Free OFAI Situational and Technical Knowledge Questions and Answers

Question 1

Which of the following liquids has the highest explosive range?

Accepted Answer

Ethanol

Answer

Gasoline

Answer

Acetone

Answer

Kerosene

Question 2

Which of the following liquids had the lowest vapor density?

Accepted Answer

Ethanol

Answer

Gasoline

Answer

Acetone

Answer

Kerosene

Question 3

Which of the following liquids has the highest specific gravity?

Accepted Answer

Kerosene

Answer

Gasoline

Answer

Acetone

Answer

Ethanol

Question 4

Which of the following descriptions is correct?

Accepted Answer

Class B Fires - Flammable liquids, gases

Answer

Class A Fires - Electrical

Answer

Class C Fires - Combustible metals

Answer

Class D Fires - Ordinary Combustibles

Question 5

Fires which involve such metals as sodium, magnesium, titanium, aluminum, and uranium are classified as _____________ fires.

Accepted Answer

Class D

Answer

Class A

Answer

Class B

Answer

Class C

Question 6

You are using a full SCBA bottle containing 140 cubic feet of air. Your supervisor has informed you that a bell will sound when the tank is 1/4 full. When you hear the bell sound, you can assume that your tank has ____________ cubic feet of air remaining.

Accepted Answer

35.0

Answer

25.0

Answer

28.5

Answer

45.5

Question 7

Which one of the following hose diameters is the largest?

Accepted Answer

17/20 inches

Answer

3/4 inches

Answer

3/5 inches

Answer

8/10 inches

Question 8

John is a firefighter at a station having dinner with his crew. He overhears a more senior firefighter saying very negative things about the department's newly hired Fire Chief. John knows the senior firefighter hasn't even met the new Fire Chief yet and is basing his statements on rumors he's heard from his neighbors. John has known the Fire Chief for several years and knows these rumors aren't true. What is the best way for Firefighter John to handle this situation?

Accepted Answer

John should talk to the senior firefighter privately about the rumors and tell him that they could be damaging to the Fire Chief.

Answer

John should share whatever accurate information he has about the Fire Chief with the crew members at the dinner table.

Answer

John should tell the other crew members that the rumors aren't true and when the senior firefighters isn't around.

Answer

John should tell the Fire Chief about the rumors the senior firefighter was spreading.

Question 9

You are on duty with your crew and your engine pulls into a fast food restaurant parking lot to quickly buy lunch. While you walk up to the front door of the restaurant, you are approached by a citizen who complains that there are two of your children left in a vehicle without a parent or guardian in sight. You approach the vehicle and see that the children appear to be between 10 and 13 years of age and appear to be fine. It's a cloudy day, and the outside temperature is 65 degrees. How would you handle this situation?

Accepted Answer

Have your crew members pick up your food and stay close to the vehicle until a parent or guardian returns.

Answer

Enter the restaurant and have the workers announce that there are children in a vehicle who need assistance.

Answer

Remind the citizen that you and your crew need to quickly purchase your food and get back into service and that you cannot assist.

Answer

Remove the children from the vehicle and immediately assess their health.

Question 10

You are off-duty helping a fellow firefighter work on a side job. He works as a part-time construction worker to bring in extra money for his family. You're on the job site with another 10 workers and you accidentally drop your hammer on the tile floor while walking through the newly remodeled bathroom. you discover that your hammer cracked the tile. You look around and discover that nobody else saw the accident. How would you handle this situation?

Accepted Answer

Find your friend and inform him about what happened and offer to pay for the damage.

Answer

Try to repair the broken tile, even though you don't have experience in this area.

Answer

Tell your friend that you noticed that the tile was cracked when you walked into the bathroom.

Answer

Wait until the remodeling project is finished to say anything as it's likely that there will be more damage in the coming days.