Insulation of liquid surface can be achieved by _____________ on top of its surface?

Floating hollow polypropylene spheres

Insulation of liquid surface can be achieved by _____________ on top o

1.	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» B. Spraying alumina powder

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Insulation of liquid surface can be achieved by _____________ on top of its surface?

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