Question

Which one of the following nutrients is not available in fertilizers?

• A. Nitrogen
• B. Phosphorus
• C. Iron
• D. Potassium

Answer 1

The correct option is C

Iron

The correct option is C

Explanation for the correct answer:

1. Iron is not available in fertilizers
2. Iron is a very important micronutrient and is required in small amounts by plants.
3. Plants generally get iron from the soil and as it is required in a very small amount so it is not generally present in fertilizers.

Explanation for the incorrect option:

1. Nitrogen, phosphorus, and potassium are macronutrients and are required by the plants in a large amount.
2. They are present in fertilizers like NPK as main constituents.

Final answer: Iron is not available in fertilizers.