Acid and Bases

Which of the following substances turns blue litmus paper red?

• Acid

• Base

• Salt

• Neutral

What is the pH value of a neutral substance?

• 0

• 7

• 14

• -7

Which of the following is a characteristic property of acids?

• Sour taste

• Bitter taste

• Slippery feel

• None of the above

What type of solution does a base produce when dissolved in water?

• Acidic

• Basic

• Neutral

• Salty

Which acid is found in lemon juice?

• Hydrochloric acid

• Citric acid

• Sulfuric acid

• Nitric acid

Which base is commonly found in household cleaning products?

• Sodium hydroxide (NaOH)

• Hydrochloric acid (HCl)

• Sulfuric acid (H2SO4)

• Nitric acid (HNO3)

A solution with a pH value of 3 is considered ?

• Acidic

• Basic

• Neutral

• Salty

Which of the following is a strong acid?

• Vinegar (acetic acid)

• Lemon juice (citric acid)

• Hydrochloric acid

• Carbonic acid

Which of the following is a weak base?

• Sodium hydroxide (NaOH)

• Ammonia (NH3)

• Potassium hydroxide (KOH)

• Calcium hydroxide (Ca(OH)2)

A solution with a pH value of 9 is considered?

• Acidic

• Basic

• Salty

• Neutral