Question
Question 1 of 1 Which of these combinations could start a fire? Multiple choice.- select more than one answer Oxygen, gas heater, curtains chemical reaction Nitrogen, heater, paper chemical reaction Oxygen, cigarette, paper chemical reaction Oxygen, hot surface, rubbish chemical reaction
Answer
4.3
(221 Votes)
Amber
Expert · Tutor for 3 years
Answer
Oxygen, gas heater, curtains, chemical reaction; Oxygen, cigarette, paper, chemical reaction; Oxygen, hot surface, rubbish, chemical reaction.
Explanation
## Step1: To start a fire, three essential elements must be present: fuel, oxygen, and heat. This is commonly referred to as the "fire triangle."## Step2: Let's analyze each option:Option 1: Oxygen (oxygen), gas heater (heat), curtains (fuel), and chemical reaction. This combination includes all three elements of the fire triangle.Option 2: Nitrogen (not oxygen), heater (heat), paper (fuel), and chemical reaction. This combination lacks the oxygen element.Option 3: Oxygen (oxygen), cigarette (heat), paper (fuel), and chemical reaction. This combination includes all three elements of the fire triangle.Option 4: Oxygen (oxygen), hot surface (heat), rubbish (fuel), and chemical reaction. This combination includes all three elements of the fire triangle.## Step3: Therefore, the combinations that could start a fire are options 1, 3, and 4, as they include all three elements of the fire triangle.