Organic Chemistry

Organic Chemistry

1. When an organic compound W reacts with hydrogen in the presence of a nickel catalyst, propane is formed. What could W be?

A propanol
B ethane
C propene
D ethanol

2. When an organic compound X is exposed to air, butanoic acid is formed.

What could X be?

A butane
B ethyl ethanoate
C 1-butene
D butanol

3. If the substance CH2 = CHCH = CHCH = CH2 was reacted with excess hydrogen in the presence of a catalyst until no further reaction took place, what would be the product?

A hexanol
B hexane
C 1-hexene
D propane

4. Warming with acidified potassium manganate(VII) can be used to identify

A ethanol
B ethanoic acid
C ethyl ethanoate
D chloroethane

5. Which one of the following compounds hydrolyses to form ethanoic acid?

A methyl propanoate
B ethyl ethanoate
C methanoic acid
D methanol

6. One use of methanol is

A in the manufacture of beer.
B as a solvent.
C as an oxidizing agent.
D to make plastic containers.

7. A large organic compound has molecular formula C40H80. Which homologous series is it most likely to belong to?

A alkane
B alkene
C ester
D alcohol

8. When propanol is warmed with an organic compound B together with concentrated sulfuric acid, propyl propanoate is formed.

What is B?

A propene
B propane
C propanoic acid
D methanoic acid

9. Methane, ethane, propane and butane are all gases at 200oC. Which gas has the weakest intermolecular forces attraction at the stated temperature?

A Methane
B Ethane
C Propane
D Butane

10. Which statement is correct about nylon?

A the monomers used are carboxylic acids and alcohols.
B it is formed by addition polymerization.
C Water molecules are eliminated in the process of polymerization.
D Hydrogen chloride molecules are eliminated in the process of polymerization.

11. Which statement is correct about poly(chloroethene) (PVC)?

A It is formed from the monomer chloroethane.
B It is an addition polymer.
C Small molecules are eliminated in the process of polymerization.
D It is a macromolecule which conducts electricity like graphite.

12. What are the products when butanoic acid reacts with zinc?

A Zinc butanoate and water
B No reaction is observed.
C Zinc butanoate and hydrogen gas.
D Zinc butanoate, water and carbon dioxide gas.

13. When large alkane molecules are cracked, what molecules are usually produced?

A only alkene molecules are produced.
B a mixture of hydrogen, alkanes and alkenes are produced.
C soot and hydrogen gas are produced.
D alkenes and hydrogen gas are produced.


14. What are the main products when bromine reacts with methane?

A bromomethane and hydrogen
B bromomethane and hydrogen bromide
C dibromomethane and hydrogen
D tribromomethane and tetrabromomethane

15. Which molecular formula represents an unsaturated hydrocarbon?

A C4H10
B C4H9Br
C C2H6O
D C5H10


Answers:

1.C
2.D
3.B
4.A
5.B
6.B
7.B
8.C
9.A
10.C
11.B
12.C
13.B
14.B
15.D

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