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

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
by

1 Answer

Answer :

(A) Floating hollow polypropylene spheres
by

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