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Questions and Answers

Which elements in a fuel combine with oxygen during combustion to form carbon dioxide and water vapor?

Carbon and hydrogen (correct)

Carbon and sulfur

Hydrogen and nitrogen

Oxygen and nitrogen

What is the main purpose of combustion?

To produce useful heat energy (correct)

To form sulfur compounds

To create toxic gases

To combine with nitrogen

What is perfect combustion also known as?

Spontaneous combustion

Incomplete combustion

Exothermic combustion

Stoichiometric combustion (correct)

Which element is involved in the incomplete combustion of sulfur?

Oxygen Signup and view all the answers

What is the equation for the formation of sulfur dioxide?

2S + O2 -> SO2 Signup and view all the answers

Why is the formation of free sulfur undesirable?

It represents a waste of fuel Signup and view all the answers

Which of the following conditions is required for complete combustion to occur?

Sufficient air must be admitted to ensure all combustibles are burned. Signup and view all the answers

What is the equation for the complete combustion of carbon?

$C + O_2 \rightarrow CO_2$ Signup and view all the answers

What is the equation for the incomplete combustion of hydrogen?

$2H_2 + O_2 \rightarrow H_2O + H_2$ Signup and view all the answers

What are the products of incomplete combustion?

$CO_2, SO_2, H_2O, N_2, CO, CH_4$ Signup and view all the answers