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Chemistry Worksheets Class 12 on Chapter 10 Haloalkanes and Haloarenes with Answers - Set 3

Haloalkanes and haloarenes are compounds derived from hydrocarbons. If we replace one or more hydrocarbon hydrogen with a halide, it is termed a halogen derivative. When a hydrogen atom is substituted from an aliphatic hydrocarbon, it is referred to as haloalkane. In contrast, if a hydrogen atom is substituted from an aromatic hydrocarbon, it is referred to as haloarene.

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Chemistry Worksheets Class 12 on Chapter 10 Haloalkanes and Haloarenes with Answers - Set 3
Chemistry Worksheets Class 12 on Chapter 10 Haloalkanes and Haloarenes with Answers - Set 3

CBSE Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes Worksheet – Set 3

Q1. n-propyl bromide reacts with ethanolic KOH to form

(a) Propane

(b) Propene

(c ) Propyl alcohol

(d) None of the above

Q2. The formation of alkane by the action of zinc on alkyl halide is known as

(a) Wurtz reaction

(b) Kolbe’s reaction

(c ) Frankland’s reaction

(d) None of the above

Q3. Chloroform, when treated with benzene in the presence of anhydrous AlCl3, the product formed is

(a) Chloro benzene

(b) A mixture of ortho and para chloro toluene

(c ) Tri phenyl methane

(d) None of the above

Q4. Phosgene is a common name for

(a) Carbon dioxide and phosphane

(b) Phosphoryl chloride

(c ) Carbonyl chloride

(d) None of the above

Q5. The reactivity of alkyl halides depends upon

(a) The nature of the alkyl group only

(b) The nature of the halogen atom only

(c ) The nature of the alkyl group and halogen atoms

(d) None of the above

Q6. Write the IUPAC names of the following compound.

Q7. How will you convert benzene to 3-bromo nitro benzene?

Q8. What will happen when bromine attacks CH2 = CH – CH2 – C ≡ CH?

Q9. How will you distinguish between C2H5Br and C6H5Br? Also, write the chemical equation involved.

Q10. How will you distinguish between carbon tetrachloride and chloroform? Also, write the chemical equation involved.

Q11. Justify the optical activity of 2 – Chloro butane.

Q12. What is an ambident nucleophile? Explain with an example.

Q13. What is beta elimination?

Q14. What happens when chlorobenzene is treated with Cl2 / FeCl3?

Q15. Why is Grignard reagent prepared under anhydrous conditions?

Q16. What happens when n-butyl chloride is treated with alcoholic KOH?

Q17. What happens when methyl bromide is treated with sodium in the presence of dry ether?

Q18. How would you differentiate between SN1 and SN2 mechanisms of substitution reactions?

Q19. How will you convert propene to 1-iodopropane?

Q20. How will you differentiate between an alkyl halide and an aryl halide?

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