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Which of the following factors are responsible formation of NO, in spark ignition engine combustion:
1. Incomplete combustion
2. High temperature
3. Availability of oxygen.
Select the correct answer.
1. Incomplete combustion
2. High temperature
3. Availability of oxygen.
Select the correct answer.
- a)1 and 2
- b)2 and 3
- c)1 and 3
- d)1, 2 and 3
Correct answer is option 'A'. Can you explain this answer?
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Which of the following factors are responsible formation of NO, in spa...
Ans. (a) NOx is formed due to incomplete combustion and at high temperature.
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Which of the following factors are responsible formation of NO, in spa...
Factors responsible for the formation of NO in spark ignition engine combustion are incomplete combustion and high temperature.
Incomplete Combustion:
Incomplete combustion occurs when there is insufficient oxygen available during the combustion process. This can happen due to factors such as a rich air-fuel mixture or inadequate mixing of the air and fuel. In such cases, the fuel does not burn completely, leading to the production of nitrogen monoxide (NO). NO is formed when the nitrogen in the air combines with oxygen from the combustion process.
High Temperature:
High temperatures in the combustion chamber can also contribute to the formation of NO. When the temperature is elevated, the nitrogen and oxygen in the air react more readily to form NO molecules. The high temperatures are typically found in the flame front or near the spark plug where the combustion process is most intense.
Availability of Oxygen:
The presence of oxygen is necessary for the formation of NO. Oxygen combines with nitrogen during the combustion process to form NO. If there is insufficient oxygen available, the formation of NO will be limited. However, if there is an excess of oxygen, it can lead to the formation of nitrogen dioxide (NO2), which is a more harmful pollutant.
Explanation of Correct Answer:
The correct answer to the question is option A, which states that factors responsible for the formation of NO in spark ignition engine combustion are incomplete combustion and high temperature. This is because incomplete combustion and high temperatures contribute to the production of nitrogen monoxide (NO) during the combustion process. Availability of oxygen is a necessary condition for the formation of NO, but it is not sufficient on its own. Therefore, option B, which includes availability of oxygen as a factor, is not correct. Option C, which includes incomplete combustion and availability of oxygen, is also not correct as high temperature is also a significant factor. Option D, which includes all three factors, is not correct as availability of oxygen alone does not lead to the formation of NO. Thus, the correct answer is option A.
Incomplete Combustion:
Incomplete combustion occurs when there is insufficient oxygen available during the combustion process. This can happen due to factors such as a rich air-fuel mixture or inadequate mixing of the air and fuel. In such cases, the fuel does not burn completely, leading to the production of nitrogen monoxide (NO). NO is formed when the nitrogen in the air combines with oxygen from the combustion process.
High Temperature:
High temperatures in the combustion chamber can also contribute to the formation of NO. When the temperature is elevated, the nitrogen and oxygen in the air react more readily to form NO molecules. The high temperatures are typically found in the flame front or near the spark plug where the combustion process is most intense.
Availability of Oxygen:
The presence of oxygen is necessary for the formation of NO. Oxygen combines with nitrogen during the combustion process to form NO. If there is insufficient oxygen available, the formation of NO will be limited. However, if there is an excess of oxygen, it can lead to the formation of nitrogen dioxide (NO2), which is a more harmful pollutant.
Explanation of Correct Answer:
The correct answer to the question is option A, which states that factors responsible for the formation of NO in spark ignition engine combustion are incomplete combustion and high temperature. This is because incomplete combustion and high temperatures contribute to the production of nitrogen monoxide (NO) during the combustion process. Availability of oxygen is a necessary condition for the formation of NO, but it is not sufficient on its own. Therefore, option B, which includes availability of oxygen as a factor, is not correct. Option C, which includes incomplete combustion and availability of oxygen, is also not correct as high temperature is also a significant factor. Option D, which includes all three factors, is not correct as availability of oxygen alone does not lead to the formation of NO. Thus, the correct answer is option A.
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Which of the following factors are responsible formation of NO, in spark ignition engine combustion:1. Incomplete combustion2. High temperature3. Availability of oxygen.Select the correct answer.a)1 and 2b)2 and 3c)1 and 3d)1, 2 and 3Correct answer is option 'A'. Can you explain this answer?
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