The basic sp. gr. of woods is commonly b/w 0.35 and 0.60, but can chan – McqOptions

MCQOPTIONS

1.	The basic sp. gr. of woods is commonly b/w 0.35 and 0.60, but can change from 0.2 – 0.7.
A.	a)True
B.	b)False
Answer» B.

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A sample of wet Douglas-fir wood 20 mm thick, 50 mm wide and 10 cm long weighs 90.21 g. It is then dried at 105°Celcius to constant weight and re-weighed after cooling in a desiccator. The oven-dry weight is 44.37 g. What are the MCGR, MCQD, and basic specific gravity of the wood sample?
After converting 20% MCQD to MCQR the value would be _________
The _________of wood’s a measure of the H2O content relative to either the total wet weight of material or to the weight of oven dried wood material.
The viscosity of a material’s defined as the mass/unit volume.
The basic sp. gr. of woods is commonly b/w 0.35 and 0.60, but can change from 0.2 – 0.7.
The specific gravity (specific gravity) of wood’s the oven-dry weight of wood divided by the weight of _________ of H2O.