Question #1: Which of the following conformations of butane is the most stable?

1
2 and 5
3
4
3 and 4

Question #2: The following structure represents:

the lowest energy conformation of cis-1,2-dimethylcyclohexane.
cis-1,2-dimethylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1,2-dimethylcyclohexane.
trans-1,2-dimethylcyclohexane but not the lowest energy conformation.
none of the above

Question #3: Which of the following conformations of butane is the least stable?

1
2 and 5
3
4
3 and 4

Question #4: Which of the following conformations of propane is called an "eclipsed conformation"?
      

1
2
both 1 and 2
neither 1 or 2

Question #5: Which of the following conformations of butane is called a "gauche conformation"?

1
2 and 5
3
4
3 and 4

Question #6: Which of the following conformations of butane has the lowest energy?

1
2 and 5
3
4
3 and 4

Question #7: The following structure represents:

the lowest energy conformation of cis-1-ethyl-4-methylcyclohexane.
cis-1-ethyl-4-methylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1-ethyl-4-methylcyclohexane.
trans-1-ethyl-4-methylcyclohexane but not the lowest energy conformation.
none of the above

Question #8: The following structure represents:

the lowest energy conformation of cis-1,4-dimethylcyclohexane.
cis-1,4-dimethylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1,4-dimethylcyclohexane.
trans-1,4-dimethylcyclohexane but not the lowest energy conformation.
none of the above

Question #9:  Which of the following conformations of butane is called an "eclipsed conformation"?

1
2 and 5
3
4
3 and 4

Question #10: Which of the following conformations of butane is called an "anti conformation"?

1
2 and 5
3
4
3 and 4

Question #11: Which of the following conformations of propane is called a "staggered conformation"?
   

1
2
both 1 and 2
neither 1 and 2

Question #12: Which of the following conformations of butane is called a "totally eclipsed conformation"?

1
2 and 5
3
4
3 and 4

Question #13:  The following structure represents:

the lowest energy conformation of cis-1-ethyl-4-methylcyclohexane.
cis-1-ethyl-4-methylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1-ethyl-4-methylcyclohexane.
trans-1-ethyl-4-methylcyclohexane but not the lowest energy conformation.
none of the above

Question #14: The following structure represents:

the lowest energy conformation of cis-1,2-dimethylcyclohexane.
cis-1,2-dimethylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1,2-dimethylcyclohexane.
trans-1,2-dimethylcyclohexane but not the lowest energy conformation.
none of the above

Question #15: Which of the following conformations of propane has the highest energy?
    

1
2
both 1 and 2
neither 1 or 2

Question #16: Which of the following conformations of propane is the most stable?

1
2
both 1 and 2
neither 1 or 2

Question #17: Which of the following conformations of butane has the highest energy?

1
2 and 5
3
4
3 and 4

Question #18:  The following structure represents:

the lowest energy conformation of cis-1-isopropyl-2-methylcyclohexane.
cis-1-isopropyl-2-methylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1-isopropyl-2-methylcyclohexane.
trans-1-isopropyl-2-methylcyclohexane but not the lowest energy conformation.
none of the above

Question #19: The following structure represents:

the lowest energy conformation of cis-1-ethyl-2-methylcyclohexane.
cis-1-ethyl-2-methylcyclohexane but not the lowest energy conformation.
the lowest energy conformation of trans-1-ethyl-2-methylcyclohexane.
trans-1-ethyl-2-methylcyclohexane but not the lowest energy conformation.
none of the above

Question #20: Which of the following conformations of propane has the lowest energy?

1
2
both 1 and 2
neither 1 or 2