Environment & Ecology · Environmental Science
Arrange the following historical developments related to fly ash management in India in the correct chronological order: 1. First official Notification on Fly Ash Utilization issued by the Ministry of Environment and Forests. 2. Standard specifications issued for fly ash utilization in Portland Pozzolana Cement. 3. Rapid growth of coal-based thermal power plants leading to significant fly ash generation. 4. Large-scale integration and recognition of fly ash utilization in geotechnical engineering and embankments.
- 13 → 1 → 2 → 4✓
- 23 → 4 → 1 → 2
- 31 → 3 → 4 → 2
- 42 → 3 → 1 → 4
Correct answer
3 → 1 → 2 → 4
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