NCERT Class 12 Home Science Human Ecology and Family Sciences Part I: Chapter 4 — Food Processing And Technology 4
This chapter introduces Food Processing and Technology, exploring its history, development, and current status. It explains the significance and basic concepts of food processing, highlighting its evolution from traditional methods like drying grains and making pickles to modern techniques meeting diverse consumer demands for 'fresh', 'organic', and 'safer' foods. The chapter discusses the Indian food industry's growth, the role of food fortification in addressing nutrient deficiencies (e.g., iodised salt, fortified flour), and how technology alters food composition to reduce calories or fat while maintaining texture. It also touches upon the increasing consumer demand for chemical-free, preservative-free foods with longer shelf life and natural flavors, underscoring the growing importance of food technologists and career opportunities in the field, including self-employment.
Quick info
| Board | CBSE / NCERT |
|---|---|
| Class | Class 12 |
| Subject | Home Science |
| Book | Human Ecology and Family Sciences Part I |
| Chapter | Chapter 4 — Food Processing And Technology 4 |
| Language | English |
| PDF type | NCERT Textbook |
| Session | CBSE 2026 |
| Reading time | 3 minutes |
| Word count | 591 |
Learning outcomes
- Understand the definition, history, development, and current status of food processing and technology.
- Explain the significance and basic concepts of food processing.
- Identify the skills required for a professional food technologist.
- Be aware of career opportunities and educational qualifications in the food industry.
- Recognize the scope for self-employment in food processing.
Vocabulary
| Word | Meaning |
|---|---|
| Shelf life | The length of time for which a commodity may be stored without becoming unfit for use, consumption, or sale. |
| Digestibility | The ease with which food can be digested. |
| Palatability | The degree to which food is pleasant to taste. |
| Industrialisation | The development of industries in a country or region on a wide scale. |
| Agro-surplus | A situation where agricultural production exceeds demand. |
| GDP | Gross Domestic Product, the total value of goods and services produced in a country in a given year. |
| Globalisation | The process by which businesses or other organizations develop international influence or start operating on an international scale. |
| Fortification | The process of adding micronutrients to food to improve its nutritional value. |
| Nutrient | A substance that provides nourishment essential for growth and the maintenance of life. |
| Artificial sweeteners | Substances used instead of sugar to sweeten foods and drinks, often with fewer calories. |
The complete chapter text is read in the official NCERT PDF viewer below (streamed from ncert.nic.in). This page provides NCERT Help study material — summary, vocabulary, practice questions, and FAQs — not a full reproduction of the textbook.
Read chapter online
This PDF is loaded from the official NCERT website (ncert.nic.in). Use the page buttons below to read — download is disabled on NCERT Help.
Read page by page below. PDF is streamed from the official NCERT website — no download button on this page.
Practice questions
- What are some traditional methods of food processing mentioned in the chapter? Answer: Drying grains after harvest, making pickles, murabbas, and papads.
- Why is food processing important for India? Answer: India has progressed to an agro-surplus country, creating a need for storage and processing of agricultural produce, and the food industry contributes significantly to the GDP.
- What is food fortification and why is it done? Answer: Food fortification is adding nutrients that are lacking in food to ensure minimum dietary requirements are met, helping to prevent deficiency disorders.
- Give examples of fortified foods mentioned in the chapter. Answer: Iodised salt, folic acid added to flour, vitamin A and D added to milk and oils/fats.
- What are some consumer demands that stimulate scientists to develop new food processing methods? Answer: Consumers demand 'fresh' and 'organic' foods, 'safer and healthier' foods, foods with adequate shelf life, retention of nutrients, specific functional properties, and desired taste/texture/consistency.
Practice MCQs
Q1. Which of the following is a traditional Indian preserved product mentioned?
Explanation: Papads are mentioned as examples of preserved products made from certain vegetables/fruits/grains in India.
Q2. The Indian food industry ranks fifth in terms of size and contributes nearly what percentage of GDP?
Explanation: The text states that the Indian food industry ranks fifth in size, contributing nearly 6 per cent of GDP.
Q3. Food fortification is done to:
Explanation: Food fortification is done by adding nutrients that are lacking in foodstuffs to ensure that minimum dietary requirements are met.
Q4. Which of the following is NOT a reason for processing food mentioned in the introduction?
Explanation: The chapter lists improving digestibility, palatability, and ensuring a continuous supply as reasons for food processing, not increasing cost.
Q5. FSSAI has laid down standards for fortification of staple foods like:
Explanation: The text explicitly mentions that FSSAI has laid down standards for fortification of staple food like salt, wheat flour, milk and oats.
Q6. What is an example of altering nutrient content to reduce calorie content?
Explanation: The chapter mentions using artificial sweeteners as a way to reduce the calorie content of processed foods.
Frequently asked questions
What is food processing?
Food processing involves transforming raw food materials into finished food products through various methods to improve digestibility, palatability, shelf life, and meet consumer demands.
Why has the demand for processed foods increased?
Increased industrialisation, changes in lifestyle, greater mobility, and globalisation have led to diverse consumer needs, including demand for convenient, safer, healthier, and shelf-stable foods.
What is the significance of the Indian food industry?
India has become an agro-surplus country, and its food industry is a major producer of processed foods, ranking fifth in size and contributing significantly to the GDP.
What is food fortification?
Food fortification is the process of adding essential nutrients that may be lacking in certain food items to improve their nutritional value and prevent deficiency disorders.
What are some examples of fortified foods in India?
Examples include iodised salt, wheat flour fortified with folic acid, and milk and oils fortified with vitamins A and D.
What are the career prospects in food processing?
There are significant career opportunities for food technologists in the industry, as well as scope for self-employment in small, medium, or large-scale food processing ventures.
Related resources
Important topics
Topics covered
NCERT Class 12 Home Science — Human Ecology and Family Sciences Part I — Chapter 4 — Food Processing And Technology 4. Verified by NCERT Help Editorial Team. Reviewed on 29 Jul 2026. Last updated 10 Aug 2026.