Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following air pollutants is/are responsible for photochemical smog? (1) Oxides of nitrogen (2) Ozone (3) Unburnt hydrocarbons (4) Carbon monoxide

Which of the following air pollutants is/are responsible for photochemical smog? (1) Oxides of nitrogen (2) Ozone (3) Unburnt hydrocarbons (4) Carbon monoxide Correct Answer (1), (3) and (4)

Explanation

Photochemical smog:

  • Photochemical smog is a condition that develops when primary pollutants (such as oxides of nitrogen and volatile organic compounds) interact under the influence of sunlight to produce a mixture of secondary pollutants.
  • Thus photochemical smog is mainly composed of oxides of nitrogen, volatile organic compounds (primary pollutants), Carbon monoxide, and peroxyacetyl nitrate (PAN) (secondary pollutants).
  • Carbon monoxide accelerates the reaction as measured by nitric oxide oxidation or ozone formation. This finding has relevance to photochemical smog formation.

Note:

It depends on primary pollutants as well as the formation of secondary pollutants.

Primary pollutants include

  1. Oxides of nitrogen, particularly nitric oxide (NO) and nitrogen dioxide (NO2),
  2. Volatile organic compounds.
  3. Carbone monoxide


Secondary pollutants include

  1. Peroxyl-acyl nitrates (PAN), 
  2. Tropospheric ozone,
  3. Aldehydes.

Related Questions

Consider the following pollutants A) Carbon Monoxide (CO) B) Oxides of nitrogen (NOX) C) Suspended Particulate Matter (SPM) D) Unburnt hydrocarbons Which of the pollutants given above are released from vehicular emissions?
Assertion (A): Photochemical smog occurs during the sunny day. Reason (R): When ultraviolet from the sun reacts with nitrogen oxides, NO2 goes through a complex series of reactions with hydrocarbons to produce components of photochemical smog. Select the correct response from the code given below:
In this question, a passage and a statement related to it have been given. Read carefully the verse and review the statement based on it. Delhi, which is one of India's capital an d one of the largest cities in the world, is undergoing severe crisis, due to its high level of urbanization, increasing population and high levels of pollution. Studies have proven that Are the biggest factors of pollution used for industrial and domestic use? And due to their use, people here emit large quantities of nitrogen oxides (NOx), ozone (O3), black carbon (BC) and microorganisms (PM). According to the 2015 Global Burden of Disease report, there were 1.09 million deaths due to PM 2.5 in India. Air pollution was included as one of the 10 biggest threats to health. According to the World Health Organization, 37 cities of India are among 100 worst polluted cities in the world, where PM10 was found to be the highest ever. For the production of ozone, together with sunlight and heat, nitrogen oxides (NOx) and organic compounds (VOCs) are needed simultaneously. Therefore, in the summer months, ozone is produced in large quantities in the cities. Statement: Air pollution is one of the top 10 factors affecting health in India. Select the most suitable from the following options A-statement is absolutely true B-statement is probably true C-statement can not be reviewed D-statement is completely false
In this question, a passage and a statement related to it have been given. Read carefully the verse and review the statement based on it. Delhi, which is one of India's capital an d one of the largest cities in the world, is undergoing severe crisis, due to its high level of urbanization, increasing population and high levels of pollution. Studies have proven that are the biggest factors of pollution used for industrial and domestic use? And due to their use, people here emit large quantities of nitrogen oxides (NOx), ozone (O3), black carbon (BC) and microorganisms (PM). According to the 2015 Global Burden of Disease report, there were 1.09 million deaths due to PM 2.5 in India. Air pollution was included as one of the 10 biggest threats to health. According to the World Health Organization, 37 cities of India are among 100 worst polluted cities in the world, where PM10 was found to be the highest ever. For the production of onoos, together with sunlight and heat, nitrogen oxides (NOx) and organic compounds (VOCs) are needed simultaneously. Therefore, in the summer months, ozone is produced in large quantities in the cities. Statement: Ozone does not arise more than a boundary on the ground in the summer months in cities. Select the most suitable from the following options A-statement is absolutely true B-statement is probably true C-statement can not be reviewed D-statement is completely false
Consider the following air pollutants: 1. NOX (oxides of nitrogen) 2. PAN (Peroxyacytyl nitrate) 3. CO2 (Carbon dioxide) 4. CO (Carbon monoxide) Which of the given air pollutants is/are present in an automobile exhaust gas?
One of the main causes of air pollution in cities is emissions from vehicles like cars and trucks. Cars emit various pollutants which are bad for human health when inhaled, like 1) Nitrogen oxides (NOx) 2) Carbon monoxide (CO) 3) Carbon dioxide (CO2) 4) Benzene Which of the above pollutants are not tolerated by human beings even at very low levels?
Which of the following are considered as Air Pollutants in the National Ambient Air Quality Standards published by the Central Air Pollution Control Board? i. Particulate Matter, ii. Ozone, iii. Nitrogen Dioxide, iv. Carbon Monoxide, v. Pb, vi. Carbon dioxide
Which of the following are some important pollutants released by the steel industry in India? 1. Oxides of sulphur 2. Oxides of nitrogen 3. Carbon monoxide 4. Carbon dioxide Select the correct answer using the code given below.
Which of the following are some important pollutants released by steel industry in India?
1. Oxides of sulphur
2. Oxides of nitrogen
3. Carbon monoxide
4. Carbon dioxide
Select the correct answer:
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?