ORGANIC CHEMISTRY: CLASS XI A TEST

JAWAHAR NAVODAYA VIDYALAYA AMARKANTAK ANUPPUR M.P.UNIT TEST NO. 04CLASS XICHEMISTRY THEORYM.M. 50TIME 1 ½ HRSINSTRUCTIONS:Question No. 01 – 10 carries 2 marks, Q. No. 11-15 carries 3 marks, Q. No. 16-18 carries 5 marks.All questions are compulsory.Internal choice is provided for question 16-18.Which of the following represents the correct IUPAC name for the compounds concerned? (a) 2,2-Dimethylpentane or 2-Dimethylpentane(b) 2,4,7-Trimethyloctane or 2,5,7-TrimethyloctaneGive condensed and bond line structural formulas and identify the functional group(s) present, if any, for :(a) 2,2,4-Trimethylpentane (b) 2-Hydroxy-1,2,3-propanetricarboxylic acidWhich of the two: O2NCH2CH2O– or CH3CH2O– is expected to be more stable and why?Explain the process presented in the diagram and its effect on stabilityHow do you account for the formation of ethane during chlorination of methane?An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one. Write structure and IUPAC name of ‘A’.Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?Why is benzene extra ordinarily stable though it contains three double bonds?What are the necessary conditions for any system to be aromatic?Explain why the following systems are not aromatic? Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.(a) C6H5OH (b) C6H5NO2 (c) CH3CH = CH – CHOHow will you convert benzene into(i) p-nitrobromobenzene (ii) m-nitrochlorobenzene (iii) p -nitrotoluene Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.What are electrophiles and nucleophiles? Explain with examples.Identify the reagents shown in bold in the following equations as nucleophiles or electrophiles:Explain the following with reference to alkane:(2+2+1 or 2+1+2)Confirmation of EthaneChlorination of methaneWurtz reactionOr//Kolbes electrolysis for preparation of EthaneCracking of AlkanePreparation of Alkyl aryl and aryl aryl compoundExplain the following with reference to alkene(2+2+1 or 2+1+2)Ozonolysis of alkeneAddition of HBr in absence of peroxideAllylic substitution reactionOr//Addition of HBr in presence of peroxideOzonolysis of PropeneDehydration of ethyl alcohol (with mechanism)Explain the following terms:Saytzeff rulec.Inductive Effecte.TautomerismMetamerismd.Chain isomerismOr//Fridel Craft Aclation of benzeneElectrophilic substitution reaction in benzeneNitration of BenzeneDistinguish b/w But 1 yne and But 2 yneSN1 and SN2