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The breath test conducted by police to check drunken driver has which one of the following on the filter paper?
- a)Potassium dichromate-sulfuric acid
- b)Potassium permanganate-sulfuric acid
- c)Silica gel coated with silver nitrate
- d)Turmeric
- e)None of the above / More than one of the above
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
The breath test conducted by police to check drunken driver has which ...
The correct answer is Potassium dichromate-sulfuric acid.
- It a test to check the presence of alcohol in a person's blood & carried out on samples of breath provided by the person.
- It is done with the help of filter paper made of Potassium dichromate-sulfuric acid.
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Community Answer
The breath test conducted by police to check drunken driver has which ...
Overview of the Breath Test
The breath test is a common method used by police to assess whether a driver is under the influence of alcohol. The test typically involves the use of a device that analyzes the breath for alcohol content.
Chemical Reaction Involved
The correct answer to the presence of substances on the filter paper in the breathalyzer is:
How It Works
- Chemical Composition: The potassium dichromate in the breath test reacts with alcohol present in the breath samples.
- Oxidation Process: When the breath containing ethanol (alcohol) passes through the solution, the ethanol gets oxidized to acetic acid, and the potassium dichromate gets reduced from Cr(VI) to Cr(III).
- Color Change Indicator: This reaction causes a color change in the solution, which can be measured to determine the blood alcohol content (BAC) in the breath.
Why Not Other Options?
- Potassium Permanganate-Sulfuric Acid: This also undergoes redox reactions but is not standard in breath tests.
- Silica Gel Coated with Silver Nitrate: Not used in breath tests; it serves different purposes in chemical analysis.
- Turmeric: While it has pH indicators, it is not relevant in the context of breathalyzer tests.
Conclusion
In conclusion, potassium dichromate-sulfuric acid is the correct chemical used in the filter paper of breath tests to detect alcohol levels accurately, making it essential for assessing whether a driver is sober or intoxicated.
The breath test is a common method used by police to assess whether a driver is under the influence of alcohol. The test typically involves the use of a device that analyzes the breath for alcohol content.
Chemical Reaction Involved
The correct answer to the presence of substances on the filter paper in the breathalyzer is:
- Potassium dichromate-sulfuric acid
How It Works
- Chemical Composition: The potassium dichromate in the breath test reacts with alcohol present in the breath samples.
- Oxidation Process: When the breath containing ethanol (alcohol) passes through the solution, the ethanol gets oxidized to acetic acid, and the potassium dichromate gets reduced from Cr(VI) to Cr(III).
- Color Change Indicator: This reaction causes a color change in the solution, which can be measured to determine the blood alcohol content (BAC) in the breath.
Why Not Other Options?
- Potassium Permanganate-Sulfuric Acid: This also undergoes redox reactions but is not standard in breath tests.
- Silica Gel Coated with Silver Nitrate: Not used in breath tests; it serves different purposes in chemical analysis.
- Turmeric: While it has pH indicators, it is not relevant in the context of breathalyzer tests.
Conclusion
In conclusion, potassium dichromate-sulfuric acid is the correct chemical used in the filter paper of breath tests to detect alcohol levels accurately, making it essential for assessing whether a driver is sober or intoxicated.
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The breath test conducted by police to check drunken driver has which one of the following on the filter paper?a)Potassium dichromate-sulfuric acidb)Potassium permanganate-sulfuric acidc)Silica gel coated with silver nitrated)Turmerice)None of the above / More than one of the aboveCorrect answer is option 'A'. Can you explain this answer?
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