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Questions and Answers
What color change is observed when Pyrogallol tannins are treated with FeCl3 T.S.?
What color change is observed when Pyrogallol tannins are treated with FeCl3 T.S.?
- Blue color (correct)
- Red color
- Yellow color
- Green color
Which of the following is a property of Catechol tannins when boiled with HCl?
Which of the following is a property of Catechol tannins when boiled with HCl?
- Forms a yellow precipitate
- Remains unchanged
- Turns black
- Forms an insoluble red Phlobaphenes (correct)
What type of tannin forms a precipitate when treated with Bromine T.S.?
What type of tannin forms a precipitate when treated with Bromine T.S.?
- Pyrogallol tannins
- Ellagic acid tannins
- Gallic acid tannins
- Catechol tannins (correct)
Which of the following is a common source of Pyrogallol tannins?
Which of the following is a common source of Pyrogallol tannins?
What is a notable use of tannins mentioned in the text?
What is a notable use of tannins mentioned in the text?
What is the characteristic color obtained when non-hydrolysable tannins are treated with acids/enzymes?
What is the characteristic color obtained when non-hydrolysable tannins are treated with acids/enzymes?
Which of the following is a pseudotannin that is a derivative of Flavan?
Which of the following is a pseudotannin that is a derivative of Flavan?
What color precipitate is obtained when pseudotannins react with Bromides?
What color precipitate is obtained when pseudotannins react with Bromides?
Which polyphenol structure is associated with Catechins in the biosynthesis of molecules?
Which polyphenol structure is associated with Catechins in the biosynthesis of molecules?
What do true tannins convert into when subjected to dry distillation?
What do true tannins convert into when subjected to dry distillation?
Which of the following is NOT an example of a pseudotannin?
Which of the following is NOT an example of a pseudotannin?
What can be said about the properties of tannins based on the text?
What can be said about the properties of tannins based on the text?
Which enzymes can hydrolyze Hydrolysable Tannins according to the text?
Which enzymes can hydrolyze Hydrolysable Tannins according to the text?
What type of acid is formed when Hydrolysable Tannins are hydrolyzed according to the text?
What type of acid is formed when Hydrolysable Tannins are hydrolyzed according to the text?
How are Non-Hydrolysable Tannins classified based on the text?
How are Non-Hydrolysable Tannins classified based on the text?
What color change is observed when Hydrolysable Tannins react with Ferric chloride?
What color change is observed when Hydrolysable Tannins react with Ferric chloride?
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