Organic Chemistry MCQ

The MAJOR natural source of alkanes and alkenes is

• (A) petroleum
• (B) natural gas
• (C) the earth's crust
• (D) the atmosphere

When large alkane molecules are cracked, the products are a mixture of

• (A) small alkane molecules
• (B) small alkene molecules
• (C) large and small alkane molecules
• (D) small alkane and alkene molecules

Choose the compound that has the formula shown in the picture.

• (A) an alkene

• (B) an unsaturated acid

• (C) a carboxylic acid

• (D) a polymer

Look at the structure in the picture, then determine which homologous series it belongs to.

• (A) Acids

• (B) Alkenes

• (C) Alkanes

• (D) Alcohols

All members of a homologous series have similar

• (A) densities

• (B) boiling points

• (C) chemical properties

• (D) physical properties

The number of shared electron pairs in a methane molecule is

• (A) 4
• (B) 6
• (C) 8
• (D) 10

Which of the following compounds is NOT a member of the alkene series?

• 
• 
• 
• 

Look at the picture and decide which of the following structures correctly represents an unsaturated hydrocarbon?

• (A)
• (B)
• (C)
• (D)

Look at the picture below and decide which picture shows a branched alkane.

• I and II only
• I and IV only
• III and IV only
• I, II and III

Look at the picture below and decide which compound is obtained when hydrocarbons with 5 to 12 carbon atoms are cracked.

• I and II only

• I and IV only

• I, II and III only

• II, III and IV only