01 · Explore
The Backbone of Economic Development
Manufacturing involves the production of goods in large quantities after processing raw materials into more valuable products. It is considered the backbone of a country's economic strength.
Manufacturing industries fall within the secondary sector of the economy. They play a vital role in modernising agriculture, which is the primary sector, by providing tools and machinery. Furthermore, they reduce the heavy dependence of the population on agricultural income by creating jobs in the secondary and tertiary sectors.
Industrial development is a essential for eradicating unemployment and poverty. In India, this philosophy led to the establishment of public sector industries and joint sector ventures, particularly in tribal and backward areas to reduce regional disparities.
The export of manufactured goods expands trade and commerce, bringing in valuable foreign exchange. Countries that can transform their raw materials into a wide variety of high-value finished goods are generally more prosperous.
The Manufacturing Value Chain
- 1
Raw Materials
Primary products like wood, sugarcane, iron ore, or bauxite.
- 2
Processing
Industrial activity using machines and labor to transform materials.
- 3
Finished Goods
Higher value products like paper, sugar, steel, or aluminium.
The process of manufacturing adds value to raw materials at each stage of production.
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02 · Explore
Classification of Industries
Industries are classified based on various criteria such as raw materials, their main role, capital investment, ownership, and the weight of materials.
On the basis of raw materials, industries are divided into Agro-based (e.g., cotton, sugar, tea) and Mineral-based (e.g., iron and steel, cement). According to their role, Basic or Key industries supply products as raw materials for other goods (e.g., copper smelting), while Consumer industries produce goods for direct use (e.g., toothpaste, fans).
Capital investment defines Small Scale industries, illustrated in this textbook edition by an investment limit of one crore rupees; official classifications change over time. Ownership categories include Public sector (government-owned like BHEL, SAIL), Private sector (owned by individuals like TISCO, Bajaj Auto), Joint sector (run by both, like Oil India Ltd.), and Cooperative sector (owned by producers/workers, like the sugar industry in Maharashtra).
Finally, industries are classified by the bulk and weight of raw materials and finished goods into Heavy industries (iron and steel) and Light industries (electrical goods).
| Criterion | Category | Examples |
|---|---|---|
| Raw Material | Agro-based | Cotton, Jute, Silk, Sugar |
| Ownership | Public Sector | BHEL, SAIL |
| Main Role | Basic Industry | Iron and Steel, Aluminium Smelting |
| Investment | Small Scale | Units with investment up to 1 Crore |
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03 · Explore
The Textile and Cotton Industry
The textile industry is unique in India as it is self-reliant and complete in the value chain, from raw material to the highest value-added products.
Historically, Indian cotton textiles were made using hand spinning and handloom techniques. The first successful textile mill was established in Mumbai in 1854. During the colonial period, the industry grew because the World Wars created a high demand for cloth in the UK.
Initially, the industry was concentrated in the cotton-growing belts of Maharashtra and Gujarat due to the availability of raw cotton, moist climate, and proximity to ports. Today, while spinning remains centralized in these states, weaving is highly decentralized to incorporate traditional skills like zari and embroidery.
The industry supports many others, including chemicals, dyes, and packaging. However, a major challenge is that while India has world-class production in spinning, the weaving sector often produces low-quality fabric that cannot use all the high-quality yarn produced in the country.
Textile Value Addition
- 1
Fiber Production
Raw fiber is harvested.
- 2
Spinning
Fiber is converted into yarn.
- 3
Weaving/Knitting
Yarn is turned into fabric.
- 4
Dyeing/Finishing
Fabric is processed and colored.
- 5
Garment Manufacture
Finished clothing is produced.
The textile industry adds value at every stage from raw fiber to finished garments.
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04 · Explore
Jute and Sugar Industries
India is a leading producer of jute and sugar, both of which are critical agro-based industries with specific geographical concentrations.
India is the largest producer of raw jute and stands second as an exporter after Bangladesh. Most jute mills are located in West Bengal along the Hugli river. This is due to the proximity of jute-growing areas, inexpensive water transport, and abundant water for processing. The first jute mill was set up at Rishra near Kolkata in 1855.
In the sugar industry, India stands second globally in sugar production but first in the production of gur and khandsari. The industry is seasonal and ideally suited for the cooperative sector. Most mills are in Uttar Pradesh and Bihar, but there is a recent shift toward southern and western states like Maharashtra.
The shift to the south is driven by the higher sucrose content in the cane grown there and a cooler climate that allows for a longer crushing season. Additionally, cooperatives have been more successful in these regions.
Partition in 1947 separated many jute mills, which remained in India, from much of the jute-growing area, which became part of East Pakistan (now Bangladesh). This illustrates how political boundaries can change an industry’s supply links.
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05 · Explore
Iron and Steel: The Basic Industry
The iron and steel industry is the foundation of all other industries because they depend on it for machinery and construction.
Steel is essential for engineering, defense, medical equipment, and consumer goods. Its production and consumption are often used as an index of a country's development. It is a heavy industry because the raw materials (iron ore, coking coal, and limestone) and finished products are bulky and heavy.
The ideal ratio for raw materials in steel production is approximately 4 parts iron ore, 2 parts coking coal, and 1 part limestone. Manganese is also added to harden the steel. Most iron and steel industries are concentrated in the Chhotanagpur plateau region.
The Chhotanagpur region offers advantages like low-cost iron ore, high-grade raw materials in close proximity, cheap labor, and a vast growth potential in the domestic market.
| Raw Material | Required Ratio | Purpose |
|---|---|---|
| Iron Ore | 4 | Primary metal source |
| Coking Coal | 2 | Fuel and reducing agent |
| Limestone | 1 | Fluxing agent |
| Manganese | Small quantity | Hardening the steel |
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