Question

Mineral Colemanite is a source of which nutrient of plant:

• A. B
• B. Mo
• C. Ni
• D. Cu

Hint:

Boron sources:
- Colemanite: CaB3O4(OH)3·H2O
- Borax: Na2B4O7·10H2O
- Kernite: Na2B4O7·4H2O
Boron is essential for: Cell wall formation, pollen germination, carbohydrate transport.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This question tests knowledge of mineral sources of plant nutrients.

Step 2: Detailed Explanation:
Colemanite is a borate mineral with the chemical formula CaB3O4(OH)3·H2O.
It is an important source of boron (B) for plants.
Boron is an essential micronutrient.
Other mineral sources:
- Molybdenum (Mo): Molybdenite, wulfenite.
- Nickel (Ni): Not a common mineral source.
- Copper (Cu): Chalcopyrite, malachite.
Thus, colemanite is a source of boron.

Step 3: Final Answer:
Thus, mineral colemanite is a source of boron.
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