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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?
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:
Which one of the following automobile exhaust gas pollutants is a major cause of photochemical smog?
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.
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 one of the following pollutants or pairs of pollutants is formed due to photochemical reactions?
What is the major pollutant present in photochemical smog?
Read the paragraph and answer the question that follows: Incessant combustion of fossil fuels emits toxic gases, polluting the air; urbanization results in deforestation and hence poor air quality; littering of plastic waste damages the productivity of soil and pollutes water bodies. Environmental pollution results in more serious consequences like – global warming, unexpected climatic changes, depletion of natural resources, species depletion, and various other adverse effects leading to a lowered sustainability of life on earth. Another prime contributor to the pollution of the environment is plastic pollution. Plastic bags those are not disposed of properly, reach the soil and water bodies, polluting them and damaging dependent lives. Being non-bio degradable plastic lingers around for years, rendering them useless. What is the prime contributor to pollution?
Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate?
Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .