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CBSE Class 9 Notes 2025 : Chemistry (Govt Sr Sec School)

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Lokhandwala Foundation School (LFS), Kandivali East, Mumbai
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12 ORGANIC CHEMISTRY 1. (i) De ine the term 'catenation'. (ii) Which one of the elements Li, Be, B, C, O, F, Ne shows the property of catenation. 2. (i) State the term for:- Compounds having the same general formula and similar chemical properties. (ii) Name: (a) The compound with OH and with COOH as the part of its structure. (b) Homologue of homologus series with general formula CnH2n from the compounds given: Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol. 3. (i) State the structural formula of ethane. (ii) Draw the structural formula of the two isomers of Butane. Give the correct IUPAC name of each. (iii) From the following list, write down the appropriate words to ill in the blanks (a) to (e) below: Addition, carbohydrates, CnH2n-2, CnH2n, CnH2n+2, electrochemical, homologus, hydrocarbons, saturated, substitution, unsaturated. The alkane from an (a) ________ series with the general formula (b) __________. The alkanes are (c) _________ (d) __________ which generally undergo (e) ___________ reaction. 4. (i) For each of the compounds (a) Ethane, (b) Vinegar [acetic acid] and (c) Marsh gas [methane], draw the relevant structural formula. What word is used to describe the above three compounds taken together? (ii) Draw the structural formula of ethane. What is the feature of the ethane structure which allows ethane to react with chlorine in the way it does. (iii) Give the correct IUPAC name and the functional group for each of the compounds whose structural formulae are given below: (a) (b) QUESTION BANK: A CREATION OF QUEST CLASSES EXCLUSIVELY FOR QUEST STUDENTS

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