NCERT Solutions for 12th Class Biology: Chapter 16-Environmental Issues Class 12: Biology Chapter 16 solutions. Complete Class 12 Biology Chapter 16 Notes. NCERT Solutions for 12th Class Biology: Chapter 16-Environmental Issues NCERT 12th Biology Chapter 16, class 12 Biology chapter 16 solutions Page No: 286 https://www.indcareer.com/schools/ncert-solutions-for-12th-class-biology-chapter-16-environme ntal-issues/ Exercises (NCERT 12th Biology Chapter 16) 1. What are the various constituents of domestic sewage?Discuss the effects of sewage discharge on a river. Answer The various constituents of domestic sewage ...
ENVIRONMENTAL ISSUES 113 CHAPTER 16 ENVIRONMENTAL ISSUES MULTIPLE-CHOICE QUESTIONS 1. Non-biodegradable pollutants are created by: a. nature b. excessive use of resources c. humans d. natural disasters 2. According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter: a. 2.50 micrometers b. 5.00 micrometers c. 10.00 micrometers d. 7.5 micrometers 3. The material generally used for sound proofing of rooms like a recording studio and ...
NCERT Solutions for Class 12 Biology Chapter 16 Environmental Issues Class 12 Chapter 16 Environmental Issues Exercise Solutions Exercise : Solutions of Questions on Page Number : 286 Q1 : What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Answer : Domestic sewage is the waste originating from the kitchen, toilet, laundry, and other sources. It contains impurities such as suspended solid (sand, salt, clay), colloidal material (fecal matter, bacteria, plastic and ...
CBSE Class 12 Political Science (Contemporary World Politics) NCERT Solutions Chapter-8 Environment And Natural Resources Q 1. Which among the following best explains the reason for growing concerns about the environment? a. The developed countries are concerned about projecting nature. b. Protection of the environment is vital for indigenous people and natural habitats. c. The environmental degradation caused by human activities has become pervasive and has reached a dangerous level. d. None of the above. Ans. c. The environmental degradation ...
NCERT Solutions for Class 12 Biology Chapter 16 – Environmental Issues Exercise page no. 286 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Solution: The wastes generated from households – from the toilet, kitchen, laundry and other related sources is termed as Domestic sewage. It contains contaminants in the form of disease-causing microbes, suspended solid (clay, salt, sand), colloidal matter (bacteria, plastic, cloth fiber, fecal matter), dissolved matter (phosphate, nitrate ...
Class- XII-CBSE-Biology Environmental issues CBSE NCERT Solutions for Class 12 Biology Chapter 16 Back of Chapter Questions 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Solution: The various constituents of domestic sewage are: i) Faecal matter, detergent wastes, bacteria, and paper fibres. ii) Toxic metal ions and organic compounds. iii) Nutrients such as nitrate, ammonia, phosphate, sodium, and calcium. Effects of sewage discharge on a river: i. Sewage water contains ...
NCERT Exemplar Solutions for Class 12 Biology Chapter 16 - Environmental Issues Multiple-Choice Questions 1. Non-biodegradable pollutants are created by a. Nature b. Excessive use of resources c. Humans d. Natural disasters Ans: Correct option is c. Toxic pollutants which cannot be degraded or decomposed in a natural way into less harmful components are called as non-biodegradable pollutants i.e., they would not decompose when thrown away on ground. The primary source of non-biodegradable pollutants are humans because of the ...
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