Gas Chromatography Principles Quiz
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Questions and Answers

What is the function of the carrier gas in Gas Chromatography?

  • To bond to the inside of the column
  • To control the flow of the mobile phase
  • To stabilize the thermal properties of the analyte
  • To transport the sample through the system (correct)

What is the stationary phase in gas-liquid partition chromatography?

  • Solid support bonded to the column
  • Nonvolatile liquid bonded to the inside of the column (correct)
  • Carrier gas used for transportation
  • Gaseous mobile phase transporting the analyte

What must be the purity level of the carrier gas in Gas Chromatography?

  • Exactly 100%
  • Around 95%
  • Greater than 99.9995% (correct)
  • Between 80-90%

Which component of a Gas Chromatograph is responsible for controlling the flow of the mobile phase?

<p>Flow control (B)</p> Signup and view all the answers

What type of compounds are suitable for GC analysis?

<p>Compounds with sufficient volatility and thermal stability (B)</p> Signup and view all the answers

What are the different ways of Measures of departure from central tendency?

<p>Variance, Standard deviation, Range (B)</p> Signup and view all the answers

What are the different ways of Measures of central tendency?

<p>Mean, Median, Mode (B)</p> Signup and view all the answers

If the Standard deviation and Mean of a data is 2 and 20 respectively, calculate coefficient of variation.

<p>10% (B)</p> Signup and view all the answers

The limit on the Relative standard deviation for one of the analytical methods is set as ≤ 5%. If the Relative standard deviation obtained for the same method at a later stage is 2.5%, is the method considered acceptable?

<p>Yes, the method is considered acceptable (B)</p> Signup and view all the answers

What is Relative standard deviation and how is it presented (unitage)?

<p>It is the standard deviation expressed as a percentage of the mean (A)</p> Signup and view all the answers

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