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Chapter 3

Macroeconomics  /  Sustainable development and inclusive growth

Module 17: Circular Economy & Resource Efficiency

NITI Aayog and the SDG scoreboards, then the ideas under them: limits, the Kuznets curve, the circular economy, and human capital.

TopicPart 1 of 4

Subtopic 17.1: Principles of Closed-Loop Economic Systems

The emission cut is the consequence. The cause is less extraction and less waste.

Starting point

A linear economy takes, makes and dumps. A circular economy designs the loop shut: products last longer, are repaired, reused and recycled, and the waste of one process feeds another. Statement II says this reduces the use of raw materials as inputs. Statement III says it reduces wastage in the production process. Both are true. Statement I says the circular economy reduces greenhouse-gas emissions. The IAS 2025 key says II and III are correct and both of them explain I. Less mining, less primary smelting and less waste to process means less energy and less process emission. The emissions fall because the material loop tightened, not because a circular label was printed on the packet.

The explanation is the point of the item. It is not enough to say all three are true. The keyed structure is that the material statements explain the emissions statement.

  1. Define circular against linear: loop versus take-make-dump.
  2. Statement II: fewer raw-material inputs.
  3. Statement III: less wastage in production.
  4. Statement I follows: fewer emissions, because extraction and waste are emission-heavy.
  5. Mark II and III as the explanation of I.
Worked example. Making aluminium from scrap uses far less energy than making it from bauxite. A firm that designs a bottle to be refilled buys less new plastic and scraps less in the plant. Both the mine and the reject pile shrink, and the fuel burned at each shrinks with them. That is II and III causing I. A firm that calls itself circular and still raises virgin extraction has not earned statement I.
Memory hook. Less material and less waste explain the lower emissions. The key is II and III explain I.

Further explanation

Circularity is not automatically carbon-neutral. Recycling has its own energy cost, and a rebound effect can raise consumption of a now-cheaper recycled good. The item’s logic still holds as a ceteris paribus claim: holding the service constant, less primary material and less process waste reduce emissions. Life-cycle assessment is how you check a particular product rather than the slogan.

The policy set includes extended producer responsibility, repair rights and industrial symbiosis. Those are the instruments. The item is the causal chain.

Figure

Why the loop cuts emissions

  1. 1IIFewer raw materials enter as inputs.
  2. 2IIILess material is wasted in production.
  3. 3IGreenhouse-gas emissions fall, because extraction and waste processing are carbon-intensive.
The IAS 2025 key: statements II and III explain statement I.

Concept

Original notes

Subtopic 17.1: Principles of Closed-Loop Economic Systems

A Circular Economy is an industrial and economic model designed to be restorative and regenerative by intention. It replaces the traditional linear economic paradigm of \"take → make → consume → dispose\" with a closed loop of \"reduce → reuse → repair → recycle → regenerate.\"

As documented in studies by the Ellen MacArthur Foundation and UNEP:

  • Mitigating Climate Change (Statement I): Over 45% of global GHG emissions arise from product manufacturing, materials extraction, and land management. Shifting to circular models significantly reduces industrial emissions.
  • Decreasing Virgin Inputs (Statement II): Reusing existing components and recycling materials minimizes the need for extracting new raw materials.
  • Eliminating Production Waste (Statement III): Designing out waste and keeping materials at highest utility prevents industrial byproduct loss.
  • Causal Relationship: Both Statement II (reducing raw material extraction) and Statement III (eliminating manufacturing waste) directly explain why circular economy practices decrease greenhouse gas emissions (Statement I).

Important points

  • Circular economy reduces raw material demand and minimizes industrial waste.
  • Lower material extraction and closed production loops directly drive reductions in GHG emissions.
Topic
Questions

MCQs

Choose one option, then the next question.

Original question

Question 37: Consider the following statements:
Statement I: Circular economy reduces the emissions of greenhouse gases.
Statement II: Circular economy reduces the use of raw materials as inputs.
Statement III: Circular economy reduces wastage in the production process.
Which one of the following is correct in respect of the above statements? [I.A.S. (Pre) 2025]

According to international climate reports, reducing raw material extraction (Statement II) and minimizing process wastage (Statement III) are direct drivers that reduce industrial GHG emissions (Statement I).

Added question

In the circular-economy item, lower emissions are explained by:

Statements on raw materials and wastage are what the key uses to explain the fall in emissions.

Question 1 of 2
TopicPart 1 of 3

Strategies for sustainable development (NCERT Class 11)

Wind and solar, mini-hydel, traditional knowledge, biopest, and organic farming. Use the resource again, or use a resource that renews.

Starting point

NCERT Class 11 does not stop at the definition. It lists strategies that use resources without exhausting them. Non-conventional energy, such as wind and solar, replaces a part of fossil fuel. Mini-hydel plants serve local needs. Traditional knowledge and biocomposting or biopest control reduce chemical load. Organic farming avoids synthetic fertiliser and pesticide.

These strategies keep materials and soil fertility inside the production loop instead of extracting, using once, and discarding. That is the point of contact with a circular economy: value stays in use. The NCERT list is the one to write in an answer, even when the question uses the later phrase resource efficiency.

  1. Pick two strategies from the NCERT list and say which stock they spare.
  2. Name organic farming as a named strategy, not as a slogan.
  3. Connect the strategy to a limit: fuel, soil, or local energy.
Worked example. A village plant that runs on local agricultural waste replaces diesel for a pump. The waste, which would have been discarded, stays inside the local economy. Soil that receives compost rather than only synthetic fertiliser is the same idea applied to fertility.
Memory hook. Wind and solar, mini-hydel, traditional knowledge, biopest, and organic farming. Use the resource again, or use a resource that renews.

Further explanation

The chapter also mentions cleaner use of conventional resources and public transport. The exam favourites are non-conventional energy and organic farming.

Important points

  • Non-conventional energy includes wind and solar.
  • Mini-hydel plants are a local renewable strategy.
  • Organic farming and biopest control reduce chemical pressure on soil.
  • Traditional knowledge is treated as a resource, not as a leftover.
Topic
Questions

MCQs

Choose one option, then the next question.

Added question

Which pair is named in NCERT Class 11 among strategies for sustainable development?

Non-conventional energy and organic farming are in the Class 11 list. The other pairs belong to other chapters.

Question 1 of 1
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