FREE Gaokao Chemistry: Organic Chemistry Fundamentals Questions and Answers

Question 1

Which of the following pairs of substances are isomers of each other?

Accepted Answer

Ethanol (C2H5OH) and Dimethyl ether (CH3OCH3)

Answer

Methane (CH4) and Ethane (C2H6)

Answer

Propene (C3H6) and Propyne (C3H4)

Answer

1-Propanol and 2-Propanol

Question 2

Which of the following organic compounds can decolorize both acidic potassium permanganate (KMnO4) solution and bromine water?

Accepted Answer

Ethene

Answer

Ethane

Answer

Benzene

Answer

Ethanol

Question 3

What is the correct IUPAC name for the compound with the structure CH3CH(CH3)CH2COOH?

Accepted Answer

3-Methylbutanoic acid

Answer

2-Methylbutanoic acid

Answer

1,2-Dimethylpropanoic acid

Answer

Isopentanoic acid

Question 4

The reaction of benzene with concentrated nitric acid and concentrated sulfuric acid at 50-60°C to produce nitrobenzene is an example of what type of reaction?

Accepted Answer

Substitution reaction

Answer

Addition reaction

Answer

Elimination reaction

Answer

Oxidation reaction

Question 5

Which of the following statements correctly describes a property of ethanoic acid (acetic acid)?

Accepted Answer

It can react with sodium carbonate to produce CO2 gas.

Answer

It is a strong acid that fully dissociates in water.

Answer

It cannot be oxidized by any common oxidizing agents.

Answer

It is less acidic than ethanol.

Question 6

The monomer used to produce the polymer polyethylene is:

Accepted Answer

CH2=CH2

Answer

CH≡CH

Answer

CH3-CH3

Answer

CH2=CHCl