Topic: Environmental Pollution (53 Questions)

Consider the following statements:

• Statement I.Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions.
• Statement II.Silica-bearing clay is mixed with limestone while manufacturing cement.
• Statement III.Limestone is converted into lime during clinker production for cement manufacturing.

Which one of the following is correct in respect of the above statements?

With reference to 'Direct Air Capture', an emerging technology, which of the following statements is/are correct?

• I.It can be used as a way of carbon sequestration.
• II.It can be a valuable approach for plastic production and in food processing.
• III.In aviation, it can be a source of carbon for combining with hydrogen to create synthetic low-carbon fuel.

Select the correct answer using the code given below.

Consider the following statements:

• I.Carbon dioxide (CO2) emissions in India are less than 0.5 t CO2/capita.
• II.In terms of CO2 emissions from fuel combustion, India ranks second in Asia-Pacific region.
• III.Electricity and heat producers are the largest sources of CO2 emissions in India.

Which of the statements given above is/are correct?

Consider the following:

• I.Cigarette butts
• II.Eyeglass lenses
• III.Car tyres

How many of them contain plastic?

Consider the following statements:

• Statement I.Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries.
• Statement II.Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals.
• Statement III.Activated carbon can be easily synthesized from environmental wastes with high carbon content.

Which one of the following is correct in respect of the above statements?