Question

Water present in the form of hydrated oxides of silicon and aluminium in soil is called ________ water.

• A. gravitational
• B. capillary
• C. hygroscopic
• D. combined

Hint:

{Combined water is chemically bound and unavailable to plants}.

Answer 1

The Correct Option is D

Step 1: Understanding soil water types.
Soil water exists in different forms depending on how tightly it is held by soil particles.

Step 2: Identifying combined water.
Combined water is chemically bound with soil minerals such as hydrated oxides of silicon and aluminium and is not available to plants.

Step 3: Conclusion.
Hence, the correct answer is combined water.