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UPSC Prelims 2019 Paper-1 📅 02 Jun, 2019

Consider the following statements:
1. Agricultural soils release nitrogen oxides into environment.
2. Cattle release ammonia into environment.
3. Poultry industry releases reactive nitrogen compounds into environment.

Which of the statements given above is/are correct?

A
1 and 3 only
B
2 and 3 only
C
2 only
D
1, 2 and 3
Result Summary
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UPSC Prelims
2019 • 02 Jun, 2019 • Paper-1
Consider the following statements:
1. Agricultural soils release nitrogen oxides into environment.
2. Cattle release ammonia into environment.
3. Poultry industry releases reactive nitrogen compounds into environment.

Which of the statements given above is/are correct?
Correct Answer
1, 2 and 3
Statement 1 Analysis: This is correct. The extensive use of synthetic nitrogenous fertilizers in agricultural soils results in the emission of nitrous oxide (a ......
Ref/Book : UPSC Prelims 2019
Ref. Subject Environment
Chapter -
Ref. Topic Pollution
Pg. No -
💡 Analysis & Explanation
Statement 1 Analysis ▼
This is correct. The extensive use of synthetic nitrogenous fertilizers in agricultural soils results in the emission of nitrous oxide (a potent greenhouse gas) and other nitrogen oxides into the atmosphere through microbial processes like nitrification and denitrification.
Statement 2 Analysis ▼
This is correct. Cattle and other livestock are major contributors to ammonia emissions, primarily originating from the microbial breakdown of urea present in their manure and urine.
Statement 3 Analysis ▼
This is correct. The poultry industry is a significant source of reactive nitrogen compounds, as poultry litter and waste are rich in nitrogen, which volatilizes and enters the environment.
Conclusion ▼
All three statements accurately identify major agricultural sources of nitrogenous emissions, making option D correct.
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