Quiz on Acids, Bases, and Salts IGCSE

What is the pH of a neutral solution?

• 0

• 14

• 7

• 3

Which acid is commonly found in vinegar?

• Nitric acid

• Acetic acid

• Hydrochloric acid

• Sulfuric acid

What color does litmus paper turn in an acidic solution?

• Blue

• Green

• Red

• Yellow

Which of the following is a strong alkali?

• Sodium hydroxide

• Calcium carbonate

• Ammonium hydroxide

• Copper sulfate

What gas is produced when an acid reacts with a metal carbonate?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon dioxide

Which indicator shows a range of colors depending on pH?

• Litmus

• Methyl orange

• Universal Indicator

• Phenolphthalein

What is the main characteristic of a base?

• Has a pH of 7

• Turns litmus red

• Contains H+ ions

• Turns litmus blue

Which of the following is an organic acid?

• Sulfuric acid

• Nitric acid

• Hydrochloric acid

• Citric acid

What is the result of neutralizing an acid with a base?

• Salt and gas

• Gas and water

• Salt and water

• Only water

Which of the following acids is found in the stomach?

• Nitric acid

• Hydrochloric acid

• Sulfuric acid

• Phosphoric acid