Buffer Solutions and pH Quiz

What is total acidity measured by?

• A) pH meter

• B) Titration with a base

• C) Conductivity meter

• D) Spectrophotometer

What does a lower pH value in food generally indicate?

• A) Higher alkalinity

• B) Higher acidity

• C) Higher sugar content

• D) Higher salt content

Which acid is used for making cola drinks?

• A) Citric acid

• B) Acetic acid

• C) Phosphoric acid

• D) Tartaric acid

Which type of acid is found in apples and tomatoes?

• A) Citric acid

• B) Acetic acid

• C) Malic acid

• D) Tartaric acid

Which type of acid is citric acid considered?

• A) Organic acid

• B) Inorganic acid

• C) Strong acid

• D) Weak acid

Which of the following acids is commonly used in the pickling industry?

• A) Citric acid

• B) Acetic acid

• C) Lactic acid

• D) Phosphoric acid

Which of the following acids is not highly soluble and has limited applications in the food industry?

• A) Citric acid

• B) Acetic acid

• C) Fumaric acid

• D) Lactic acid

Which food product requires a specific pH range to properly gel?

• A) Bread

• B) Jam

• C) Milk

• D) Cheese

What is the role of buffers in food quality control?

• A) They enhance the flavor of food

• B) They prevent significant changes in pH

• C) They increase the acidity of food

• D) They reduce microbial growth

What is a buffer solution?

• A) A solution that changes pH drastically when acids or bases are added

• B) A solution containing a strong acid and a strong base

• C) A solution containing appreciable amounts of a weak conjugate acid-base pair

• D) A solution that cannot resist changes in pH