Q 01/05

If your clothing catches fire, what three-step technique are children taught?

A) Stop, look and listen

B) Duck, cover and hold

C) Stop, drop and roll

D) Kneel, breathe and wait

Answer · why

C) Stop, drop and roll

Stop, drop and roll has a step the slogan leaves out: once on the ground you cover your face with your hands, then roll over and over until the flames...

Q 02/05

The fire triangle shows a fire needs heat, fuel and what third element?

A) Oxygen

B) Smoke

C) Wind

D) Hydrogen

Answer · why

A) Oxygen

Oxygen is the side a fire blanket removes: laid over a small blaze it starves the flames of air, and with any one side of the triangle gone the fire g...

Q 03/05

Fires involving ordinary solids such as paper and wood fall into which category?

A) Class B

B) Class C

C) Class K

D) Class A

Answer · why

D) Class A

Class A fires are the ones water suits best, soaking in and cooling the fuel, which is why the number before the A on a US extinguisher label counts w...

Q 04/05

Which consumer advocate's 1965 book Unsafe at Any Speed accused carmakers of resisting safer designs?

A) Rachel Carson

B) Ralph Nader

C) Jane Jacobs

D) Vance Packard

Answer · why

B) Ralph Nader

Ralph Nader's book rattled General Motors into hiring private detectives to dig into his life; its president ended up apologising to a Senate subcommi...

Q 05/05

Household smoke detectors sense smoke either optically or by which other process?

A) Ultrasound

B) Ionization

C) Infrared imaging

D) Chemical sniffing

Answer · why

B) Ionization

Ionization alarms carry a speck of radioactive americium-241 that keeps a tiny current flowing through the air inside; smoke breaks that flow and sets...