Podcast
Questions and Answers
What is the purpose of adding pulverised sodium chloride to the sample?
What is the purpose of adding pulverised sodium chloride to the sample?
- To help in the extraction process (correct)
- To neutralize the sample
- To precipitate certain compounds
- To increase the density of the solution
Why is it important to avoid the formation of emulsion during extraction?
Why is it important to avoid the formation of emulsion during extraction?
- Emulsion hinders the extraction process
- Emulsion makes the solution difficult to filter
- Emulsion leads to inaccurate determination (correct)
- Emulsion causes loss of sample
After washing the chloroform extract free from mineral acid, what should be done next?
After washing the chloroform extract free from mineral acid, what should be done next?
- Heat the mixture to remove excess water
- Dry the chloroform layer over anhydrous sodium sulphate (correct)
- Discard the chloroform extract
- Add more mineral acid
What should be done after draining off the water phase from the chloroform extract?
What should be done after draining off the water phase from the chloroform extract?
What is the purpose of extracting with multiple portions of chloroform?
What is the purpose of extracting with multiple portions of chloroform?
Why is it important to let the sample stand for 2 hours before filtering?
Why is it important to let the sample stand for 2 hours before filtering?
What is the purpose of neutralizing to litmus paper using hydrochloric acid during determination?
What is the purpose of neutralizing to litmus paper using hydrochloric acid during determination?
What is the primary issue with the text provided?
What is the primary issue with the text provided?
Why is it important to avoid repetitive content in writing?
Why is it important to avoid repetitive content in writing?
What effect does excessive repetition have on the readability of a text?
What effect does excessive repetition have on the readability of a text?
Which aspect of writing is negatively impacted by repeated content?
Which aspect of writing is negatively impacted by repeated content?
How can writers improve the quality of their writing in light of the text's issue?
How can writers improve the quality of their writing in light of the text's issue?
What is the purpose of washing the chloroform extract free from mineral acid?
What is the purpose of washing the chloroform extract free from mineral acid?
Why is it important to let the sample stand for 2 hours before filtering?
Why is it important to let the sample stand for 2 hours before filtering?
What happens if an emulsion forms during extraction?
What happens if an emulsion forms during extraction?
Why is it necessary to extract with multiple portions of chloroform?
Why is it necessary to extract with multiple portions of chloroform?
What is the purpose of adding pulverized sodium chloride to the sample?
What is the purpose of adding pulverized sodium chloride to the sample?
Flashcards are hidden until you start studying
