Paper 1 · People, Development and Environment
UGC NET December 2023 (11.12.2023) Shift-I
Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below.
- Statement I: Composting is aerobic degradation of organic materials under controlled conditions, yielding a marketable manure.
- Statement II: In such composts, the concentrations of key nutrients such as nitrogen, phosphorus and potassium are sufficient to compete with commercial fertilizers.
ABoth Statement I and Statement II are correct
BBoth Statement I and Statement II are incorrect
CStatement I is correct but Statement II is incorrect ✓ Correct
DStatement I is incorrect but Statement II is correct
Correct answer: (C) Statement I is correct but Statement II is incorrect — Statement I is correct but Statement II is incorrect, so that is the answer.
Explanation
★Statement I is correct but Statement II is incorrect, so that is the answer.
★Composting breaks down organic matter with oxygen under controlled conditions.
★It yields a stable, marketable manure, so Statement I is correct.
★Compost does supply nitrogen, phosphorus and potassium to the soil.
★But these nutrient concentrations are too low to compete with commercial fertilizers.
★So the claim that they are sufficient to compete is wrong, making Statement II incorrect.
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