Q.

Dust materiales are use as..?

A. Soluble powders are used as soil surface protective material.
B. Soluble powders are used as plant surface protective material.
C. Insoluble powders are used as soil surface protective material.
D. Insoluble powders are used as plant surface protective material.
Answer» D. Insoluble powders are used as plant surface protective material.
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