UPSC Necessities | Each day quiz by topic — Surroundings, geography, science and know-how (week 23) | UPSC Information

QUESTION 1

Concerning desalination vegetation, take into account the next statements:

1. The know-how used within the course of is pure osmosis.

2. The price of establishing and working a desalination plant could be very low.

3. Desalination is extensively practiced in Center Japanese nations.

How most of the above statements are right?

(a) Just one

(b) Solely two

(c) The three

(d) None

QUESTION 2

In reference to the Superior Liquid Processing System (AEPS), take into account the next statements:

1. It’s a filtration system used to deal with radioactive water.

2. It could take away all radioactive contaminants from water besides deuterium.

Which of the above statements are right?

(a) 1 solely

(b) 2 solely

(c) 1 and a couple of

(d) Neither 1 nor 2

QUESTION 3

Take into account the next statements concerning Indian squirrels: (PYQ 2023)

1. They construct nests by digging burrows within the floor.

2. They retailer their meals supplies like nuts and seeds within the soil.

3. They’re omnivorous.

How most of the above statements are right?

(a) Just one

(b) Solely two

(c) The three

(d) None

QUESTION 4

Take into account the next pairs:

How most of the pairs given above match appropriately?

(a) Just one

(b) Solely two

(c) Solely three

(d) The 4

QUESTION 5

Take into account the next:

1. Carbon seize and storage

2. Modification of photo voltaic radiation

3. Ecosystem-based mitigation

How most of the above approaches can remove extreme greenhouse gases within the environment?

(a) Just one

(b) Solely two

(c) The three

(d) None

ANSWERS TO MCQS

1.(a)

FOR YOUR INFORMATION:

— A desalination plant converts salt water into ingesting water. These factories are usually positioned in areas the place there’s entry to sea water.

— Essentially the most typically used technique for the method is reverse osmosiswhich makes use of exterior strain to drive solvents from an space of ​​excessive solute focus to an space of ​​low solute focus throughout a membrane. Subsequently, assertion 1 isn’t right.

— The microscopic pores within the membranes permit water molecules to move via however depart salt and most different impurities behind, releasing clear water on the opposite aspect.

— Desalination has largely restricted to rich Center Japanese nations and has not too long ago begun to make inroads in components of america and Australia. Subsequently, assertion 3 is right.

— In India, Tamil Nadu pioneered the usage of this know-how, establishing two desalination vegetation close to Chennai in 2010 then 2013.

— Desalination is a costly technique to produce ingesting water as a result of it requires a considerable amount of vitality. The opposite drawback is the elimination of the byproduct – the extremely concentrated brine – from the desalination course of. Assertion 2 is due to this fact not right.

Subsequently, choice (a) is the proper reply.

2.(b)

FOR YOUR INFORMATION:

— A number of reactors on the nuclear plant melted after the 2011 earthquake and tsunami. Since then, employees on the now-defunct plant have cooled the reactors utilizing water, which turns into contaminated.

— Japan makes use of a filtration system referred to as the Superior Liquid Dealing with System (ALPS) which might take away all radioactive contaminants from water besides tritium. Subsequently, assertion 1 is right.

— Tritium is a type of hydrogen that happens naturally within the Earth’s environment and is a part of water itself. It’s due to this fact not attainable to create a filter to separate it from contaminated water. Assertion 2 is due to this fact not right.

— In keeping with Tokyo Electrical Energy Firm Holdings (TEPCO), to treatment the scenario, it’ll dilute the contaminated water with seawater to make sure that tritium focus ranges are nicely beneath security requirements.

Subsequently, choice (b) is the proper reply.

3.(a)

FOR YOUR INFORMATION:

— The Indian palm squirrel or three-striped palm squirrel (Funambulus palmarum) is a species of rodent within the household Sciuridae which incorporates small to medium-sized rodents discovered naturally in India.

— The Indian palm squirrel is a really adaptable species. It’s energetic through the day (diurnal animal) and semi-arboreal.

— The Indian palm squirrel is an omnivore. Subsequently, assertion 3 is right.

— Indian palm squirrels construct nests within the tops of timber utilizing grass and branches. Subsequently, assertion 1 isn’t right.

— Its weight loss program consists primarily of fruits and nuts, but it surely additionally consumes eggs, small birds, larvae and bugs.

— The Indian squirrel scavenges meals and aggressively protects its hiding locations from different squirrels and birds. These squirrels retailer meals within the tops of timber. Assertion 2 is due to this fact not right.

Subsequently, choice (a) is the proper reply

(Different supply: dste.py.gov.in)

4.(a)

FOR YOUR INFORMATION:

— Earth is the one planet with an setting appropriate for human life. World Surroundings Day is noticed yearly on June 5 to commemorate the sacred purpose of environmental safety.

— Environmental Conservation is crucial to the existence of human civilization. Mass afforestation, eco-friendly existence and the promotion of inexperienced applied sciences and procedures all must be critically thought of so as to reduce carbon emissions.

— There are numerous international conventions and treaties:

Subsequently, choice (a) is the proper reply.

5.(b)

FOR YOUR INFORMATION:

— Geoengineering and nature-based options have emerged as potential choices for offsetting the worldwide impacts of local weather change and assembly temperature objectives.

— Geoengineering options is an umbrella time period for human interventions aimed toward modifying local weather programs. The IPCC talks about two main geoengineering approaches to eradicating extra greenhouse gases from the environment.

Elimination of carbon dioxide and modification of photo voltaic radiation

— The carbon dioxide elimination method focuses on eradicating greenhouse gases from the environment and lock them up. This may be achieved via carbon seize and storage applied sciences (CSC). So 1 is right.

— Altering photo voltaic radiation doesn’t have an effect on atmospheric greenhouse gases however goals to replicate the photo voltaic radiation arriving on the earth. So 2 isn’t right.

— Eradicating the radiation change as a result of thermal inertia of the local weather system may lead to very fast temperature escalation, giving a lot much less time to adapt.

— Photo voltaic radiation also can have an effect on pure vegetation.

Nature-based answer

— It’s a generic time period used for a number of options corresponding to inexperienced infrastructure, pure infrastructure, ecological engineering, ecosystem-based mitigationecosystem-based adaptation and ecosystem-based catastrophe danger discount.

— Pure programs have performed a important position in sequestering extra carbon dioxide within the environment via a easy however miraculous course of referred to as photosynthesis. So 3 is right.

Subsequently, choice (b) is the proper reply.

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