Title 6 MANUFACTURING INDUCTRIES & WASTE MANAGEMENT_15638773.pdf ✅

Page number 2 Click To Subscribe PHYSICS BRO YT CHANNEL Click To download APP – – 2 Mark Questions 1. Give two ways in which petro-chemical industry is important for India? Semester-II 2022 Or Mention two reasons for the development of the petro-chemical industry in India. 2010 Ans The two major reasons for the development of the petro-chemical industry in India are as follows: (i) Raw material is easily available. (ii) Cheaper products are produced on a large scale. 2. Why is there a need for waste management in large metropolitan cities? Semester-Il 2022 Ans There is a need for waste management in large metropolitan cities because: • Improperly stored waste can cause health, safety and economic problems in metropolitan areas where people come to live in a clean environment. • Transmission of diseases due accumulation of wastes is a major threat to people and environment in big cities. 3. Why is composting considered a safe method of waste disposal? Semester-Il 2022 Ans Composting is considered a safe method of waste disposal because it is a natural degradation process in which biodegradable materials are decomposed by microbes and converted into manure. Composting offers a method of processing and recycling both garbage and sewa ge sludge in one operation. It recycles the nutrients and returns them to the soil as nutrients. 4. Differentiate between mineral-based industry and agro-based industry giving one example for each. 2017 Or With the help of an example, explain how agro based industry is different from mineral-based industry. 2003 Ans The difference between agro-based industries and mineral-based industries are: (i) Agro-based industries get raw materials from agriculture but mineral-based industries derive their raw material from minerals. (ii) Agro-based industries provide employment in rural areas but mineral-based industries provide employment both in rural and urban areas. (iii) Agro-based industries mostly produce consumer goods. e.g, sugar, jute, textile etc. Mineral-based industries produce both consumer and value based goods, e.g., Iron and steel, engineering industry, ship building machine tools etc. 5. Give two reasons as to why Mumbai has developed into an important cotton textile centre. 2020 Or Why has Mumbai a large number of cotton textile units? 2002 Ans The factors that favour the concentration of cotton textile mills in Mumbai are

Page number 2 Click To Subscribe PHYSICS BRO YT CHANNEL Click To download APP – 13. Though Uttar Pradesh has the largest number of sugar mills yet Maharashtra is the largest producer of sugar.' Give any two reasons to justify the statement. 2017 Or Mention two reasons why the sugar industry has grown in Maharashtra? 2018 Ans Due to following reasons Maharashtra is the largest producer of sugar: (i) Sugar mills in Maharashtra are managed by cooperatives which are more efficient in production of sugar. (ii) The soil, higher temperature, good amount of rainfall or irrigation and frost-free growing season are best-suited geographical condition which are found in Maharashtra. So sugarcane has high sucrose content. 14. The iron and steel industry constitutes the backbone of modern industrial economy.' Give two reasons to justify the statement. 2017 Ans The iron and steel industry constitutes the back bone of modern industrial economy because of following reason (i) Most of the important industries such as automobile, locomotives, rail tracks, shipbuilding, machine and tools and manufacture of defence equipment depend on iron and steel industry. (ii) The production and consumption of iron and steel is one of the most significant measures of the level growth of a country. 15. (i) Name an iron and steel Industry set up in Odisha with the help of a famous German firm. 2017 (ii) From where does the industry named in (i) get its iron ore and manganese? Ans (i) The Rourkela steel plant was set up in Odisha with collaboration of the West German firm Krupps and Demag during the Second Five Year Plan. It started its production in 1959. (ii) This iron and steel industry gets its iron ore from Sundargarh and Keonjhar district of Odisha and Manganese from Barajmda of Jharkhand. 16. Name two products each of the following industries. 2017 (i) petrochemical industry (ii) electronic industry Ans (i) Two products of petrochemical industry are polythene, PVC of plastic group, nylon & synthetic fibre. (ii) Two products of electronic industry are personal computers and digital cameras. 17. Mention two advantages that a mini steel plant has over an integrated iron and steel plant. 2016 Ans The two advantages of mini steel plant over an integrated iron and steel plant are: (i) This industry uses an electric arc furnace which conserves coal. (ii) It requires small capital investment. 18. Give a reason for each of the following: 2016 (i) Products made from petrochemicals are growing in popularity. (ii) The electronic industry contributes to the development of the country. Ans (i) Products made from petrochemicals are growing in popularity because they are cheaper and are durable. (ii) The electronic industry contributes to the development of the country because it covers diverse areas such as space exploration, defence equipments, medical diagnosis, communication, information technology etc.