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Q3132/80Q33
Q32·CSAT · Prelims 2023

Waste-to-energy - crux

Reading Comp.Environment / Governance passageRC - Central ideaMedium

Question

Which one of the following statements best reflects the crux of the passage?

Options

a

Generation of energy from municipal solid waste is inexpensive.

b

Biomethanation is the most ideal way of generating energy from municipal solid waste.

c

Segregation of municipal solid waste is the first step in ensuring the success of waste-to-energy plants.

Answer
d

The biodegradable component of India's municipal solid waste is not adequate to provide energy from waste efficiently/effectively.

Explanation

The passage outlines the structural workflow of waste processing, noting that waste-to-energy plants fit sequentially "after segregation". The selection of appropriate conversion tech depends on isolating the raw material properties (biodegradable fractions vs. calorific value). Because these industrial processors rely entirely on uniform compositions to work, sorting the waste at source is the foundational precondition for the plant's operational success[cite: 3407, 3408]. Option (c) reflects this core dependency. Option (b) is a partial trap that over-generalizes the concluding sentence on biomethanation, while options (a) and (d) directly distort cost and volume metrics.

When an engineering or ecological workflow emphasizes sequential processing dependencies, the functional gatekeeper stage (like segregation) constitutes the critical crux.

Answer: (c).

Question details

Year

2023

Paper

CSAT

Question

Q32

Section

Reading Comprehension

Sub-topic

Environment / Governance passage

Type

RC - Central idea

Difficulty

Medium

Source hint

Passage-based comprehension

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