Class 6 Exam > Class 6 Questions > Iodine solution is used to testa)Starchb)Vita...
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Iodine solution is used to test
- a)Starch
- b)Vitamin D
- c)Protein
- d)Fats
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorre...
The iodine test is used to test for the presence of starch. Starch turns an intense "blue-black" colour upon addition of aqueous solutions of the triiodide anion, due to the formation of an intermolecular charge-transfer complex. In the absence of starch, the brown colour of the aqueous solution remains.
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Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorre...
Test for Carbohydrates:
- Take small quantity of the food item to be tested on a porcelain tile.
- Dilute it with two drops of water.
- Put 2-3 drops of iodine solution on it.
- Observe the colour of the food item.
- Change of colour in the food item into blue-black indicates the presence of starch in the food item.
Hence, Iodine solution is used to test the presence of starch in a food item by observing the colour change.
Test for Proteins:
- Take a small quantity of the food item to be tested.
- Grind the food item and powder it by mashing.
- Put the food item into a test tube.
- Add 10 drops of water into the same test tube.
- Add two drops of copper sulphate solution to the same test tube.
- Add 10 drops of caustic soda solution and shake the same test tube.
- Observe the colour of the mixture.
- Violet colour indicates the presence of proteins in the tested food item.
Test for Fats:
- Take a small quantity of the food item to be tested.
- Wrap the food item in a small piece of paper.
- Crush the food item wrapped in the paper.
- Straighten the paper.
- Dry the paper by keeping it in sunlight for a while. Observe the paper.
- An oily patch on the paper indicates the presence of fat in the tested food item.
- Vitamins are required in trace amounts, and play a major role in protection against diseases. They have lesser nutritive value, but we cannot say that they don’t have any nutritional value.
Hence, the answer is Option A.
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Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer?
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Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer? for Class 6 2024 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 6 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer?.
Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer? for Class 6 2024 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 6 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Iodine solution is used to testa)Starchb)Vitamin Dc)Proteind)FatsCorrect answer is option 'A'. Can you explain this answer?.
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