Core Organic Chemistry Random Retrieval

This quiz contains all the questions in the Core Organic Chemistry section. The website will pick 10 questions at random.

1 / 10

Choose one of the following options:

7‐bromo‐4‐methylhept-2-ene

1‐bromo‐4‐methylhept-2-ene

4‐bromo‐1‐methylhept-2-ene

1‐bromo‐3-propylbut-2-ene

2 / 10

Choose one of the following options:

5‐bromo‐3‐methylpentan‐4‐ol

1-bromomethyl‐2‐methylbutan‐1‐ol

1-bromomethyl‐2‐ethylpropan‐1‐ol

1‐bromo‐3‐methylpentan‐2‐ol

3 / 10

Which of these organic compounds show a broad absorption peak caused by hydrogen bonding affecting a functional group.

(i) propanol

(ii) propanal

(iii) propanoic acid

(iv) propanone

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

4 / 10

This procedure produces a white precipitate which dissolves easily in dilute ammonia solution: heating C₄H₉X for a few minutes with aqueous alkali, then acidifying the mixture with dilute nitric acid and adding silver nitrate. This shows that X is:

F

Cl

Br

I

5 / 10

Which of these alcohols is oxidised to a ketone by a hot acidic solution of potassium dichromate(VI)?

(i) (CH₃)₃COH

(ii) CH₃CH₂CHOHCH₃

(iii) CH₃CH₂CH₂CH₂OH

(iv) CH₃C(CH₃)₂CH₂CHOHCH₃

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

6 / 10

Which of these alcohols are isomers of butan-1-ol?

(i) CH₃CH₂CHOHCH₃

(ii) (CH₃)₃COH

(iii) CH₃CH(CH₃)CH₂OH

(iv) (CH₃)₃CCH₂OH

(i), (ii) and (iii)

(i) and (iii) only

(ii) and (iv) only

(iv) alone

7 / 10

Which reagent can be used to convert butan-1-ol to but-1-ene?

Na₂Cr₂O₇

NaCl

H₂SO₄

AgCl

8 / 10

Why is ethanol a liquid while propane is a gas? (Relative atomic masses: C = 12, H = 1, O = 16)

The molar mass of ethanol is higher than the molar mass of propane

There are more hydrogen atoms in propane than in ethanol

There is hydrogen bonding in ethanol but not in propane

Ethanol is soluble in water while propane is insoluble

9 / 10

Which of these alkenes will produce the largest %yield of 2-bromopentane when it is reacted with hydrogen bromide?

CH₃CH₂CH₂CH=CH₂

CH₂=CHCH₂CH₃

CH₃CH₂CH=CHCH₃

10 / 10

A 5.6 g sample of a pure alkene with one double bond in its molecules, reacts with 16.0 g bromine. What is the formula of the alkene? (Relative atomic masses: C = 12, H = 1, Br = 80)

[1] C₂H₄

[2] C₄H₈

[3] C₆H₁₂

[4] C₈H₁₆

C₂H₄

C₄H₈

C₆H₁₂

C₈H₁₆

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