Hazard Symbols and pH Scale Quiz

Which hazard symbol is used to indicate a substance that is corrosive and can damage skin or eyes?

• Flame

• Exclamation mark

• Corrosion (test tube pouring onto hand and metal)

• Skull and crossbones

What does the hazard symbol with a flame over a circle represent?

• Flammable

• Explosive

• Oxidising

• Toxic

On the pH scale, what number represents a neutral solution?

• 0

• 7

• 14

• 1

Which colour does universal indicator turn in a strongly acidic solution (pH 1-2)?

• Red

• Green

• Blue

• Purple

What is the pH range for alkaline (basic) solutions?

• 0–6

• 7

• 8–14

• 1–5

Which hazard symbol should you look for on a bottle containing a poisonous chemical?

• Skull and crossbones

• Gas cylinder

• Flame

• Exclamation mark

What colour does universal indicator turn in a neutral solution?

• Red

• Yellow

• Green

• Blue

Which of the following pH values indicates a strongly alkaline solution?

• 2

• 5

• 7

• 13

What does the exclamation mark hazard symbol mean?

• Harmful/Irritant

• Flammable

• Corrosive

• Explosive

What colour does universal indicator turn in a strongly alkaline solution (pH 12-14)?

• Red

• Orange

• Blue

• Purple