Question

select the correct answer. what process involves heating milk to kill all harmful bacteria without affecting the nutritional value? a. boiling b. contamination c. pasteurization d. refrigeration

Explanation:

• Option A: Boiling milk (at 100°C) can destroy nutrients and over - heat the milk, so it's not the right process.
• Option B: Contamination is the introduction of harmful substances or organisms, not a process to kill bacteria in milk while preserving nutrition.
• Option C: Pasteurization is a process where milk is heated to a specific temperature (usually around 60 - 70°C for a short time) to kill harmful bacteria while minimizing the impact on its nutritional value.
• Option D: Refrigeration is used to slow down the growth of bacteria, not to kill them, and it doesn't involve heating.

Answer:

C. pasteurization