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 ________ - PrepBharat

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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 material

Answer: b
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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