April 24, 2021 - Daily Quiz
1. With reference to the Black and Brown carbons, present in the atmosphere, consider the following statements:
- Black Carbon is emitted mainly by biomass combustion.
- Only black carbon is included as pollutant in the Air Quality Index (AQI).
Which of the Statements given above is/are correct?.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
2. "Conflict in Tigray region" - Headline news. This region is located in
(a) Crimea
(b) Ethiopia
(c) Brazil
(d) Vietnam
3. Tropical cyclone Seroja has hit the coast of
(a) Sri Lanka
(b) Mexico
(c) Sudan
(d) Australia
4. Which of the following is/are the significance of Thirty Meter Telescope?.
- To explore the mysterious period in the life of the universe when the first stars and galaxies were formed.
- To detect and investigate black holes.
Which of the Statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
5. With reference to the Brucellosis, consider the following statements:
- It is a fungal infection that spreads from animals to people.
- Signs and symptoms of brucellosis may include fever, joint pain and fatigue.
Which of the Statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Answers
1: (d) - https://www.thehindu.com/sci-tech/energy-and-environment/taj-the-pollutants-causing-discolouration-identified/article6701369.ece
Black Carbon (BC), emitted mainly by high-temperature combustion processes (diesel engines, etc.) and Brown Carbon (BrC), emitted mainly by biomass combustion are the two most important light absorbing substances in the atmospheric aerosol. Blue carbon is the carbon captured by the oceans and coastal ecosystems. Coastal vegetated landscapes, such as mangrove forests, salt marshes, and sea grass beds, are highly productive at sequestering carbon, storing it in above- and below-surface biomass such as stems, leaves, root material and sediments. Although these habitats cover less than 0.5% of the oceans’ seabed and shore areas, they are responsible for 50%-70% of all carbon absorbed by ocean sediments. Not only do ocean and coastal ecosystems store a lot of carbon, but they also do it quickly. Salt marshes, for example, have a carbon sequestration rate that is over 50 times faster than tropical rainforests. Blue carbon potential is thus a relevant means for controlling atmospheric greenhouse gas concentrations.
2: (b) - https://www.thehindu.com/opinion/op-ed/the-path-to-peace-in-ethiopia/article33974219.ece
3: (d) - https://www.thehindu.com/news/international/cyclone-destroys-houses-cuts-power-on-australias-west-coast/article34299230.ece
4: (c) - The Thirty Meter Telescope is a new class of extremely large telescopes that will allow us to see deeper into space and observe cosmic objects with unprecedented sensitivity. All of the given objectives can be served with it.
5: (b) - Brucellosis is a bacterial infection that spreads from animals to people. Most commonly, people are infected by eating raw or unpasteurized dairy products. Sometimes, the bacteria that cause brucellosis can spread through the air or through direct contact with infected animals. Signs and symptoms of brucellosis may include fever, joint pain and fatigue. The infection can usually be treated with antibiotics. However, treatment takes several weeks to months, and the infection can recur.
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