Insulation of liquid surface can be achieved by __________ on top of its surface.

– by
Question: Insulation of liquid surface can be achieved by __________ on top of its surface.
[A].

floating hollow polypropylene spheres

[B].

spraying alumina powder

[C].

putting cement

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.