Building Materials
The rocks which are formed due to pouring of magma at the earth's surface are called

Igneous rocks
Volcanic rocks
Hypabyssal rocks
Plutonic rocks

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Building Materials
The thermosetting plastic

At 127°C to 177°C permanently set and further application of heat does not soften it
Becomes rigid when moulded at suitable pressure and temperature
All listed here
Chars at 343°C

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