Frank Modern Certificate Solution for Class 9 Biology Chapter 22 - Sources of Waste
Frank Textbook Solutions Chapter 22 - Sources of Waste
Frank Textbook Solutions are considered extremely helpful for solving difficult questions in the ICSE Class 9 Biology exam. TopperLearning Textbook Solutions are compiled by our subject experts. Herein, you can find all the answers to the questions of Chapter 22 - Sources of Waste for the Frank textbook.
Frank Textbook Solutions for class 9 are in accordance with the latest ICSE syllabus, and they are amended from time to time to be most relevant. Our free Frank Textbook Solutions for ICSE Class 9 Biology will give you deeper insight on the chapters and will help you to score more marks in the final examination. ICSE Class 9 students can refer to our solutions while doing their homework and while preparing for the exam.
Frank Modern Certificate Solution for Class 9 Biology Chapter 22 - Sources of Waste Page/Excercise 208
Examples of domestic waste are left over food items, faeces and urine, broken nails. (Write any two)
Waste is a product of human activity, generated from a great variety of sources.
Garbage refers to refuse consisting largely of easily decomposable and putrefying organic (animal and vegetable) waste.
Waste paper, empty printer cartridges, boxes and packaging, scrap metal etc.
(Write any two)
The basic sources of waste are:
(iii) Agricultural land
Sewage is a complex mixture of many distinctive chemicals. It has high concentrations of ammonium nitrate, phosphorous and many dissolved solids.
Crop residues, fertilizers, insecticides, herbicides and farmyard waste.
Sound sewage system prevents environmental pollution and requires efficient management of collection, treatment and recycling or safe disposal of sewage. It also prevents serious health hazards including viral and bacterial disease transmission.
Due to growing urbanization and development, large quantities of waste is generated due to construction work, some of which includes building materials used for insulation, broken nails, electrical wiring, switches, bulbs, wood, rubble etc. Many hazardous wastes such as lead, asbestos, paints etc. are also generated by construction units. All these lead to environmental pollution. Also there is the problem of disposing off these wastes safely without harming the environment.
E-waste or electronic waste refers to loosely discarded, surplus, obsolete, or broken electronic or electrical devices.
Discarded computers and broken cell phones
Used paper and old furniture
Mining waste includes waste generated during the extraction, beneficiation and processing of minerals. This comprises slimes, gangue, tailing piles and leach residues.
Hazards posed by mining include:
(a) Release of harmful gases such as methane.
(b) Elimination of existing vegetation and destruction of the genetic profile of soil.
(c) Continuous mining at a place can displace or destroy wildlife and habitat.
Waste that is produced by any industrial activity such as that from factories, mills and mines is called industrial waste.
(i) (d)Non-biodegradable chemicals
(ii) (a) Eutrophication
(iii) (a) reducing discharge of waste
(iv) (b) biodegradable pollution
(v) (b) secondary treatment
(vi) (c) sewage
(vii) (b) CO
(viii) (c) reduction in oxygen
(ix) (a) increase
(x) (c) Biological Oxygen Demand
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TopperLearning provides step-by-step solutions for each question in each chapter in the Frank textbook recommended by ICSE schools. Access Chapter 22 - Sources of Waste here. Our Frank Textbook Solutions for ICSE Class 9 Biology are designed by our subject matter experts. These solutions will help you to revise the whole chapter, so you can clear your fundamentals before the examination.