Haloalkanes and haloarenes are the compounds emanated from the hydrocarbons by the substitution of a hydrogen atom with a halogen. The primary difference between haloalkanes and haloarenes is that if a hydrogen atom is substituted by a halogen atom in an aliphatic hydrocarbon, it is known as haloalkanes. In contrast, if a hydrogen atom is substituted by a halogen atom in an aromatic hydrocarbon, it is known as haloarenes.
Download Class 12 Chemistry Worksheet on Chapter 10 Haloalkanes and Haloarenes Set 4 PDF
CBSE Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Worksheet – Set 4
Q1. A silver salt of fatty acid on heating with an alkyl halide gives
(a) Ether
(b) Ester
(c ) Alcohol
(d) None of the above
Q2. Chlorination of CS2 gives
(a) CCl4
(b) CS2Cl2
(c ) CH4
(d) None of the above
Q3. Sodium ethoride reacts with ethyl iodide to yield
(a) CH3CH3
(b) C2H5OCH3
(c ) C2H5OC2H5
(d) None of the above
Q4. Propyl iodide and isopropyl iodide are
(a) Position isomers
(b) Functional isomers
(c ) Chain isomers
(d) None of the above
Q5. A magnesium alkyl halide is known as
(a) Grignard reagent
(b) Fenton reagent
(c ) Twichell reagent
(d) None of the above
Q6. What is a Lucas reagent?
Q7. What is Finkelstein’s reaction?
Q8. Why is the C-Cl bond length of chloro benzene shorter than that of methyl chloride?
Q9. Why is the dipole moment of chlorobenzene lower than that of cyclohexyl chloride?
Q10. Why are SN1 reactions accompanied by racemisation in optically active alkyl halides?
Q11. Which one of the following among (CH3)3 C−Br and (CH3)3C−I will be more reactive towards SN1? Give reason.
Q12. What will happen if p-nitro chlorobenzene is heated with aqueous NaOH at 443 K followed by acidification?
Q13. Why dextro and levorotatory isomers of Butan−2−ol are challenging to isolate by fractional distillation?
Q14. Among the given compounds, 2−Bromo pentane, 2−Bromo−2−methyl butane, and 1−Bromo pentane.
(a) Which of the following is most reactive towards an SN2 reaction?
(b) Which of the following is optically active?
(c ) Which of the following is most reactive towards β−elimination reaction?
Q15. Among CH3CH(Cl)CH2CH3 and CH3CH2CH2Cl, Which one of the following compounds will be more reactive towards the SN2 reaction? Give reason.
Q16. What is chirality? Explain with an example.
Q17. Differentiate between SN1 and SN2 reactions.
Q18. What is the maximum number of isomers possible in the monochlorination of methyl cyclobutane?
Q19. Convert chlorobenzene to biphenyl.
Q20. Convert 2-bromobutane to but-2-ene.
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