Title 6 MANUFACTURING INDUCTRIES & WASTE MANAGEMENT_15638773.pdf ✅

Page number 2 Click To Subscribe PHYSICS BRO YT CHANNEL Click To download APP – • Mumbai has proper network of roads and railways that facilitates easy transportation from mills. • It has proper network of banks that provides credit for setting up of cotton mills. 6. (i) What are Basic Industries? 2020 (ii) Give one example of a Basic Industry in India. Ans (i) Basic industries are those industries which supply their products or raw materials to manufacture other goods. (ii) Iron and steel, copper smelting and aluminium smelting are the examples of basic industries. 7. (i) What do you mean by segregation of waste? 2020 (ii) Why is segregation of waste essential before its disposal? Ans (i) Segregation of waste means dividing the waste into different categories like dry and wet or biodegradable and non-biodegradable. (ii) Segregation of waste is essential before its disposal because it reduces the volume of waste that reaches to the landfills. 8. Why should sewage be treated before disposal? 2020 Ans Sewage should be treated before its disposal because sewage water contains harmful substances. So, when sewage is discharged untreated into the water bodies, it becomes dangerous for aquatic plants and animals. 9. 'Karnataka has developed as an important state for the growth of the Silk industry'. 2019 Ans Factors favouring the silk industry in Karnataka are as follows: • Karnataka has ideal climate conditions for the rearing of silkworms. • Mulberry trees which are suited for rearing silkworms grow well in Karnataka. 10. Mention any two problems faced by the cotton textile industry of India. 2018, 16, 06, 04 Ans The two problems faced by the cotton textile industry of India are: • Textile industry depends on cotton and its cultivation depends on seasons which creates a problem of availability. • Indian textile industry is not as modern as compared to those of developed countries. The technology is also obsolete type. 11. Give two reasons as to why there is a need for safe waste disposal. 2018 Ans There is a need for safe waste disposal because of the following reasons: • It helps to prevent additional pollution which can improve public health. • Waste that is properly disposed off has a lesser chance of getting into the drinking water supply and thus causing illness. 12. How can waste be reused? Explain with help of an example. 2018 Ans The best option to reduce solid waste altogether is to reuse as many items as possible. Reuse can mean purchasing non-disposable items or it can mean passing an item along to another for person confined use. For example, instead of using paper towels to clean the house, one can use a washable rag, and instead of throwing out old clothes or toys pass them to needy people.
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.
Page number 2 Click To Subscribe PHYSICS BRO YT CHANNEL Click To download APP – 19. (i) Mention any two sources of waste. 2016 (ii) What are biodegradable waste? Ans (i) Two source of wastes are Domestic waste (i.e. originated from kitchen, sewage, garbage etc) and Industrial waste (i.e. solid waste (mining), Liquid waste (chemical) etc). (ii) Biodegradable waste are wastes produced by plants and animals, kitchen, paper, green waste etc. These waste can be broken down through microbial activities of fungi and bacteria. 20. (i) Why is the iron and steel industry called a basic industry? 2015 (ii) Define a mini steel plant. Ans (i) The iron and steel industry is called a basic industry because most of the important industries such as automobiles, locomotives, rail tracks, ship building, machine and tools and manufacture of defense equipment depend on iron and steel industry. (ii) A mini steel plant is a decentralised secondary unit. It uses scrap iron which is easily available in the country and is cheap. It does not use heavy capital investment. It does not cause pollution and produces special steel. It can be set up at any convenient place as it does not need huge infrastructure. 21. (i) What is understood by biodegradable waste? 2015 (ii) State one source of gaseous waste. Ans (i) Wastes which can be degraded by microorganisms and by natural processes are known as biodegradable wastes. (ii) One source of gaseous waste is the release of carbon monoxide by automobiles. 22. The Silk Handloom industry is favourable in Mysore, give two reasons. : 2014 Ans The two reasons are as follows (i) Availability of mulberry plant, which is the raw material for this industry. (ii) Availability of Bombyx mori silkworm. 23. Give two reasons for the followings 2014 (i) Kolkata is an important cotton manufacturing centre even though West Bengal is not a leading producer of cotton. Ans (i) Kolkata has varied labour forces, excellent means of transport and easy power availability of coal from Raniganj and hence is an important centre. 24. Name two raw materials used in the petro-chemical industry and state two advantage of petro- chemical products. 2014 Ans Benzene and ethylene are two raw materials used in the petro-chemical industry. Two advantages of petro-chemical products are as follows: (i) They are cheaper. (ii) They are durable. 25. Answer the following questions 2013 (i) What is the significance of the electronics industry in recent times? 2012 or Why has the electronics industry grown in importance? 2012 (ii) Name two cities that have leading software companies. Ans (i) The electronics industry is significant in recent times because it covers a wide range of fields and products including television, computers, transistors, cellular telecom, defence, railways, meteorological equipments, space research, medical equipments and software industry. (ii) Bengaluru and Pune are two cities that have leading software companies.