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Question
Fineness of cement is measured in the units of 
A.
Volume/mass
B.
Mass/volume
C.
Area/mass
D.
Mass/area
Answer ( Option C)

Area/mass

Solution

Fineness of cement is measured in terms of its specific surface area (i.e. surface area per unit mass)
Note:
There are 3 methods for testing fineness
• Sieve method or particle size distribution
• Sedimentation method
• Air permeability method

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