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Construction of cavity walls as external walls to protect the building from the outside heat or cold as the hollow space between two walls act as an ________(a) Burning material(b) Insulating material(c) Destructive material(d) Building materialI have been asked this question by my school principal while I was bunking the class.This interesting question is from Components topic in division Important Building Components of Construction & Building Materials

Answer»

The correct choice is (b) INSULATING material

Explanation: Properly insulated building cuts down the cost of electric BURNING in summer as WELL as in winter. Cavity walls are one of the types of THERMAL insulation which consists of two walls with cavity in between them.



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