ONE SHOT - Exercise 9.1 to 9.25 | Hydrocarbons | ncert chemistry line by line tamil | RSK NEET Tamil

NCERT Exercise 9.1 to 9.25 | Hydrocarbons | ncert chemistry line by line tamil | RSK NEET Tamil

Exercise 9.1: How do you account for the formation of ethane during chlorination of methane ?

Exercise 9.2:Write IUPAC names of the following compounds

Exercise 9.3: For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated

Exercise 9.4: Write IUPAC names of the products obtained by the ozonolysis of the following compounds

Exercise 9.5:An alkene ‘A’ on ozonolysis gives a mixture of ethanal and pentan-3-one.Write structure and IUPAC name of ‘A’

Exercise 9.6: 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’

Exercise 9.7: Propanal and pentan-3-one are the ozonolysis products of an alkene? What is the structural formula of the alkene?

Exercise 9.8: Write chemical equations for combustion reaction of the following hydrocarbons:
(i) Butane (ii) Pentene
(iii) Hexyne (iv) Toluene

Exercise 9.9: Draw the cis and trans structures of hex-2-ene. Which isomer will have higher b.p. and why?

Exercise 9.11:What are the necessary conditions for any system to be aromatic?

Exercise 9.12:Explain why the following systems are not aromatic?

Exercise 9.13:How will you convert benzene into
(i) p-nitrobromobenzene (ii) m- nitrochlorobenzene
(iii) p - nitrotoluene (iv) acetophenone?

Exercise 9.14: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.

Exercise 9.15:What effect does branching of an alkane chain has on its boiling point?

Exercise 9.16: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.

Exercise 9.17:Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene).How does the result support Kekulé structure for benzene?

Exercise 9.18:Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour

Exercise 9.19:Why does benzene undergo electrophilic substitution reactions easily and nucleophilic substitutions with difficulty?

Exercise 9.20:How would you convert the following compounds into benzene?
(i) Ethyne (ii) Ethene (iii) Hexane

Exercise 9.21:Write structures of all the alkenes which on hydrogenation give 2-methylbutane.

Exercise 9.22: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.

Exercise 9.23:Out of benzene, m–dinitrobenzene and toluene which will undergo nitration most easily and why?

Exercise 9.24:Suggest the name of a Lewis acid other than anhydrous aluminium chloride which can be used during ethylation of benzene.

Exercise 9.25:Why is Wurtz reaction not preferred for the preparation of alkanes containing odd number of carbon atoms? Illustrate your answer by taking one example.

NCERT Exercise 9.1 to 9.25 | Hydrocarbons | ncert chemistry line by line tamil | RSK NEET Tamil

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