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NPK in fertilisers stands for nitrogen, phosphorus and:

APlatinum
BPlutonium
CPotassium
DPhosphate
Answer & Solution
Correct answer: C. Potassium
1. These are the main plant nutrients. 2. K stands for potassium. 3. Manure is relatively less rich in them. _Source: syllabus Science, Chapter 1, Crop Production and Management._
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