Question

Deficiency of which nutrient is described as the 'key of life' since its absence alone can halt the plant's life cycle?

A Nitrogen
B Phosphorus
C Potassium
D Calcium
E Magnesium
Practice Next

Hey! Ask a query

🎓
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
  • 200 Questions with Detailed Solutions
  • Section-wise Coverage (GA, English, Quant & Reasoning)