Which of the following is not an isomer of hexane? ...

[penza]

Which of the following is not an isomer of hexane?
  1.2,2-dimethylbutane
  2.2,2-dimethylpentane
  3.3-methylpentane
  4.2-methylpentane
  5.2,3-dimethylbutane

Question 2

What is the systematic name of the alkane shown below?
 
  1.3,7-dimethyl-4-propyloctane
  2.2-methyl-5-(1-methylpropyl)octane
  3.2-ethyl-6-methyl-3-propylheptane
  4.3-methyl-4-(3-methylbutyl)heptane
  5.2,6-dimethyl-5-propyloctane

Question 3

What is the best IUPAC name for the following compound?
 
  1.2-ethyl-3-isopropylhexane
  2.1-isopropyl-3-ethylhexane
  3.4-isopropyl-5-ethylhexane
  4.3-methyl-4-isopropylheptane
  5.4-isopropyl-3-methylheptane

Question 4

Which of the following choices is not an alkane?
  1.C12H26
  2.C10H20
  3.C11H24
  4.C16H34
  5.C20H42

[C.mcnichol98]

Answer to Question 1

2

Answer to Question 2

5

Answer to Question 3

5

Answer to Question 4

2

[penza]

Gracias!

[robbielu01]

Wow, this really help