Oil forms a protective layer over pickles, preventing air from reaching them. Without air, microbes cannot grow, so the pickles stay fresh, safe and tasty for months.
Class 5 Environmental Studies Grade 5 Chapter 3 The Mystery of Food solutions
CBSE Class 5 EVS Unit 2: Health and Well-being Chapter 3 The Mystery of Food Question Answer
Oil is added to pickles to create a protective barrier that stops air from reaching the food. Microbes need air to survive, so without it, they cannot grow. This method keeps pickles fresh and safe for months, while the oil also adds flavour and helps maintain the taste of the preserved ingredients.
For more NCERT Solutions for Class 5 EVS Our Wondrous World – The World Around Us Unit 2: Health and Well-being – Chapter 3: The Mystery of Food Extra Questions & Answer:
https://www.tiwariacademy.com/class-5-evs-our-wondrous-world-chapter-3/#solutions