Revision Unit 4

In case of any type of fire, it is best to use a ______ fire extinguisher. 

• Powder based

• Water based

• Foam based

• Wet chemical based

 

Water based fire extinguisher is best used on ______?

• Electrical fire

• Flammable fuels' fire

• Fuels like wood, paper, or fabric

• None of the above

Incorrect posture while working on computer is a hazard of?

• Risk of muscles pain

• Risk of respiratory infections

• Risk of stress

• Risk of mental disorder

Fire doors and escape routes must be clear for evacuation emergency.

• False

• True

Which one of the below can be considered as "hazard"?

• working with chemicals

• sitting for too long

• wet floor

• All are correct

Ahmed is an electrical technician . He has to change light bulbs . The light bulbs are in decorative sconces 13 meter above the floor. Which ladder should he use?

• A 3-meter aluminum ladder

• A 7-meter wood ladder

• A 9-meter aluminum ladder

• A 15- meter wood ladder

Mona is vacuuming the meeting rooms. She inspects the cords for damaged wires and loose plugs and finds everything in good condition. She begins vacuuming at the back of the meeting room and works her way toward the door. Then she crosses the hallway into the next meeting room and keeps vacuuming. When she is done, she unplugs the cord and rolls it up. What, if anything, did Mona do wrong?

• She didn’t turn light off

• She ran the cord across the center of the hallway.

• She didn’t use an extension cord.

• She didn’t do anything wrong.

Screwdrivers may be used for purposes other than removing screws, such as opening can lids.

• True

• False

What do you do if the tool breaks while you are using it?

• Throw it away

• Tell the supervisor

• Put it down and walk away

• Hand it to another co-worker

Chainsaws are dangerous because:

• They are noisy

• They are heavy to use

• There is no guard on the cutting chain

• All of the answers are correct