എന്താണ് ‘യുട്രോഫിക്കേഷൻ' ?
- ജലാശയങ്ങളിൽ പോഷക ഘടകങ്ങൾ വർദ്ധിക്കുക
- ആഹാര ശൃംഖലയിൽ വിഷാംശം കൂടിവരുക
- അന്തരീക്ഷത്തിൽ ചൂടു കൂടുന്ന അവസ്ഥ
- ഇവയൊന്നുമല്ല
IUCN എന്ന സംഘടനയെ സംബന്ധിക്കുന്ന ശരിയായ പ്രസ്താവനകൾ ഏവ?
- ജൈവവൈവിധ്യ സംരക്ഷണമാണ് ഇതിന്റെ ലക്ഷ്യം
- ജപ്പാനാണ് IUCN ൻ്റെ ആസ്ഥാനം
- റെഡ് ഡാറ്റാ ബുക്ക് തയ്യാറാക്കുന്നു.
- ഈ സംഘടന വിവിധ രാജ്യങ്ങളിൽ പ്രവർത്തിച്ചുവരുന്നു
What are the primary challenges associated with the disposal of radioactive wastes from nuclear energy production?
- Potential risk of accidental leakage and radiation exposure
- Generation of mutations and cancer due to radiation exposure
- Opposition from the public to the proposed underground storage method
What are potential environmental impacts of excessive use of inorganic fertilizers and pesticides in agriculture?
- Increased biodiversity in soil ecosystems.
- Reduction in soil fertility and disruption of natural processes.
- Accelerated growth of beneficial microorganisms in the soil.
- Biomagnification of pesticides in terrestrial ecosystems.
In waste management, what are the primary objectives of sorting garbage into categories such as bio-degradable, recyclable, and non-biodegradable?
- Accelerating natural breakdown
- Facilitating rapid incineration
- Simplifying landfill maintenance
- Enhancing recycling efficiency
How does the use of incinerators contribute to the disposal of hospital waste?
- Reducing Pathogenic Microorganisms
- Ensuring careful treatment and disposal of hazardous waste
- Facilitating landfill decomposition
What are the primary advantages of employing Compressed Natural Gas (CNG) as a vehicular fuel over diesel?
- CNG exhibits a higher cost-efficiency ratio compared to diesel.
- CNG is less susceptible to tampering and adulteration, ensuring fuel integrity.
- CNG combustion is characterized by optimal efficiency, minimizing residual unburnt components.
In the context of air pollution control, what is the primary function of an electrostatic precipitator?
- Increasing the concentration of harmless gases in industrial emissions.
- Removing over 99% of particulate matter from the exhaust of thermal power plants.
- Converting unburnt hydrocarbons into carbon dioxide and water.
- Facilitating the absorption of harmful gases using a spray of water or lime.
Which of the following options best describes the primary function of a scrubber in the context of air pollution control from industrial emissions?
- Scrubbers are electrostatic devices that remove particulate matter from industrial exhausts to prevent its release into the atmosphere.
- Scrubbers utilize a high-speed air flow to separate harmful gases, such as nitrogen and oxygen, from industrial emissions before their release.
- Scrubbers reduce the concentration of harmful particulate matter smaller than 2.5 micrometers in diameter, effectively mitigating their detrimental effects on human health.
- Scrubbers use a spray of water or lime to eliminate gases like sulfur dioxide from industrial exhausts before their dispersal into the environment.
Which of the following statements accurately represents the role of catalytic converters in reducing atmospheric pollution caused by automobiles?
- Catalytic converters increase the emission of poisonous gases by automobiles, contributing to air pollution.
- Catalytic converters utilize expensive metals as catalysts to convert unburnt hydrocarbons into carbon dioxide and water.
- Catalytic converters are primarily responsible for releasing harmful particulate matter into the atmosphere, leading to respiratory issues in humans.
Which of the following statements about greenhouse gases and their impact on global warming are true?
- Methane (CH4) has a much higher heat-trapping potential than carbon dioxide
- Water vapor is a greenhouse gas
- Greenhouse gases absorb and re-emit infrared radiation, trapping heat in the atmosphere.
With reference to an initiative called ‘The Economics of Ecosystems and Biodiversity (TEEB)’ which of the following statements is/are correct ?
- It is an initiative hosted by UNEP/IMF and World Economic Forum
- It is a global initiative that focuses on drawing attention to the economic benefits of biodiversity.
- It presents an approach that can help decision makers recognize, demonstrate and capture the value of ecosystem and biodiversity.
Assertion (A) : Biosphere constitutes an excellent life-support system which is sustainable
and can fulfil all human needs.
Reason (R) : The size and productivity of the biosphere is limited by availability of water,
nutrients and environmental conditions.
Identify the correct code :
Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct ?
- Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
- The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
- The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines