Pollution

How many contain plastic: cigarette butts, eyeglass lenses, car tyres?

Artificial rainmaking to reduce air pollution makes use of which chemical agents?

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of Sulphur dioxide emissions?

"Membrane Bioreactors" are often discussed in the context of:

Consider the following statements: Statement-1: Many chewing gums found in the market are considered a source of environmental pollution. Statement-2: Many chewing gums contain plastic as gum base. Which one of the following is correct in respect of the above statements?

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer products, consider the following statements: 1. PFAS are found to be widespread in drinking water, food and food packaging materials. 2. PFAS are not easily degraded in the environment. 3. Persistent exposure to PFAS can lead to bioaccumulation in animal bodies. Which of the statements given above are correct?

Consider the following statements regarding mercury pollution : 1. Gold mining activity is a source of mercury pollution in the world. 2. Coal-based thermal power plants cause mercury pollution. 3. There is no known safe level of exposure to mercury. How many of the above statements are correct?

In the context of WHO Air Quality Guidelines, consider the following statements: 1. The 24-hour mean of PM2.5 should not exceed 15 ug/m³ and annual mean of PM2.5 should not exceed 5 µg/m³. 2. In a year, the highest levels of ozone pollution occur during the periods of inclement weather. 3. PM10 can penetrate the lung barrier and enter the bloodstream. 4. Excessive ozone in the air can trigger asthma. Which of the statements given above are correct?

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements: 1. Its fibres can be blended with wool and cotton fibres to reinforce their properties. 2. Containers made of it can be used to store any alcoholic beverage. 3. Bottles made of it can be recycled into other products. 4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions. Which of the statements given above are correct?

Consider the following: 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are cause(s) of acid rain?

Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves within homes 4. Power plants 5. Telephone lines. Select the correct answer using the code given below.

‘R2 Code of Practices’ constitutes a tool available for promoting the adoption of

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment. 2. The copper slag can cause the leaching of some heavy metals into environment. 3. They may release sulphur dioxide as a pollutant. Select the correct answer using the code given below.

Which of the following are the reasons/factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wooden furniture 5. Using products made of polyurethane Select the correct answer using the code given below:

Consider the following statements: 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release sulphur dioxide and oxides of nitrogen into the encironment. 3. High ash content is observed in Indian coal. Which of the statement given above is/are correct?

In India ‘extended producer responsibility’ was introduced as an important feature in which of the following?

As per the Solid Waste Management Rules, 2016 in India, which one of the following statements is correct?

In the context of which one of the following are the terms ‘pyrolysis and plasma gasification’ mentioned?

Consider the following statements: 1. Agriculture soils release nitrogen oxides into environment. 2. Cattle release ammonia into environment. 3. Poultry industry releases reactive nitrogen compounds into environment. Which of the statements given above is/are correct?

Consider the following 1. Carbon monoxide 2. Methane 3. Ozone 4. Sulphur dioxide Which of the above are released into atmosphere due to the burning of crop/biomass residue?

Biological Oxygen Demand (BOD) is a standard criterion for

1. Carbon dioxide 2. Carbon monoxide 3. Nitrogen dioxide 4. Sulphur dioxide 5. Methane

With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct? 

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

Consider the following languages: 1. Gujatati 2. Kannada 3. Telugu Which of the above has/have been declared as ‘Classical Language / Languages’ by the Government?

Which of the following can be found as pollutants in the drinking water in some parts of India? 1\. Arsenic 2\. Sorbitol 3\. Fluoride 4\. Formaldehyde 5\. Uranium Select the correct answer using the codes given below.

Due to improper / indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste? 1\. Beryllium 2\. Cadmium 3\. Chromium 4\. Heptachlor 5\. Mercury 6\. Lead 7\. Plutonium Select the correct answer using the codes given below.

Acid rain is caused by the pollution of environment by

Photochemical smog is a resultant of the reaction among

Chlorofluorocarbons, known as ozone depleting substances are used 1\. In the production of plastic foams 2 in the production of tubeless tyres 3\. In cleaning certain electronic components 4\. As pressurizing agents in aerosol cans **Which of the statements given above is/are correct?**

Salinization occurs when the irrigation water accumulated in the soil evaporates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land?

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?