Question

Which of the following is a source of black carbon or soot
1) fire places
2) diesel engines
3) jet engines
4) All of the above

Answer 1

Answer:

hey mate !!!!

your options 4 is correct answer.

plz mark brainliest

Answer 2

Answer

Fire places, diesel engines and  jet engines are the source of black carbon or soot. Thus, all of the above  is the answer.

Explanation

In the following question all the above option is the correct answer because soot or black carbon is manufactured by incomplete combustion of organic substance. In all the above options the common thing is fuel be it wood, petrol or diesel, making them organic substance.

The only way to not produce soot is by burning the fuel at constant and low temperature, which is impossible in these three options as to get optimum performance you need to heat them at higher temperature but not too much therefore, the heat is not constant and not low as well, therefore option (4) is correct.