r chemistry

1. Inductive effect Permanent effect and transmitted over a short distance. +1 effect Displacement of sigma bond pair of electrons away from the substituent. Group which exerts +1 effect is sigma electron releasing group. Decreasing order of +1 effect is - O > - COO > -CR3 > CHR2 &..

;Freundlich's adsorption isotherm is (1) = kF 1/n) m (2) = F 1/n) m X r.2 (3) a P m (4) all are correct for different ranges of pressure 5. Which of the following is not a characteristic of adsorption? (1) highly selective and depends on the nature of adsorbate and adsorbent (2) heat may ..

; paramagnetism due to unpaired electrons; increases with increase in unpaired electrons 6. Catalytic property Transition metals have active centers and large surface area; hence used as catalysts. Ex. Fe-synthesis of NH3; V2Os manufacture of H2S04; Ni- hydrogenation of oils 7. Complex formation Av..

(40periods of 45 minutes duration) Objectives 1. To strengthen the concepts assimilated at the secondary level and develop new concept to provide a sound background for higher studies in chemistry. 2. To equip students to pursue science based professional courses like medicine, en..

. Nitrogen, halogen and sulphur of organic compound are converted into corresponding sodium salts during combustion. [C + N] + Na-^^N a CN-gf^L Na4 [Fe(CN) 6 ] > Fe 4 [Fe (CN) 6 ] 3 organic compound blue colour fiise (i) dil. HNO, . Y I [X] + Na ^ NaX -^ 3 AgX f + jvjaNOj organic compound sodium..

Substances such as sugaiv'starch, alcohol' r had been known to even early man but almost no progress in, their chemistry was made until the beginning of the eighteenth century. Lemery (1675) divided the natural chemical compounds into three classes based on their sources ..

guiding Questions What is science? How is science different from non-science disciplines? What is ^ chemistry? What does it do? What are laws of nature? What is an experiment? Why r is it important to conduct experiments in science? What is a hypothesis? How is it ..

CHEMISTRY (New Syllabus) Time : 3 Hours 15 minutes Max. Marks : 90 English Version Instructions : i) The question paper has four pa..

CHEMISTRY (English Version) Time : 3 Hours 15 minutes Max. Marks : 90 Instructions : i) The question paper has four parts. ii) Parts A,B, C and D are common to all..

. 2RCH2CHO CH3CH2ONa RCH2COOCH2 CH2R (c) Oxidation of ketones Ketones are oxidised by strong oxidising agents like acidified permanganate or dichromate solution or concentrated HNO3 RCH2COR + 3 [O]-RCOOH + RCOOH During oxidation of mixed ketones, carbonyl group is retained by smaller alky..