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Question
Following stone is suitable for damp proofing. 
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A.
Slate
B.
Marble
C.
Laterite
D.
Granite
Answer ( Option A)

Slate

Solution

Damp Proofing: Damp proofing in construction is a type of moisture control technique applied to building walls, floors and roofs to prevent moisture from passing into the interior space by using damp proofing materials.
Damp Proofing Materials:
1. Flexible material like butyl rubber, hot bitumen, plastic sheets etc.
2. Semirigid materials like mastic asphalt.
3. Rigid materials, like impervious bricks stones, slates, cement mortar, or cement concrete painted with bitumen.
Note: 

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