Building Materials
Smith's test of stones is performed to find out

The presence of soluble matter of stone
The hardness of the stone
The toughness of the stone
The compressive strength of the stone

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Building Materials
The thermosetting plastic

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

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