Multiple choice

Among the following alkanes -------------------- is used as an internal standard in gas chromatography.

  1. dodecane

  2. undecane

  3. decane

  4. nonane

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Undecane (also known as hendecane) is a liquid alkane hydrocarbon. It is used as a mild sex attractant for various types of moths and cockroaches, and an alert signal for a variety of ants. It has 159 isomers. Undecane may also be used as an internal standard in gas chromatography when working with other hydrocarbons.