HYDROCARBONS - NCERT Exercises in 1 Shot - All Concepts, Tricks & PYQs Covered | NEET JEE IIT

➡️Free NEET notes: https://www.amazon.com//dp/B091Z7YPZJ... ➡️Free JEE Solutions: https://www.amazon.com//dp/B088RGRT45... ➡️Free PDF Hydrocarbons https://drive.google.com/file/d/13H-f... Timestamps: 00:10 → 13.1 How do you account for the formation of ethane during chlorination of methane ? 00:54 → 13.2 Write IUPAC names of the following compounds : 01:56 → 13.3 For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated : (a) C4H8 (one double bond) (b) C5H8 (one triple bond) 02:46 → 13.4 Write IUPAC names of the products obtained by the ozonolysis of the following compounds : (i) Pent-2-ene (ii) 3,4-Dimethylhept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene 04:02 → 13.5 An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3- one. Write structure and IUPAC name of ‘A’. 04:20 → 13.6 An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’. 04:43 → 13.7 Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene? 05:11 → 13.8 Write chemical equations for combustion reaction of the following hydrocarbons: (i) Butane (ii) Pentene (iii) Hexyne (iv) Toluene 07:15 → 13.9 Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why? 07:40 → 13.10 Why is benzene extra ordinarily stable though it contains three double bonds? 07:50 → 13.11 What are the necessary conditions for any system to be aromatic? 08:06 → 13.12 Explain why the following systems are not aromatic? 09:23 → 13.13 How will you convert benzene into (i) p-nitrobromobenzene (ii) m- nitrochlorobenzene (iii) p - nitrotoluene (iv) acetophenone? 11:00 → 13.14 In the alkane H3C– CH2 – C(CH3) 2 – CH2 – CH(CH3) 2, identify 1°,2°,3° carbon atoms and give the number of H atoms bonded to each one of these. 11:05 → 13.15 What effect does branching of an alkane chain has on its boiling point? 12:00 → 13.16 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. 12:25 → 13.17 Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene). How does the result support Kekulé structure for benzene? 13:26 → 13.18 Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour. 13:49 → 13.19 Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty? 14:03 → 13.20 How would you convert the following compounds into benzene? (i) Ethyne (ii) Ethene (iii) Hexane 15:03 → 13.21 Write structures of all the alkenes which on hydrogenation give 2-methylbutane. 15:19 → 13.22 Arrange the following set of compounds in order of their decreasing relative reactivity with an electrophile, E+ (a) Chlorobenzene, 2,4-dinitrochlorobenzene, p-nitrochlorobenzene (b) Toluene, p-H3C – C6H4 – NO2, p-O2N – C6H4 – NO2. 16:34 → 13.23 Out of benzene, m–dinitrobenzene and toluene which will undergo nitration most easily and why? 17:02 → 13.24 Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene. 17:19 → 13.25 Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.