CBSE Class 8 Social Science Chapter 5 Industries NCERT Solutions

(i) An industry refers to an economic activity that involves the production of goods, the extraction of minerals, or the provision of services. It encompasses all activities related to transforming raw materials into finished products or offering specialized services.

(ii) Several key factors influence the location of an industry. These include the availability of essential resources like raw materials, land, and water. Additionally, factors such as the availability of labor, power supply, capital for investment, efficient transport networks, and proximity to markets where the products can be sold are crucial.

(iii) The iron and steel industry is widely recognized as the backbone of modern industry. This is because it produces iron and steel, which are fundamental raw materials used in the manufacturing processes of numerous other industries, such as machinery, construction, automobiles, and defense equipment.

(iv) The cotton textile industry experienced rapid expansion in Mumbai due to a combination of favorable conditions. Initially, the region offered a warm and moist climate suitable for cotton processing. The presence of a well-developed port facilitated the import of necessary machinery and the export of finished goods. Furthermore, the easy availability of raw cotton and a skilled labor force contributed significantly to its growth.

(v) The information technology (IT) industry in Bangalore shares several similarities with Silicon Valley in California:

(a) Educational and Technological Hubs: Both locations are home to a large number of reputable educational institutions and colleges specializing in science and technology. Bangalore has many IT colleges, while Silicon Valley is situated near world-renowned scientific and technological centers.

(b) Environment: Both Bangalore and Silicon Valley are known for their relatively low pollution levels and clean environments, which are conducive to the IT sector's workforce and operations.

(i) The correct option is (b) California. Silicon Valley is a well-known technology hub located in the northern part of California, USA.

(ii) The correct option is (c) Information Technology. Sunrise industries, characterized by rapid growth and innovation, often include sectors like IT, biotechnology, and renewable energy.

(iii) The correct option is (b) jute. Jute is a natural fiber obtained from plants. Nylon and acrylic are synthetic fibers produced through chemical processes.

(i) The distinction between agro-based and mineral-based industries is based on their raw materials:

• Agro-based Industry: These industries utilize plant and animal-based products as their raw materials. Examples include the leather industry (using animal skin) and the food processing industry (using crops).
• Mineral-based Industry: These industries use mineral ores as their primary raw materials. Examples include the iron and steel industry, which uses iron ore, and industries that use limestone.

(ii) The distinction between public sector and joint sector industries lies in their ownership and operation:

• Public Sector Industry: These industries are owned and operated by the government. Examples include government-owned enterprises like Maruti Udyog (historically).
• Joint Sector Industry: These industries are owned and operated jointly by the government (state) and private individuals or companies. An example is Hindustan Aeronautics Limited (HAL), which operates under joint ownership.

(i) Raw materials: Ores (like iron ore, bauxite) and plants (like cotton, sugarcane).

(ii) End products: Clothes that we wear (from cotton) and a car (made from steel and other components).

(iii) Tertiary activities: These are service-oriented activities. Examples include trade (buying and selling goods) and banking (financial services).

(iv) Agro-based industries: Industries that use agricultural products as raw materials. Examples are the food processing industry (using fruits, vegetables, grains) and the leather industry (using animal hides).

(v) Cottage industries: Small-scale industries often run at home by artisans. Examples include basket weaving and pottery making.

(vi) Co-operatives: These are organizations owned and run by a group of people for their mutual benefit. Examples include AMUL (Anand Milk Union Limited) and Sudha Dairy, which are dairy cooperatives.

(i) The correct option is (b) Secondary. Manufacturing involves transforming raw materials into finished goods, which is a characteristic of secondary economic activities.

(ii) The correct option is (c) Iron and steel industry. The iron and steel industry is fundamental because it supplies essential materials like iron and steel, which are used as inputs for a vast range of other industries.

(iii) The correct option is (c) Public sector. Historically, Maruti Udyog was a public sector undertaking, meaning it was owned and operated by the Indian government.

(iv) The correct option is (d) All of these. The location of an industry is influenced by a combination of factors, including the availability of power, raw materials, and efficient transport systems, among others.

(v) The correct option is (a) Smelting. In a blast furnace, iron ore undergoes smelting, a process of applying heat to reduce metal ores into their pure form, separating the metal from its ore.