Building Materials
Rocks formed due to alteration of original structure due to heat and excessive pressure are called

Metamorphic rocks
Sedimentary rocks
Igneous rocks
None of these

ANSWER DOWNLOAD EXAMIANS APP

Building Materials
Asbestos

Contains iron oxide and alumina
All of these
Is a natural fibrous mineral substance
Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)

ANSWER DOWNLOAD EXAMIANS APP