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Prelims -Environment

Question:e-Shakti is a pilot project of -View

(a) NABARD

(b) NITI Aayog

(c) RBI

(d) National Commission for Women

Check Answer:

Answer:
Explanation

• e-Shakti is a pilot project of National Bank for Agriculture and Rural Development (NABARD) for digitisation of Self Help Groups (SHGs). • It is an initiative of Micro Credit and Innovations Department of NABARD. • It was initiated to address certain concerns like improving the quality of book keeping of SHGs and to enable banks to take informed credit decisions about the group through a Management Information System (MIS).

Question:When the two ecosystems overlap each other, the area is called -View

(a) Habitat

(b) Niche

(c) Ecotone

(d) Ecotype

Check Answer:

Answer:
Explanation

• An ecotone is a zone of junction or a transition area between two biomes [diverse ecosystems]. It is where two communities meet and integrate. • For e.g. the mangrove forests represent an ecotone between marine and terrestrial ecosystem. Other examples are grassland (between forest and desert), estuary (between fresh water and salt water) and river bank or marsh land (between dry and wet).

Question:Viral protein called DIII plays a key role to infect people with -View

(a) Zika virus

(b) Ebola Virus

(c) Dengue

(d) Chikungunya

Check Answer:

Answer: Zika Virus
Explanation

The vaccine developed by researchers from Arizona State University (ASU) in the U.S. works against a part of a Zika viral protein, called DIII, that plays a key role for the virus to infect people. http://www.thehindu.com/sci-tech/health/more-potent-safer-zika-vaccine-developed/article19479682.ece

Question:Acid rain is caused by 1. NO2 2. SO2 3. SO3 -View

(a) Only 2 & 3

(b) Only 2

(c) Only 1 & 2

(d) 1, 2 & 3

Check Answer:

Answer: Only 2
Explanation

• Sulfur dioxide and nitrogen oxides are two of the gases involved in the creation of acid rain. When these gases are released into the environment and mixed with water, oxygen, and other chemicals, they create acidic compounds, such as sulfuric acid and nitric acid, which results in the formation of acid rain. • Nitric oxide (NO), which also contributes to the natural acidity of rainwater, is formed during lightning storms by the reaction of nitrogen and oxygen, two common atmospheric gases. In air, NO is oxidized to nitrogen dioxide (NO2), which in turn reacts with water to give nitric acid (HNO3) . This acid dissociates in water to yield hydrogen ions and nitrate ions (NO3-) in a reaction analagous to the dissociation of carbonic acid, again lowering the pH of the solution.