonds with adjacent carbons‚ and a third σ-bond with a hydrogen atom. The 2p orbital on each atom is available for π-bonding. Interaction between the p orbitals on the six carbon atoms forms a conjugated system of π-electrons. Molecules with this bonding arrangement are called aromatic molecules
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Chapter 1 MULTIPLE CHOICE QUESTIONS Topic: Atomic Orbitals 1. A) B) C) D) E) In quantum mechanics a node (nodal surface or plane) is: a place where Ψ is negative. a place where Ψ is positive. a place where Ψ = 0. a place where Ψ2 is large. a place where Ψ2 is negative. Ans: C Topic: Atomic Orbitals‚ Molecular Orbitals 2. When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule‚ how many molecular orbitals are formed? A) 1 B) 2 C) 3 D) 4 E) 5 Ans:
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BASIC MICROBIOLOGY SMS ASSIGNMENT 1 (LACTOPHENOL BLUE STAINING) NAME : 1) FARAH ANINI BINTI MD. SHAFI’I 2) FATIN NUR SYAHIRAH BINTI MOHD. HANAFI 3) NOR AZAH BINTI MAHIZAN 4) JOSHUA RAJ A/L ISIDORE SAKAYARAJ 5) CHAN POH SHIN MATRIX NO : 1) 012012051710 2) 012012051610 3) 012012051646 4) 012012051472 5) 012012111185 SEMESTER : 2 PROGRAMME : BACHELOR OF NUTRITION (BNT) LECTURER : MADAM SASIMALANI SARGUNNAM
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Background BASF is the largest diversified chemical company in the world and is headquartered in Ludwigshafen‚ Germany. BASF originally stood for BadischeAnilin- und Soda-Fabrik (English: Baden Aniline and Soda Factory).BASF was founded on 6 April 1865 in Mannheim‚ in the German-speaking country of Baden by Friedrich Engelhorn. Currently there are 109‚140 people worldwide working in BASF. The BASF Group comprises subsidiaries and joint ventures in more than 80 countries and operates six integrated
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