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With respect to I.C. engine emissions, consider the following statements:
1. Evaporative emissions have no carbon monoxide and oxides of nitrogen.
2. Blow by emissions is essentially carbon monoxide and suspended particulate matter. 
3. Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.
4. There are no suspended particulates in the exhaust.Of these statements are correct
  • a)
    1 and 4
  • b)
    1 and 3
  • c)
    2 and 3
  • d)
    1, 2, 3, and 4
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
With respect to I.C. engine emissions, consider the following statemen...
Ans. (c) Evaporative emissions account for 15 to 25 per cent of total hydrocarbon emission from a gasoline engine. The two main sources of evaporative emissions are the fuel tank and the carburettor.
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Most Upvoted Answer
With respect to I.C. engine emissions, consider the following statemen...
Explanation:

Evaporative emissions, blow by emissions, and exhaust emissions are all types of emissions produced by internal combustion engines. Let's analyze each statement to determine which ones are correct.

Statement 1: Evaporative emissions have no carbon monoxide and oxides of nitrogen.
This statement is true. Evaporative emissions occur when fuel evaporates from the fuel system and is released into the atmosphere. These emissions primarily consist of volatile organic compounds (VOCs) and do not contain carbon monoxide (CO) or oxides of nitrogen (NOx).

Statement 2: Blow by emissions is essentially carbon monoxide and suspended particulate matter.
This statement is false. Blow by emissions occur when combustion gases leak past the piston rings into the crankcase. These emissions primarily consist of unburned hydrocarbons, carbon monoxide, oxides of nitrogen, and water vapor. Suspended particulate matter may also be present in blow by emissions.

Statement 3: Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen, and around 50-55% of hydrocarbons emitted by the engine.
This statement is false. Exhaust emissions consist of a mixture of gases that are byproducts of the combustion process. While exhaust emissions do contain carbon monoxide and oxides of nitrogen, the percentage of hydrocarbons emitted by the engine can vary depending on several factors such as the fuel type, engine condition, and emission control systems. The percentage of hydrocarbons in exhaust emissions is typically higher than 50-55%.

Statement 4: There are no suspended particulates in the exhaust.
This statement is false. Exhaust emissions can contain suspended particulate matter, which includes solid particles and liquid droplets. These particulates can be formed as a result of incomplete combustion, fuel additives, lubricating oil, or other contaminants in the combustion process.

Therefore, the correct statements are 1 and 3. Evaporative emissions have no carbon monoxide and oxides of nitrogen, and exhaust emissions contain carbon monoxide, oxides of nitrogen, and a varying percentage of hydrocarbons emitted by the engine.
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With respect to I.C. engine emissions, consider the following statements:1. Evaporative emissions have no carbon monoxide and oxides of nitrogen.2. Blow by emissions is essentially carbon monoxide and suspended particulate matter.3. Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.4. There are no suspended particulates in the exhaust.Of these statements are correcta)1 and 4b)1 and 3c)2 and 3d)1, 2, 3, and 4Correct answer is option 'C'. Can you explain this answer?
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With respect to I.C. engine emissions, consider the following statements:1. Evaporative emissions have no carbon monoxide and oxides of nitrogen.2. Blow by emissions is essentially carbon monoxide and suspended particulate matter.3. Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.4. There are no suspended particulates in the exhaust.Of these statements are correcta)1 and 4b)1 and 3c)2 and 3d)1, 2, 3, and 4Correct 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 With respect to I.C. engine emissions, consider the following statements:1. Evaporative emissions have no carbon monoxide and oxides of nitrogen.2. Blow by emissions is essentially carbon monoxide and suspended particulate matter.3. Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.4. There are no suspended particulates in the exhaust.Of these statements are correcta)1 and 4b)1 and 3c)2 and 3d)1, 2, 3, and 4Correct 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 With respect to I.C. engine emissions, consider the following statements:1. Evaporative emissions have no carbon monoxide and oxides of nitrogen.2. Blow by emissions is essentially carbon monoxide and suspended particulate matter.3. Exhaust emissions contain 100% of carbon monoxide, 100% of oxides of nitrogen and around 50-55% of hydrocarbons emitted by the engine.4. There are no suspended particulates in the exhaust.Of these statements are correcta)1 and 4b)1 and 3c)2 and 3d)1, 2, 3, and 4Correct answer is option 'C'. Can you explain this answer?.
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