GS3
Science & Technology
10 marks
What is cloud seeding? Discuss its potential role in addressing air pollution in cities like Delhi.
Cloud seeding is a weather modification technique aimed at enhancing precipitation by dispersing substances such as silver iodide, sodium chloride, or dry ice into clouds. These act as cloud condensation or ice nuclei, accelerating the formation of raindrops and inducing artificial rainfall. Recently, Delhi conducted a successful cloud seeding trial in collaboration with IIT Kanpur to explore its potential in combating severe air pollution.
While cloud seeding can act as a supplementary and short-term measure to reduce pollution levels in Delhi, it cannot replace comprehensive solutions. Long-term strategies such as emission control, renewable energy adoption, sustainable transport, and better waste management are essential for lasting improvement in air quality. Artificial rain, therefore, should be viewed as a temporary relief mechanism within a broader pollution-control framework.
GS1
Modern History
12 Dec, 2025
India is experiencing a paradox of rising food expenditure alongside declining nutritional quality. Discuss the key factors behind this trend and suggest policy measures to address the emerging nutrition crisis.
GS2
Governance
Yesterday
"Vande Mataram" has been a symbol of India’s freedom struggle and was adopted as the National Song in 1950 with only two stanzas. Discuss the historical significance of "Vande Mataram" in India’s nationalist movement and the rationale behind adopting only two stanzas officially. In your answer, also examine the relevance of the song in contemporary India.
GS2
Governance
10 Dec, 2025
“Beijing’s success in reducing air pollution offers important lessons for India’s fight against urban smog.” Discuss the key elements of Beijing’s approach and examine how these can be adapted to improve air quality in the National Capital Region (NCR).
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