Hydrocarbons

Topics in this chapter

• Alkane Chemistry
• Alkene Reactions and Ozonolysis
• Alkyne Chemistry and Reactions
• Stereochemistry and Conformations
• Aromaticity and Benzene Reactions

Cheat sheet

Practice questions

1. Question 1Q-5F9244

   Which of the following compounds has the highest boiling point?

   1. A.n-Pentane
   2. B.2-Methylbutane
   3. C.2,2-Dimethylpropane
   4. D.n-Butane
   See the answer and solution
2. Question 2Q-2F587F

   In the free radical chlorination of methane, which of the following steps represents the propagation step?

   1. A.Cl2 -> 2 Cl•
   2. B.•CH3 + Cl• -> CH3Cl
   3. C.•CH3 + Cl2 -> CH3Cl + Cl•
   4. D.Cl• + CH4 -> •CH3 + HCl
   See the answer and solution
3. Question 3Q-8E879B

   The Newman projection of ethane shown as the staggered conformation is more stable than the eclipsed conformation due to:

   1. A.Minimum torsional strain
   2. B.Maximum van der Waals repulsion
   3. C.Hydrogen bonding
   4. D.Electrostatic attraction between carbon and hydrogen
   See the answer and solution
4. Question 4Q-5C400B

   Which of the following reagents can be used to convert an alkyne to a cis-alkene?

   1. A.Na in liquid NH3
   2. B.H2 in the presence of Lindlar's catalyst
   3. C.Zn/HCl
   4. D.Red phosphorus and HI
   See the answer and solution
5. Question 5Q-3509E0

   When 2-methylbut-2-ene is treated with HCl, the major product formed is:

   1. A.1-chloro-2-methylbutane
   2. B.2-chloro-2-methylbutane
   3. C.2-chloro-3-methylbutane
   4. D.1-chloro-3-methylbutane
   See the answer and solution