A retention gap is placed between the injector and the front of the column to Options: A . &nbspAll of these B . &nbspprevent backflush of the injected solution C . &nbspretain contaminants and prevent them from reaching the column D . &nbspretain the sample and release it gradually to the column

A retention gap is placed between the injector and the front of the column to

Question

A retention gap is placed between the injector and the front of the column to

Options:

A . All of these

B . prevent backflush of the injected solution

C . retain contaminants and prevent them from reaching the column

D . retain the sample and release it gradually to the column

Answer: Option C

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Question 1. Split injection is carried out by....

Question 2. Headspace analysis is carried out in order to....

Question 3. Which of the following detectors give mass flow-dependent signals?....

Question 4. Theoretical plates are used to....

Question 5. The column is heated to....

Question 6. Helium is generally preferred as carrier gas over nitrogen and hydrogen because....

Question 7. What does the selectivity factor describe?....

Question 8. What are the benefits of decreasing the column internal diameter?....

Question 9. Sample retention in the column is measured by....

Question 10. Column bleeding occurs when....

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