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Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.
Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.
Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion (A): Catalytic converters for reduction of oxides of nitroge...
Ans. (c) Catalytic converters requires a non-leaded fuel because the lead compound, along with its scavengers, affects the performance of the catalysts.
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Assertion (A): Catalytic converters for reduction of oxides of nitroge...
Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engine exhaust cannot be used with leaded fuels.
Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.
Explanation:
- A catalytic converter is a device used in the exhaust system of an internal combustion engine to reduce the emission of harmful pollutants. It contains a catalyst, which is a substance that accelerates the chemical reactions that convert harmful gases into less harmful substances.
- Leaded fuels contain compounds such as tetraethyl lead, which were used as octane boosters in older vehicles. However, leaded fuels have been phased out in most countries due to their harmful effects on human health and the environment.
- The catalyst in catalytic converters is typically made of precious metals such as platinum, palladium, and rhodium. These metals are highly effective in promoting the desired chemical reactions that reduce pollutants like nitrogen oxides (NOx) into nitrogen and oxygen.
- However, leaded fuels contain lead salts, which can chemically corrode and damage the catalyst. The lead salts react with the precious metals, forming compounds that can deactivate the catalyst and reduce its effectiveness.
- Therefore, catalytic converters designed for reduction of nitrogen oxides cannot be used with leaded fuels, as the lead salts present in the fuel would cause chemical corrosion and removal of the catalyst over time.
- It is important to note that the use of leaded fuels has been largely phased out, and most vehicles today are designed to run on unleaded fuels. Modern catalytic converters are specifically designed to work with unleaded fuels and are not compatible with leaded fuels.
- Hence, both Assertion (A) and Reason (R) are individually true. However, Reason (R) is not the correct explanation of Assertion (A) because it does not explain why catalytic converters cannot be used with leaded fuels. The correct explanation is the chemical corrosion and removal of the catalyst caused by lead salts present in leaded fuels.
- Therefore, the correct answer is option 'C'.
Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.
Explanation:
- A catalytic converter is a device used in the exhaust system of an internal combustion engine to reduce the emission of harmful pollutants. It contains a catalyst, which is a substance that accelerates the chemical reactions that convert harmful gases into less harmful substances.
- Leaded fuels contain compounds such as tetraethyl lead, which were used as octane boosters in older vehicles. However, leaded fuels have been phased out in most countries due to their harmful effects on human health and the environment.
- The catalyst in catalytic converters is typically made of precious metals such as platinum, palladium, and rhodium. These metals are highly effective in promoting the desired chemical reactions that reduce pollutants like nitrogen oxides (NOx) into nitrogen and oxygen.
- However, leaded fuels contain lead salts, which can chemically corrode and damage the catalyst. The lead salts react with the precious metals, forming compounds that can deactivate the catalyst and reduce its effectiveness.
- Therefore, catalytic converters designed for reduction of nitrogen oxides cannot be used with leaded fuels, as the lead salts present in the fuel would cause chemical corrosion and removal of the catalyst over time.
- It is important to note that the use of leaded fuels has been largely phased out, and most vehicles today are designed to run on unleaded fuels. Modern catalytic converters are specifically designed to work with unleaded fuels and are not compatible with leaded fuels.
- Hence, both Assertion (A) and Reason (R) are individually true. However, Reason (R) is not the correct explanation of Assertion (A) because it does not explain why catalytic converters cannot be used with leaded fuels. The correct explanation is the chemical corrosion and removal of the catalyst caused by lead salts present in leaded fuels.
- Therefore, the correct answer is option 'C'.
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Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
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Solutions for Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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ample number of questions to practice Assertion (A): Catalytic converters for reduction of oxides of nitrogen in engineexhaust cannot be used with leaded fuels.Reason (R): Catalyst will be removed due to chemical corrosion by lead salts.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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