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Priya placed two drops of a liquid on cooked rice which turned the rice blue- black. What could be the liquid?
- a)Vegetable oil
- b)Iodine solution
- c)Benedict's solution
- d)Nitrate solution
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Priya placed two drops of a liquid on cooked rice which turned the ric...
Rice is a rich source of starch. When iodine solution is added. It will turn to blue-black colour.
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Priya placed two drops of a liquid on cooked rice which turned the ric...
**Explanation:**
To understand why the rice turned blue-black when two drops of liquid were added, we need to analyze each of the given options and determine which one could be responsible for this color change.
**a) Vegetable oil:** Vegetable oil is a common cooking oil and it is colorless. Adding two drops of vegetable oil to rice would not cause it to turn blue-black. Therefore, option 'a' can be eliminated.
**b) Iodine solution:** Iodine solution is a commonly used chemical reagent that is brown in color. When iodine solution comes into contact with starch, it can cause a color change. Starch is a component of rice, and when iodine solution is added to rice, it turns blue-black. Therefore, option 'b' is the correct answer.
**c) Benedict's solution:** Benedict's solution is used to test for the presence of reducing sugars, such as glucose. It is blue in its original form. However, when heated with a reducing sugar, it changes color to green, yellow, orange, or red depending on the concentration of the sugar. Benedict's solution does not turn rice blue-black, so option 'c' can be eliminated.
**d) Nitrate solution:** Nitrate solutions are usually colorless. Adding two drops of nitrate solution to rice would not cause it to turn blue-black. Therefore, option 'd' can be eliminated.
In conclusion, when two drops of a liquid were added to cooked rice and it turned blue-black, the liquid could be iodine solution. Iodine solution reacts with the starch in rice to produce a blue-black color.
To understand why the rice turned blue-black when two drops of liquid were added, we need to analyze each of the given options and determine which one could be responsible for this color change.
**a) Vegetable oil:** Vegetable oil is a common cooking oil and it is colorless. Adding two drops of vegetable oil to rice would not cause it to turn blue-black. Therefore, option 'a' can be eliminated.
**b) Iodine solution:** Iodine solution is a commonly used chemical reagent that is brown in color. When iodine solution comes into contact with starch, it can cause a color change. Starch is a component of rice, and when iodine solution is added to rice, it turns blue-black. Therefore, option 'b' is the correct answer.
**c) Benedict's solution:** Benedict's solution is used to test for the presence of reducing sugars, such as glucose. It is blue in its original form. However, when heated with a reducing sugar, it changes color to green, yellow, orange, or red depending on the concentration of the sugar. Benedict's solution does not turn rice blue-black, so option 'c' can be eliminated.
**d) Nitrate solution:** Nitrate solutions are usually colorless. Adding two drops of nitrate solution to rice would not cause it to turn blue-black. Therefore, option 'd' can be eliminated.
In conclusion, when two drops of a liquid were added to cooked rice and it turned blue-black, the liquid could be iodine solution. Iodine solution reacts with the starch in rice to produce a blue-black color.
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Priya placed two drops of a liquid on cooked rice which turned the rice blue- black. What could be the liquid?a)Vegetable oilb)Iodine solutionc)Benedict's solutiond)Nitrate solutionCorrect answer is option 'B'. Can you explain this answer? for Class 6 2025 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Priya placed two drops of a liquid on cooked rice which turned the rice blue- black. What could be the liquid?a)Vegetable oilb)Iodine solutionc)Benedict's solutiond)Nitrate solutionCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Priya placed two drops of a liquid on cooked rice which turned the rice blue- black. What could be the liquid?a)Vegetable oilb)Iodine solutionc)Benedict's solutiond)Nitrate solutionCorrect answer is option 'B'. Can you explain this answer?.
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