wrong Flashcards
CO2 injection technology is used to
1. Enhance oil recovery from ageing oil fields
2. Reduce the carbon content of vehicular emissions
3. Sequester atmospheric carbon for ocean basin storage
Which of the above statement(s) is/are correct?
a) 1 only
b) 1, 2
c) 1, 3
d) 1, 2, 3
olution: a)
Under it, CO2 gas is injected with residual oil in the ageing field in which total oil production has been declining.
It reduces its viscosity and makes it easier to displace oil from the rock pores. CO2 gas also swells oil, thereby
pushing it towards the producing well for extraction.
CO2- Enhanced Oil Recovery (EOR) works most commonly by injecting CO2 into already developed oil fields where
it mixes with and ‘releases’ the oil from the formation, thereby freeing it to move to production wells. CO2 that
emerges with the oil is separated in above-ground facilities and re-injected into the formation.
CO2 EOR is an important component of U.S. oil production.
Consider the following statements.
1. The gharials are found in north Indian rivers of Ganga, Yamuna, Chambal and their tributaries.
2. In India, gharials were reintroduced into the Beas Conservation Reserve.
Which of the above statements is/are correct?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
olution: c)
Successful reintroduction of the critically endangered Gharial (Gavialis Gangeticus) in the rivers of Punjab where it
had become extinct half a century ago.
The gharial reintroduction in the Beas Conservation Reserve is an ambitious programme of the Punjab
government.
The gharial can be found in north Indian rivers like the Ganga, Yamuna, Chambal and their tributari
Consider the following statements regarding India State of Forest Report-2021.
1. According to the report, Forest and tree cover in the country has decreased since the last assessment in
2019.
2. In India the total forest and tree cover accounted for less than 30% of the geographical area of the
country.
3. The accuracy in the current assessment of forest cover classification has been more than 90%.
Which of the above statements is/are correct?
a) 2 only
b) 1, 2
c) 2, 3
d) 1, 2, 3
Solution: c)
Forest and tree cover in the country had increased by 2,261 square kilometres since the last assessment in 2019,
according to the India State of Forest Report-2021.
The total forest and tree cover was 80.9 million hectares, which accounted for 24.62% of the geographical area of
the country.
The accuracy level achieved in the current assessment is significantly high. The accuracy of forest cover
classification has been assessed 92.99%. The accuracy of classification between forest and non-forest classes has
been assessed 95.79% against internationally accepted accuracy of classification of more than 85%
. Countries are setting their Net-zero emission goal based on the 2015 Paris Agreement guidelines.
false
The net-zero goal does not figure in the 2015 Paris Agreement, the new global architecture to fight climate
change. The Paris Agreement only requires every signatory to take the best climate action it can.
what gives sea its distinct smell
Marine phytoplankton emit dimethylsulphide, or DMS, an organic sulphur-containing compound that gives the sea its distinct smell. When oxidized, DMS can produce sulphur aerosols that serve as cloud condensation nuclei that play an important role in cloud formation
petersberg climate dialogue
The Petersberg Climate Dialogue was launched in 2010 by former German Chancellor Angela Merkel and brings together selected states on an annual basis to prepare the ground for successful negotiations at the UNFCCC climate change conferences
Earth hour is an initiative of WEF backed by UNEP
False
WWF , no unep backing
8) Consider the following statements regarding the recent Asia Ministerial Conference on Tiger
Conservation.
1. It was organized by India in collaboration with the International Union for Conservation of Nature
(IUCN).
2. It reviewed the progress towards the Global Tiger Recovery Programme.
3. It is the first such ministerial conference to have happened in Asia.
only 2 is corect
was organized by Malaysia and Global Tiger
Forum (GTF)
The 1st ASIA Ministerial Conference (AMC) was held in Thailand from 27–30 January 2010, the 2nd
AMC was held at Thimpu, Bhutan (2012), and the 3rd Asia Ministerial Conference on Tiger Conservation
was held in New Delhi, India, from 12th-14th April 2016.
Important mangrove species in India
Avicennia officinalis, Rhizophora mucronata, Sonneratia alba, Avicennia alba, Bruguiera cylindrica, Heritiera littoralis, Phoenix paludosa, Morinda citrifolia & Ceriops tagal.
CorL reef in India in middle of ocean
Angariya bank, Maharashtra
Most common use of polyurethane
Polyurethanes are commonly used in a number of medical applications, includingcatheter and general purpose tubing, hospital bedding, surgical drapes, wound dressings and a variety of injection-molded devices. Their most common use is in short-term implants.
Reintroduction of cheeta in India is ex situ or in situ conservation
Ex situ conservation
Oldest existing zoo in the country
Marble palace zoo, kolkata
Largest zoo
Sri venkiteshwara, andhra
- Only the euphotic zone of the marine ecosystem receives sunlight; the aphotic and dysphotic zones are devoid of sunlight.
- The Photic zone extends from the water surface to where the light level is 10% of that at the surface.
The Disphotic Zone is found just below the Photic Zone and is known as the twilight layer. In this zone only a small amount of light penetrates the water. Plants do not grow here due to the insufficient amount of light
he photic (or “euphotic”) zone is the lighted and usually wellmixed portion that extends from the lake surface down to where the light level is 1% of that at the surface
- Corals are slow-growing colonies of Plants, whereas Zooxanthellae are fast-growing animals.
- Known as the rainforests of the sea, they are among the most productive and diverse ecosystems on earth.
- Barrier reefs are the most common reefs grown near the coastlines of the oceans.
- Blast fishing methods could save thousands of corals from dying.
) 2 only
Coral is actually a living animal. Coral has a symbiotic relationship (each gives something to the other and gets something back in return) with ‘zooxanthellae ‘microscopic algae which live on coral. The corals are generally slow-growing colonies of animals, while zooxanthellae are fast-growing plants.
The Belize Barrier Reef, the 2nd largest in the world behind Australia’s Great Barrier Reef, has made Belize a premiere diving and conservation hotspot. Barrier reefs
also border shorelines, but at a greater distance. They are separated from their adjacent land mass by a lagoon of open, often deep water.
- The terms alexandrium, microcystic and Pseudo-nitzschia are associated with :
Depending on the type of algae, HABs can cause serious health effects and even death. For example, eating seafood contaminated by toxins from algae called Alexandrium can lead to paralytic shellfish poisoning, which can cause paralysis and even death.
➢ The algae Pseudo-nitzschia produces a toxin called domoic acid that can cause vomiting, diarrhea, confusion, seizures, permanent short-term memory loss, or death when consumed at high levels.
- The terms alexandrium, microcystic and Pseudo-nitzschia are associated with :
Depending on the type of algae, HABs can cause serious health effects and even death. For example, eating seafood contaminated by toxins from algae called Alexandrium can lead to paralytic shellfish poisoning, which can cause paralysis and even death.
➢ The algae Pseudo-nitzschia produces a toxin called domoic acid that can cause vomiting, diarrhea, confusion, seizures, permanent short-term memory loss, or death when consumed at high levels.
- Eutrophication completely eliminates aquatic plant and animal production in Eutrophic lakes
Eventually, it leads to the death of all living organisms in the aquatic ecosystem. So, Statement 2 is correct.
biopiles vs bioreactors
Bio piles - are a hybrid of landfarming and composting. Essentially, engineered cells are
constructed as aerated composted piles, typically used to treat surface contamination with petroleum hydrocarbons. So, Statement 2 is not correct.
➢ Bioreactors involve the processing of contaminated solid material (soil, sediment, sludge) or water through an engineered containment system.
- With reference to bioleaching, consider the following statements :
- The natural process of interactions between microbes and minerals is known as biohydrometallurgy.
- While cobalt, copper, nickel and zinc can be extracted using bioleaching methods, gold and uranium cannot be extracted.
- When compared to the traditional smelting process, bioleaching turns out to be costlier.
- Traditional smelting process emits sulfur dioxide emissions, which are avoided entirely by bioleaching.
1 and 4 only
Metals extracted from bioleaching include:
➢ Gold
➢ Copper
➢ Silver
➢ Cobalt
➢ Uranium
➢ Zinc
➢ Nickel
Bioleaching is more cost-effective than smelting processes. So, Statement 3 is not correct.
➢ Some Bioleaching offers a different way to extract valuable metals from low-grade ores that have already been processed.
Which of the following has been used as bioweapons as per the UN ?
1. Anthrax
2. Smallpox
3. Plague
4. Foot and mouth disease
5. Glanders
1, 2, 3, 4 and 5
. Carbon footprint takes into account which of the following gases?
1. Carbon dioxide
2. Perfluorocarbons
3. Hydrofluorocarbons
4. Methane
5. Sulphur hexafluoride
6. Nitrous oxide
1, 2, 3, 4, 5 and 6 only
. With reference to volatile organic compounds (VOCs), consider the following statements :
1. They have low water solubility and low vapour pressure.
Volatile organic compounds are compounds have high vapor pressure and low water solubility.
VOCs are common ground-water contaminants.