Lesson 3.3.3.2
3.3.3.2 Halogenoalkanes: Elimination Quiz: AQA Chemistry, Unit 3
20 questions
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Lesson 3.3.3.2, Halogenoalkanes: Elimination: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
What type of reaction occurs when 2-bromopropane is heated with ethanolic potassium hydroxide?
- Elimination
- Addition
- Oxidation only
- Free-radical substitution
-
What is the organic product of elimination from 2-bromopropane?
- Propan-1-ol
- Propane
- Propan-2-ol
- Propene
-
What role does the hydroxide ion play in an elimination reaction with a halogenoalkane?
- Base
- Electrophile
- Nucleophile
- Free radical
-
What role does the hydroxide ion play in nucleophilic substitution of 2-bromopropane?
- Base
- Catalyst
- Nucleophile
- Electrophile
-
Which reaction conditions favour elimination rather than substitution for 2-bromopropane?
- Hot ethanolic KOH
- Warm aqueous KOH
- Cold aqueous AgNO3
- Room temperature water
-
Which product is formed by substitution of 2-bromopropane with aqueous KOH?
- Propene
- Propan-1-ol
- Propan-2-ol
- 2-bromopropanol
-
Which functional group feature allows halogenoalkanes to undergo elimination reactions?
- Adjacent C-H bonds
- Adjacent double bonds
- Aromatic ring presence
- Terminal carboxylic group
-
In the elimination of HBr from 2-bromopropane, which bond is formed?
- A C-Br double bond
- A C-OH single bond
- A C=C double bond
- A C-K ionic bond
-
What two roles can hydroxide ions perform in reactions with halogenoalkanes?
- Nucleophile and base
- Electrophile and base
- Nucleophile and acid
- Electrophile and oxidant
-
What organic product forms when 2-bromopropane reacts with hot ethanolic potassium hydroxide?
- Propane
- Propan-2-ol
- Propanal
- Propene
-
Which of these is the product of elimination of 2-bromobutane?
- Butane
- But-2-ene
- But-1-ene only
- Butan-2-ol
-
Which product is formed from 1-bromopropane with ethanolic KOH by elimination?
- Propan-2-ol
- Propene
- Propan-1-ol
- Propanal
-
What is the molecular formula of the elimination product of 2-bromopropane?
- C3H5Br
- C3H8
- C3H6
- C3H7OH
-
What organic product family is formed alongside alkenes during competing substitution-elimination reactions?
- Aldehydes
- Ethers
- Alcohols
- Carboxylic acids
-
Which solvent condition favours nucleophilic substitution over elimination in halogenoalkane reactions?
- Ethanolic
- Non-polar organic
- Aqueous
- Gaseous
-
What role does potassium hydroxide play in the elimination of 2-bromopropane?
- Acting as an electrophile
- Acting as a base
- Acting as an acid
- Acting as a catalyst
-
A student heats 2-bromopropane with ethanolic KOH. Which product is most likely to be the main organic product?
- 2-bromopropanol
- Propene
- Propanone
- Propan-2-ol
-
Why does 2-bromopropane produce a mixture of products with aqueous potassium hydroxide?
- Concurrent substitution-elimination
- Incomplete oxidation reaction
- Free radical initiation
- Electrophilic addition competition
-
Which type of halogenoalkane is most likely to undergo elimination rather than substitution with a base?
- Methyl
- Secondary
- Primary
- Tertiary
-
Which solvent favours an elimination reaction when 2-bromopropane reacts with potassium hydroxide?
- Hexane
- Ethanol
- Dilute acid
- Water
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