Soil Mechanics and Foundation Engineering - Engineering
Q1: Pick up the correct statement from the following:A
A soil having pH value more than 7 is an acidic soil
B
A soil having pH value less than 7 is an acidic soil
C
A soil having pH value more than 7 is an alkaline soil
D
A soil containing chemicals for the manufacture of portland cement is preferred.
ANS:B - A soil having pH value less than 7 is an acidic soil Alkaline soils are characterized by elevated concentrations of exchangeable sodium ion (>15%), free carbonate and bicarbonate, low calcium, high pH value (8.5-10).
The pH value from 7.0 to 7.5 is considered neutral. pH value over 7.5 is alkaline. |
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