1.
The four elements that must be present for fire to exist include heat, oxygen, fuel, and a chemical reaction between all three.
Correct Answer
A. True
Explanation
Fire requires four elements to exist: heat, oxygen, fuel, and a chemical reaction between all three. Without any one of these elements, fire cannot be sustained. Heat provides the initial energy to start the fire, oxygen supports the combustion process, fuel serves as the material that is being burned, and the chemical reaction between these three elements produces the fire. Therefore, all four elements must be present for fire to exist.
2.
The concept of fire prevention is to keep the above elements separate.
Correct Answer
A. True
Explanation
The concept of fire prevention involves keeping the elements that can cause fire, such as fuel, oxygen, and heat, separate from each other. By ensuring that these elements do not come into contact, the risk of fire can be minimized. This can be achieved through various measures such as proper storage and handling of flammable materials, maintaining proper ventilation systems, and practicing safe electrical usage. Therefore, the statement "The concept of fire prevention is to keep the above elements separate" is true.
3.
There are four classes of fire, Class A, B, C, and K.
Correct Answer
B. False
Explanation
The statement is false because there are actually five classes of fire, not four. The correct classes of fire are Class A, B, C, D, and K. Class D fires involve combustible metals, while Class K fires involve cooking oils and fats.
4.
Class B Fires are those fires that occur involving paper and wood.
Correct Answer
B. False
Explanation
Class B fires are not those fires that occur involving paper and wood. Class B fires involve flammable liquids such as gasoline, oil, and grease. Paper and wood are typically involved in Class A fires. Therefore, the given statement is false.
5.
Multipurpose dry chemical extinguishers are effective in all cases except D and K fires.
Correct Answer
A. True
Explanation
Multipurpose dry chemical extinguishers are designed to be effective in combating a wide range of fires, including those caused by Class A, B, and C materials. Class D fires involve combustible metals, such as magnesium or sodium, which require specialized extinguishing agents. Class K fires, on the other hand, involve cooking oils and fats, which can reignite even after being extinguished by dry chemical agents. Therefore, multipurpose dry chemical extinguishers are not effective in extinguishing Class D and K fires.
6.
To remember the rules of fighting fires, just remember the three A's: Activate, Assist, and Attempt.
Correct Answer
A. True
Explanation
The given statement suggests that to remember the rules of fighting fires, one should remember the three A's: Activate, Assist, and Attempt. This implies that these three actions are important steps to take when dealing with a fire incident. Therefore, the statement is true as it provides a mnemonic device to remember the firefighting rules.
7.
The four simple steps for operating a fire extinguisher can be remembered with the word PASS. Pull, Activate, Squeeze, Sweep.
Correct Answer
B. False
Explanation
The given statement is false. The correct answer is True. The four simple steps for operating a fire extinguisher can be remembered with the word PASS: Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep from side to side.
8.
After the fire has been extinguished, it is important to watch the site for re-ignition.
Correct Answer
A. True
Explanation
After a fire has been extinguished, there is still a possibility of re-ignition. This can occur due to remaining embers or hot spots that were not completely extinguished during the initial firefighting efforts. Monitoring the site after the fire has been put out allows for the detection and prompt response to any re-ignition, preventing the fire from spreading again and causing further damage or danger. Therefore, it is indeed important to watch the site for re-ignition after a fire has been extinguished.
9.
Fire extinguishers must be inspected or checked every 60 days according to regulations.
Correct Answer
B. False
Explanation
Fire extinguishers must be inspected or checked every 60 days according to regulations. This statement is false. According to regulations, fire extinguishers must be inspected or checked on a more frequent basis, typically monthly or quarterly. Regular inspections are necessary to ensure that fire extinguishers are in proper working condition and ready to be used in case of an emergency.
10.
According to local, state, and national codes and regulations, fire extinguishers must be maintained bi-annually.
Correct Answer
B. False
Explanation
Fire extinguishers must be maintained annually, not bi-annually, according to local, state, and national codes and regulations. This means that they need to be inspected and serviced once every year to ensure their proper functioning and to comply with safety standards. Bi-annual maintenance would mean that the fire extinguishers are only checked every two years, which would not be sufficient to ensure their effectiveness in case of a fire emergency. Therefore, the statement is false.