• A.   A homologous series is a group of compounds with the same molecular formula.
• B.   The members of the homologous series have the same chemical properties.
• C.   The compounds of the homologous series share the same functional group.
• D.   Each member of the homologous series differs from the next by a common structural unit.

2. Which of the following formulae represents the molecule butanone specifically?

• A.   CH₃CH₂CH(OH)CH₃
• B.   C₄H₈O
• C.  
• D.  

Questions 3-5 are about the six organic compounds below labelled I, II, III, IV, V, VI:

I.	II.	III.
Pentan-2-ol		CH3CHFCH3
IV.	V.	VI.

3. Which compounds are members of the halogenoalkane homologous series?

• A. I and V
• B. IV and VI 
• C. II and III
• D. I and III 

4. Which compounds are unsaturated?

• A.  I, II, III
• B.  III, IV, VI
• C.  I, V, VI 
• D.  IV, V, VI

5. Which compound(s) can form hydrogen bonds between molecules?

• A. I and V
• B. V and VI 
• C. II and III
• D. I and III 

6.Which statements are correct about the molecule below?

• A.   I only
• B.   I and III only
• C.   II and III only
• D.   I, II and III

• A.   CH₃(CH₂)₂CH₃ < CH₃(CH₂)₂NH₂ < CH₃CH₂Cl
• B.   CH₃CH₂Cl < CH₃(CH₂)₂NH₂ < CH₃(CH₂)₂CH₃
• C.   CH₃CH₂Cl < CH₃(CH₂)₂CH₃ < CH₃(CH₂)₂NH₂
• D.   CH₃(CH₂)₂CH₃ < CH₃CH₂Cl < CH₃(CH₂)₂NH₂

8. Which functional groups are present in this molecule?

• A. Alkenyl, phenyl, carboxyl, amine
• B. Carbonyl, hydroxyl, alkenyl, phenyl, amine
• C. Carboxamide, alkenyl, hydroxyl, phenyl
• D. Phenyl, alkenyl, carboxyl, nitrile

9. Which of the following compounds can form hydrogen bonds between its molecules?

• A.   I only
• B.   I and III only
• C.   II and III only
• D.   I, II and III

10. Which of the following compounds contains an amido functional group?