Depletion of Ozone Layer
Depletion of Ozone Layer
Depletion of ozone layer: : Ozone is a gas which exists as a diatomic molecule (). At about 10 - 15 km above the surface of the earth, there exists a region which is rich in ozone. This region is called the ozonosphere. The presence of ozone layer is important as it absorbs the ultraviolet radiation from the sun and thereby prevents the radiation from reaching the surface of the earth. Unfortunately, the amount of ozone in the ozonosphere is gradually being depleted due to some human activities. Certain types of compounds of carbon, fluorine and chlorine, called chlorofluorocarbons (CFCs), or freons, are freely used in air-conditioners, refrigerators, aerosol sprays, shaving foam, etc. Freons rise up very high in the atmosphere and break down to form chlorine atoms. These chlorine atoms interact with the ozone to form oxygen. As ozone gets converted into oxygen, the amount of ozone in the ozone Iayer decreases. Over time this has created an ozone-deficient area in the atmosphere. This area is called the ozone hole. This is most prominent over Antarctica.
Effects of the ozone hole:
Identify the component which when present in the troposphere is a pollutant and when present in upper layers of atmosphere is a protector of life. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) Ozone is a gas which exists as a triatomic molecule. (b) Ozone holes have been discovered over Antarctica and the Arctic circles. (c) Ozone layer is very important for the existence of life on Earth because it absorbs most of the harmful ultraviolet radiations. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following causing depletion of ozone layer ?
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| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas 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
10thAbhyas 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
7thMy 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 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
8thAbout 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
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thIt 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
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
