MCQ on Gas Chromatography with Answers PDF







Gas Chromatography (GC) is a powerful analytical technique used to separate, identify, and quantify volatile compounds in a mixture. In GC, the sample is vaporized and carried by an inert gas (the mobile phase) through a column packed with a stationary phase. As the sample travels through the column, its components interact differently with the stationary phase, leading to their separation based on volatility and affinity. A detector at the column’s end records the separated compounds as they exit. GC is widely used in environmental analysis, forensic science, petrochemical industries, and quality control in various fields. This is an MCQ on Gas Chromatography with answers. You can download the PDF of this questions from the download link provided in the result page of the quiz.

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1. 
In gas chromatography, what is the primary role of the stationary phase?

2. 
What is the main function of the carrier gas in gas chromatography?

3. 
Which detector is commonly used in gas chromatography for its high sensitivity to organic compounds?

4. 
What is the main advantage of using a capillary column in gas chromatography over a packed column?

5. 
Which type of detector in gas chromatography is particularly useful for detecting inorganic gases?

6. 
In gas chromatography, what is meant by the term "retention time"?

7. 
What type of sample introduction technique is commonly used for volatile compounds in gas chromatography?

8. 
What parameter in gas chromatography is directly related to the efficiency of the separation?

9. 
Which of the following factors is not typically a concern when optimizing gas chromatography conditions?

10. 
What role does the column temperature play in gas chromatography?

11. 
What is the purpose of using a guard column in gas chromatography?

12. 
Which of the following is not a type of stationary phase used in gas chromatography?

13. 
What is the primary advantage of using an electronic pressure control (EPC) system in gas chromatography?

14. 
In gas chromatography, what type of interaction primarily governs the separation of analytes?

15. 
How does the choice of carrier gas affect the performance of a gas chromatography system?

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