Pollution Caused by Man
Pollution Caused by Man
1. Automobiles: The numbers of vehicles are increasing rapidly in our cities. The exhaust emission from vehicles contain poisonous substances like sulphur dioxide, carbon monoxide, lead, nitrogen oxides, particulate matter and smoke which cause air pollution on entering in the environment.
2. Domestic activities: When wood, cow dung cakes, coal and kerosene are burnt to cook food, these generate thick smoke which pollute the air. This smoke contains sulphur dioxide, carbon monoxide and unburnt carbon compounds.
3. Industries: Many of the industries like chemical plants, steel, fertilizers, sugar and cement manufacturing units emit large amount of smoke and pollutants like oxides of sulphur and nitrogen, lead particles and chlorofluorocarbons (CFCs) which pollute the air. For example, the emissions from the oil refinery at Mathura and the numerous coal burning industries at Agra contain sulphur dioxide which causes acid rain. Many industries produce chemicals, some of which escape into the atmosphere causing air pollution.
4. Agricultural activities: Excessive use of fertilizers and pesticides in agriculture pollutes the air. Pesticides are those chemical compounds which are used for killing pests that destroy agricultural production or in some way are harmful to humans.
5. Burning of refuse: Due to the burning of refuse, a lot of smoke and ash is produced into the atmosphere. Air is polluted by the presence of gases like sulphur dioxide, carbon dioxide and oxides of nitrogen.
6. Thermal power plants: In thermal power plants huge amount of coal is burnt to produce electricity. Thus, smoke and fly ash is released into the atmosphere. Fly ash consists of minute particles of silica, alumina, lead, arsenic, etc. It can cause irritation and respiratory disorders.
7. Nuclear power plants: They pollute air by releasing radioactive rays.
8. Deforestation: Indiscriminate cutting of trees and clearing of forests increase the amount of carbon dioxide in the atmosphere and thereby pollutes it.
9. Use of chlorofluorocarbons : In refrigeration, fire extinguishers and aerosol sprayers pollute air by depleting the ozone layer.
10. Smoke: Smoke is generated from the exhaust of vehicles like bus, car, autorickshaw, or a scooter. It also comes out from a factory chimney. Speeding cars and trucks cause dust to rise from the roads. Fly ash is generated by the thermal power plants. Cigarette smokers also add to air pollution. They not only harm themselves, but also harm people around them who are forced to inhale the cigarette smoke.
11. Stone dust: Fine dust of stone particles is produced when stones are dug out from beneath and cut, polished or crushed. This stone dust enters into the air. When the air is inhaled the damages the respiratory organs. It can cause many serious disorders like cancer, etc.
Which of the following is not a source of pollution caused by man ? | |||
| Right Option : C | |||
| View Explanation | |||
What are the two main causes of air pollution? | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following chemical is the major cause of ozone depletion ? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
