Acids and Alkalis

Which of the following substances contain acid?

• An orange
• Bleach
• Distilled water
• Washing powder

Which of the following substances contain an alkali?

• Baking powder
• Coca cola
• Distilled water
• Vinegar

Which of the following pH numbers indicates a neutral substance?

• 1
• 5
• 7
• 14

Which of the following pH numbers indicates a strong acid?

• 1
• 5
• 7
• 14

Which of the following pH numbers indicate a strong alkali?

• 1
• 5
• 7
• 14

Which of the following acids do we have in our stomach?

• Ethanoic acid
• Hydrochloric acid
• Nitric acid
• Sulphuric acid

What colour is universal indicator in strong acid?

• Green
• Orange
• Purple
• Red

What colour is universal indicator in a neutral solution?

• Green
• Orange
• Purple
• Red

What colour is universal indicator in a strong alkali?

• Green
• Orange
• Purple
• Red

Strong acids and strong alkalis are.......

• Able to turn blue litmus paper red
• Corrosive and/or caustic
• Sour
• Sweet