Why is it necessary to keep raw and cooked food separate while preparing food?

Correct answer: To prevent cross-contamination by harmful microorganisms

Raw meat, eggs, fish, or unwashed vegetables may carry harmful microorganisms. If their juices, knives, cutting boards, or hands come into contact with cooked food, the microorganisms can transfer to it; this is called cross-contamination. Food is not kept separate to change its taste or reduce its cost. Exam tip: Remember to use separate utensils, knives, and cutting boards for raw and cooked foods.