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What is used to test for the presence of starch in food?
- a)Iodine solution
- b)Copper sulphate
- c)Caustic soda
- d)Litmus paper
Correct answer is option 'A'. Can you explain this answer?
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What is used to test for the presence of starch in food?a)Iodine solut...
To test for starch in food, an iodine solution is used. A blue-black color indicates the presence of starch.
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What is used to test for the presence of starch in food?a)Iodine solut...
Testing for Starch in Food
The presence of starch in food can be effectively tested using iodine solution. Here’s how it works:
How Iodine Solution Works
- Iodine solution, when added to a sample containing starch, will undergo a chemical reaction.
- The iodine molecules interact with the starch and form a complex that results in a characteristic color change.
Color Change Indication
- If starch is present, the iodine solution will change from a brownish color to a deep blue or black.
- No color change (remaining brown) indicates that starch is absent.
Why Other Options Are Not Suitable
- Copper Sulphate: Primarily used in testing for proteins, not starch.
- Caustic Soda: An alkaline solution that can be harmful and does not indicate starch presence.
- Litmus Paper: Used for testing acidity or alkalinity, not for identifying starch.
Conclusion
Using iodine solution is a simple and effective method to detect starch in various food items. This test is widely used in educational settings to teach students about carbohydrates and their properties.
The presence of starch in food can be effectively tested using iodine solution. Here’s how it works:
How Iodine Solution Works
- Iodine solution, when added to a sample containing starch, will undergo a chemical reaction.
- The iodine molecules interact with the starch and form a complex that results in a characteristic color change.
Color Change Indication
- If starch is present, the iodine solution will change from a brownish color to a deep blue or black.
- No color change (remaining brown) indicates that starch is absent.
Why Other Options Are Not Suitable
- Copper Sulphate: Primarily used in testing for proteins, not starch.
- Caustic Soda: An alkaline solution that can be harmful and does not indicate starch presence.
- Litmus Paper: Used for testing acidity or alkalinity, not for identifying starch.
Conclusion
Using iodine solution is a simple and effective method to detect starch in various food items. This test is widely used in educational settings to teach students about carbohydrates and their properties.
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What is used to test for the presence of starch in food?a)Iodine solutionb)Copper sulphatec)Caustic sodad)Litmus paperCorrect answer is option 'A'. Can you explain this answer?
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