Question

38) Basic nucleus of theophyllin is- Imidazole O Thiophene Oxazole O Pyrazzole O All of the above​

Answer 1

Fertilizers play an important role for soil health: they supplement the natural supply of soil nutrients, build up soil fertility in order to satisfy the demand of crops with a high yield potential and compensate for the nutrients taken by harvested products or lost by unavoidable leakages to the environment, in order ...

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