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Consider the following statements related to ozone: 1. Tropospheric ozone is harmful 2. Stratospheric ozone is beneficial 3. During prevalence smog, O3 is formed Which of the above statements are correct?

Consider the following statements related to ozone: 1. Tropospheric ozone is harmful 2. Stratospheric ozone is beneficial 3. During prevalence smog, O3 is formed Which of the above statements are correct? Correct Answer 1, 2 and 3

Concept:

Tropospheric ozone (or Ground level ozone): Tropospheric ozone is formed by the interaction of sunlight, particularly ultraviolet light, with hydrocarbons and nitrogen oxides, which are emitted by automobile tailpipes and smokestacks. In the troposphere, near ground-level, ozone molecules are both air pollutants, threatening the health of living things, and greenhouse gases, trapping heat and contributing to climate change. That is why tropospheric ozone is harmful.

Stratospheric ozone: In the stratosphere, ozone molecules play an important role in absorbing ultraviolet radiation from the sun and shielding earth from dangerous rays. As stratospheric ozone prevents most of the high energy ultraviolet solar radiation from reaching the earth's surface, it is regarded as beneficial.

Smog Formation: Smog is produced when sunlight reacts with oxides of nitrogen and at least one volatile organic compound (VOC) in the atmosphere. The chemical formation of air borne particles and ground level ozone forms in the sunlight. The chemical mechanism of formation of smog is following: 

Related Questions

Consider the following statements regarding SMOG: 1. SMOG was coined during the 1950's to describe a mixture of smoke and fog experienced in London 2. The principal pollutants in London SMOG are particulates and sulphur compounds  3. The London SMOG occurs generally early in the morning on cold wet winter days  Which of the above statements are correct?
Which of the following statements is/are correct concerning Ozone gas? 1. Good ozone is found in the upper part of the atmosphere called the Troposphere. 2. The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson units (DU).  3. Research indicates that depletion of the stratospheric ozone layer is being reduced worldwide.  Select the correct answer using the code given below.
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement All fog is smoke. No smog is fog. Conclusion Some fog is smog. Some smog is fog.
Consider the following statements regarding depletion of the ozone layer: 1. Excessive release of chlorine and bromine in the environment from man-made compounds, such as chlorofluorocarbons. 2. Occurrence of certain natural phenomena such as sunspots, and stratospheric winds. 3. Degradation of materials by ultra-violet radiation 4. Major volcanic eruptions. Which of the above can be categorized as causing ozone depletion?
Consider the following statements: 1. Ozone is found mostly in the Stratosphere. 2. Ozone layer lies 55 - 75 km above the surface of the earth. 3. Ozone absorbs ultraviolet radiation from the Sun. 4. Ozone layer has no significance for life on the earth. Which of the above statements are correct?
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Give below are two statements - one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): Forests help in improving the air quality of a place. Reasons (R): Some tree species emit volatile organic compounds (VOCS) such as isoprene which may contribute to the formation of tropospheric ozone. In light of the above statements, choose the correct option: