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A Level Organic Chemistry Halogenoalkanes

Subject: Chemistry

Level: Easy

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Q1. Which of the following are a nucleophile?

  • 1. :CN-

  • 2. :NH3

  • 3. H+

Q2. Bonds with lower bond enthalpy are _____________ to break.

  • 1. difficult

  • 2. easy

Q3. For elimination to occur, a halogenoalkane has to be heated to high temperatures under ____________ conditions.

  • 1. alcoholic

  • 2. alkaline

  • 3. acidic

Q4. Depletion of Ozone is caused by free radicals formed when chloro-fluoro carbons (CFC) absorb ____________ radiation.

  • 1. gamma

  • 2. UV

  • 3. IR

Q5. Halogenoalkanes contain "polar" bonds because the halogens are more ____________________ than Carbon.

  • 1. electropositive

  • 2. electronegative

Q6. Depletion of Ozone is an example of _______________ reaction.

  • 1. substitution

  • 2. reduction

  • 3. elimination

Q7. In an elimination reaction, the nucleophile acts as a ________________ .

  • 1. acid

  • 2. base

  • 3. catalyst

Q8. Which of the following can be produced by nucleophilic substitution of Halogenoalkanes?

  • 1. Carboxylic Acids

  • 2. Aldehydes

  • 3. Alcohols

  • 4. Amines

Q9. Bond enthalpy is also known as: (select all applicable)

  • 1. bond dissociation energy

  • 2. latent heat of vaporisation

  • 3. bond energy

Q10. Halogenoalkanes do not undergo nucleophilic substitution. True or False?

  • 1. True

  • 2. False

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