Building Materials
Index number expressing the relative sizes of both coarse and fine aggregates, is called

Proportioning of aggregates
Grading of aggregates
Fineness modulus
None of these

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Building Materials
The thermosetting plastic

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

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