With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct?
- Fly ash can be used in the production of bricks for building construction.
- Fly ash can be used as a replacement for some of the Portland cement content of concrete.
- Fly ash is made up of silicon dioxide and calcium oxide only and does not contain any toxic elements.
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More questions fromEnvironment & Ecology
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Which one of the following is the best description of the term “ecosystem”?
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With reference to ‘Forest Carbon Partnership Facility’, which of the following statements is/are correct?
- It is a global partnership of governments, businesses, civil society and indigenous peoples.
- It provides financial aid to universities, individual scientists and institutions involved in scientific forestry research to develop eco-friendly and climate adaptation technologies for sustainable forest management
- It assists the countries in their ‘REDD+ (Reducing Emission from Deforestation and Forest Degradation+)’ efforts by providing them with financial and technical assistance.
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- Environment & EcologyView Answer
‘BioCarbon Fund Initiative for Sustainable Forest Landscapes’ is managed by the -
- Environment & EcologyView Answer
What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture?
- The proliferation of nitrogen-fixing microorganisms in the soil can occur.
- Increase in the acidity of soil can take place
- Leaching of nitrate to the ground-water can occur.
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- Environment & EcologyView Answer
With reference to ‘fuel cells’ in which hydrogen-rich fuel and oxygen are used to generate electricity. Consider the following statements:
- If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by-products.
- Fuel cells can be used for powering buildings and not for small devices like laptop computers.
- Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is/are correct?
- Environment & EcologyView Answer
With reference to an organization known as ‘Birdlife International’ which of the following statements is/are correct?
- It is a Global Partnership of Conservation Organizations.
- The concept of ‘biodiversity hotspots’ originated from this organization.
- It identifies the sites known/referred to as ‘Important Bird and Biodiversity Areas’.
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PYQs by Subject of 2015
Most repeated Topics from Environment & Ecology in Last 5 years
Repeated Topics | Questions in Last 5 Years |
|---|---|
| Environmental Pollution | 15 (21%) |
| Climate Change Mitigation | 14 (19%) |
| Institutional Measures for Environment Conservation | 12 (17%) |
| Climate Change | 12 (17%) |
| Indian Biodiversity - Fauna | 8 (11%) |
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