The 'Kabadiwallahs' (rag-pickers) in India play a massive, informal role in:
- Waste recycling
- E waste burning
- Landfill management
- Producing plastics
Explanation: Rag-pickers and kabadiwallahs do a tremendous job of separating materials for recycling, forming the backbone of the informal recycling sector.
Hospital wastes are categorized as hazardous primarily because they contain:
- Glass vials
- Pathogens
- Cotton swabs
- Plastic syringes
Explanation: Hospital waste is highly hazardous because it carries disease-causing pathogens and harmful chemicals that require safe disposal.
State governments across India are pushing to completely ban the use of:
- Single use plastics
- Paper bags
- Glass bottles
- Jute sacks
Explanation: Due to their vast volume and low recycling rate, there are strict nationwide initiatives to completely ban single-use plastics.
Integrated organic farming fundamentally eliminates the need for expensive:
- Chemical fertilizers
- Seed planting
- Manual labor
- Water irrigation
Explanation: By utilizing organic compost and natural waste cycling, there is no need to use expensive chemical fertilizers for crop production.
Mixing Polyblend with bitumen significantly enhances the road's:
- Heat absorption capacity
- Overall flexibility
- Water repelling properties
- Light reflection rate
Explanation: The blend of Polyblend and bitumen increases the water-repelling properties of bitumen, thereby increasing the life of the road.
Hospital waste is particularly dangerous because it often contains highly toxic chemicals and:
- Heavy metals
- Radioactive materials
- Pathogenic organisms
- Asbestos fibers
Explanation: Hospital waste contains dangerous pathogens, disinfectants, and harmful chemicals, making it highly hazardous.
Composting is an effective, natural waste management method suitable only for:
- Plastic waste
- Radioactive waste
- Electronic waste
- Biodegradable waste
Explanation: Composting uses natural microbial action to break down organic, biodegradable waste into nutrient-rich humus.
The Basel Convention was established to primarily control the international movement of:
- Nuclear weapons
- Greenhouse gases
- Hazardous wastes
- Endangered species
Explanation: The Basel Convention is an international treaty that restricts the transboundary movements of hazardous wastes, including certain types of e-waste, to developing countries.
The lifespan of roads laid using the Polyblend-bitumen mixture is generally:
- Doubled
- Increased three times
- Halved
- Unaffected
Explanation: Roads laid with the Polyblend and bitumen mixture have a lifespan that is increased by a factor of three compared to normal roads.
Lower doses of nuclear radiation are known to create various types of:
- Immunity boosts
- Muscle hypertrophy
- Bone strengthening
- Genetic disorders
Explanation: At lower doses, radiation creates genetic disorders and is a known carcinogen, frequently causing cancers like leukemia.
Which gas is predominantly generated by the anaerobic decomposition of waste in landfills?
- Methane
- Oxygen
- Nitrous oxide
- Sulfur dioxide
Explanation: Landfills are highly anaerobic environments where organic waste decays to produce methane, a potent greenhouse gas.
The recommended method for storing highly radioactive waste involves shielding it within:
- Shallow soil pits
- Ocean floor trenches
- Deep rock containers
- Open air facilities
Explanation: Storage of nuclear waste, after sufficient pre-treatment, should be done in suitably shielded containers buried within the rocks.
The 'Swachh Bharat Abhiyan' focuses heavily on solid waste management and eliminating:
- Open defecation
- Nuclear waste
- Air pollution
- Noise pollution
Explanation: A major objective of the Swachh Bharat Abhiyan was to eradicate open defecation alongside improving solid waste management systems.
Integrated organic farming is characterized as a cyclical, zero-waste procedure because:
- Water is never used
- Waste becomes resources
- No crops are grown
- Chemicals are recycled
Explanation: In integrated organic farming, waste products from one process are recycled as nutrients for other processes, resulting in zero waste.
Radioactive waste should be buried deep within rocks at a depth of about:
- 500 meters
- 10 meters
- 50 meters
- 1000 meters
Explanation: It is recommended that nuclear waste be buried about 500 meters deep below the earth's surface within shielded containers.
The use of chemical pesticides and fertilizers has increased drastically to enhance:
- Crop yields
- Water quality
- Forest cover
- Soil moisture
Explanation: In the wake of the Green Revolution, the use of agrochemicals like inorganic fertilizers and pesticides has significantly increased to enhance crop production.
Waste generated from homes, offices, schools, and hospitals is broadly called:
- Agricultural waste
- Radioactive waste
- E waste
- Municipal solid waste
Explanation: Municipal solid waste comprises everyday items discarded by the public from homes, offices, schools, and hospitals.
Irreparable computers and electronic goods are officially categorized as:
- Commercial waste
- Hazardous waste
- E waste
- Solid municipal waste
Explanation: Electronic waste (e-waste) consists of irreparable computers, mobile phones, and other electronic goods.
Before the adoption of sanitary landfills, solid municipal waste was primarily disposed of via:
- Ocean dumping
- Open burning dumps
- Deep well injection
- Chemical neutralization
Explanation: Historically, municipal waste was collected and dumped in open areas where it was burned to reduce its overall volume.
In Ramesh Dagar's farming model, crop waste is predominantly used to create:
- Liquid fuel
- Plastic substitutes
- Compost
- Pesticides
Explanation: Crop waste is utilized to create compost, which acts as a natural fertilizer or can be used to generate natural gas for farm energy.
The 'Three R's' strategy for solid waste management stands for Reduce, Reuse, and:
- Remake
- Recover
- Recycle
- Refuse
Explanation: Reduce, Reuse, and Recycle are the three essential pillars of an eco-friendly approach to municipal solid waste management.
Polyblend is typically mixed with which material to lay roads?
- Gravel
- Bitumen
- Cement
- Concrete
Explanation: Polyblend is mixed with bitumen, a standard road-laying material, to improve the durability and quality of the roads.
What is the term for the liquid that drains or 'leaches' from a landfill?
- Effluent
- Sludge
- Leachate
- Runoff
Explanation: Leachate is the toxic liquid formed when rainwater filters through wastes placed in a landfill, posing a danger to groundwater.
In developed countries, e-waste is predominantly disposed of using:
- Incineration or landfill
- Open burning
- Biological degradation
- Deep sea dumping
Explanation: Most e-waste generated in developed countries is buried in landfills or completely incinerated.
Which institution collaborated with Ahmed Khan to prove the efficacy of Polyblend?
- Delhi University
- IIT Madras
- IISc Bangalore
- RV College Engineering
Explanation: Ahmed Khan collaborated with RV College of Engineering and the Bangalore City Corporation to test and implement Polyblend for road construction.
Municipal solid waste can be broadly categorized into how many primary types?
- Five types
- Four types
- Three types
- Two types
Explanation: Solid waste is categorized into three types: bio-degradable, recyclable, and non-biodegradable.
The most appropriate and environmentally sound treatment for e-waste is:
- Ocean dumping
- Recycling
- Landfilling
- Open burning
Explanation: Recycling is the only environmentally sound solution for the treatment of e-waste, provided it is carried out in an environment-friendly manner.
In integrated organic farming, cow dung is utilized extensively as a:
- Natural fertilizer
- Chemical pesticide
- Weed killer
- Water purifier
Explanation: Cow dung is composted and used as a rich, natural fertilizer, eliminating the need for expensive chemical fertilizers.
Over half of the e-waste generated in the developed world is exported to:
- Oceanic trenches
- Space stations
- Developing nations
- Polar regions
Explanation: A massive portion of e-waste from the developed world is exported to developing nations like India, China, and Pakistan for metal recovery.
Which component of municipal solid waste takes the longest time to degrade naturally?
- Cotton clothing
- Food scraps
- Paper products
- Plastics
Explanation: Plastics are synthetic polymers that take centuries to break down, unlike paper, food, or cotton which are readily biodegradable.
The fine powder of recycled modified plastic used in road construction is called:
- Asphalt
- Microplastic
- Polyblend
- Bitumen
Explanation: Polyblend is a fine powder of recycled modified plastic developed by Ahmed Khan's company in Bangalore to tackle plastic waste.
Ahmed Khan offered rag-pickers a significantly higher price for plastic waste to manufacture:
- Chemical fertilizers
- E waste components
- Hospital equipment
- Polyblend
Explanation: To secure enough raw material (any plastic film) for producing Polyblend, Khan raised the price paid to rag-pickers from Rs. 0.40 to Rs. 6.00 per kg.
Which of the following is a highly persistent, non-biodegradable pesticide?
Explanation: DDT is a synthetic, non-biodegradable pesticide that persists in the environment and accumulates in the fat tissues of organisms.
Which type of waste can be put into deep pits in the ground for natural breakdown?
- Biodegradable waste
- E waste
- Radioactive waste
- Hospital waste
Explanation: Biodegradable materials can be placed in deep pits where natural microbial action breaks them down into compost.
In developing countries, the recycling of e-waste heavily involves:
- Biological breakdown
- Chemical dissolution
- Automated robotic machines
- Informal manual labor
Explanation: Unlike developed countries with specific facilities, recycling in developing nations often involves manual labor in the informal sector.
Workers handling e-waste manually are exposed to dangerous levels of:
- Toxic heavy metals
- Radioactive isotopes
- Pathogenic viruses
- Corrosive acids
Explanation: Manual dismantling of e-waste exposes workers to highly toxic heavy metals like lead, mercury, and cadmium.
What is the primary motivation for municipalities to encourage separating waste at the source?
- To facilitate recycling
- To burn it faster
- To tax citizens
- To reduce transport costs
Explanation: Separating waste into biodegradable, recyclable, and non-biodegradable bins makes the recycling and composting processes much more efficient.
A major environmental problem associated with modern sanitary landfills is the:
- Lack of space
- Excessive heat generation
- Rapid organic decomposition
- Immediate land collapse
Explanation: The amount of garbage generated is so high that landfills are rapidly filling up, leading to a severe lack of space.
Improper dismantling of e-waste often releases which toxic substances into the environment?
- Chlorinated hydrocarbon sprays
- Brominated flame retardants
- Sulfuric acid vapors
- Nitrous oxide gases
Explanation: E-waste often contains brominated flame retardants in its plastic casings, which are highly toxic when burned or improperly dismantled.
In the context of waste, 'fly ash' is primarily a byproduct of:
- E waste recycling
- Thermal power plants
- Water treatment
- Nuclear reactors
Explanation: Fly ash is a fine particulate waste product generated by the combustion of coal in thermal power plants.
'Zero waste' manufacturing implies that industrial processes are designed so that:
- Only water remains
- Energy is wasted
- Emissions are doubled
- No waste remains
Explanation: Zero waste is a philosophy that encourages the redesign of resource life cycles so that all products are reused, leaving no trash to be sent to landfills.
Radioactive waste initially posed a major problem due to accidental leakage and:
- Safe disposal
- High transportation cost
- Heavy weight
- Low energy yield
Explanation: The two most formidable problems with nuclear energy are accidental leakages and the safe disposal of highly dangerous radioactive waste.
Sanitary landfills are characterized by burying waste in a depression and covering it daily with:
- Plastic sheets
- Dirt or soil
- Concrete slabs
- Liquid asphalt
Explanation: In a sanitary landfill, wastes are dumped in a trench or depression and covered with dirt every day to prevent pest access and odors.
Another critical danger of landfills is the contamination of groundwater caused by:
- Seepage of chemicals
- Radioactive decay
- Methane gas explosion
- Heavy soil erosion
Explanation: Rainwater percolating through the compacted waste can leach toxic chemicals into underlying groundwater aquifers.
Which of the following is an active component of Dagar's integrated farming approach?
- Bee keeping
- Deep sea fishing
- Mining operations
- Plastic recycling
Explanation: Dagar's integrated system combines bee-keeping, dairy management, water harvesting, composting, and agriculture in a chain of processes.
Radiation given off by nuclear waste is extremely damaging to organisms because it causes:
- Asphyxiation
- Mutations
- Frostbite
- Thermal burns
Explanation: Nuclear radiation causes mutations in the DNA of organisms at a very high rate, which can lead to severe genetic defects.
Polyblend was deemed a breakthrough because it provided an eco-friendly solution to:
- E waste
- Agricultural waste
- Plastic waste
- Radioactive waste
Explanation: Ahmed Khan's Polyblend utilized discarded plastic bags to create a durable road-building material, mitigating the plastic waste crisis.
Which farmer from Sonipat, Haryana, successfully implemented integrated organic farming?
- Vandana Shiva
- Sunderlal Bahuguna
- Ramesh Chandra Dagar
- Ahmed Khan
Explanation: Ramesh Chandra Dagar practically demonstrated that integrated organic farming is an economically viable and highly sustainable procedure.
Who is ultimately responsible for reducing the generation of municipal solid waste?
- Every citizen
- Only the government
- Only rural farmers
- Only private companies
Explanation: Our prime objective should be to reduce waste generation, which requires the active participation and behavioral change of every citizen.
What is the primary reason plastics are considered a major environmental menace?
- Water solubility
- Extreme weight
- High production cost
- Non biodegradable nature
Explanation: Plastics do not undergo natural microbial decomposition, causing them to persist in the environment for hundreds of years.
Which environmental hazard is heavily associated with the open burning of electronic wires?
- Acid rain
- Dioxin emissions
- Ozone depletion
- Eutrophication
Explanation: Open burning of PVC-coated electronic wires to extract copper releases highly toxic and carcinogenic dioxins into the atmosphere.
What happens to the volume of waste when it is processed in an incinerator?
- Increases dramatically
- Remains unchanged
- Expands slightly
- Reduces significantly
Explanation: Incineration involves burning waste at high temperatures, which drastically reduces its volume to ashes.
Due to its hazardous nature, hospital waste must strictly be disposed of using:
- Incinerators
- Composting pits
- Sanitary landfills
- Open dumps
Explanation: The use of incinerators is crucial for hospital waste to safely destroy pathogens and neutralize toxic chemicals at high temperatures.
Which of the following metals is commonly recovered from e-waste?
- Copper
- Uranium
- Thorium
- Plutonium
Explanation: Metals like copper, iron, silicon, nickel, and gold are routinely extracted from e-waste during the recycling process.
Extended Producer Responsibility (EPR) mandates that the manufacturer is responsible for the:
- Advertising costs
- Worker healthcare
- Raw material extraction
- Product disposal
Explanation: EPR is a policy approach where producers are given a significant responsibility for the treatment or disposal of post-consumer products.
To spread information about organic farming practices, Ramesh Dagar created the:
- Sonipat Agriculture Union
- Zero Waste Alliance
- Organic Farmers Association
- Haryana Kisan Welfare Club
Explanation: Dagar established the Haryana Kisan Welfare Club, which now boasts thousands of farmers as members, to promote these sustainable practices.
Toxic agrochemicals are particularly dangerous because they can undergo:
- Biomagnification
- Eutrophication
- Photosynthesis
- Fermentation
Explanation: Pesticides and herbicides are toxic to non-target organisms and can biomagnify in the terrestrial ecosystems, harming higher trophic levels.
Which highly toxic metal is frequently found in old computer monitors?
Explanation: Old Cathode Ray Tube (CRT) computer monitors contain significant amounts of toxic lead, posing severe health hazards during manual dismantling.
E-waste recycling in developing countries primarily aims to recover which materials?
- Plastic polymers
- Glass components
- Precious metals
- Silicon wafers
Explanation: In developing nations, e-waste is manually recycled to recover precious metals like gold, alongside other valuable materials and base metals like copper, iron, silicon, and nickel.
High doses of nuclear radiation are typically:
- Beneficial
- Lethal
- Harmless
- Stimulating
Explanation: At high doses, nuclear radiation is lethal as it causes massive cellular damage and acute radiation sickness.