QUESTION 1 Which of the following results indicates that a different developing

Question

QUESTION 1 Which of the following results indicates that a different developing solvent should be used? Spots don't move. All samples move with the solvent front. The spots cannot be clearly differentiated. All of the above. QUESTION 2 What is 'visualization' in reference to TLC? Visualization is the process of converting colorless samples (spots) into visible spots. Visualization is the ability to see the answer, i.e., when the mental lightbulb illuminates. Visualization refers to the necessity of drawing a line around colored spots when measuring to calculate Rf values. Visualization is the ability to see and mark the solvent front on a chromatogram before the mobile phase evaporates

Explanation / Answer

Ans 1 : All of the above

The developing solvent should be able to help us differentiate between the test samples in a solution or mixture. If all the samples behave the same in its presence , then the solvent does not serve its purpose. So in such a case different solvent must be used.

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