# Civil Engineering - Soil Mechanics and Foundation Engineering

### Exercise :: Soil Mechanics and Foundation Engineering - Section 5

36.

The specific gravity of Calcite is

 A. 2.65 B. 2.72 C. 2.85 D. 2.9

Explanation:

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37.

The ratio of volume of air voids to the volume of total voids, is known as

 A. air content B. percentage air voids C. percentage voids D. porosity.

Explanation:

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38.

A plane inclined at an angle φ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as

 A. natural slope line B. repose line C. the φ line D. all the above.

Explanation:

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39.

Tergazhi's theory of one dimensional consolidation assumes

 A. load is applied in one direction B. coefficient of permeability is constant C. excess pore water drains out only in the vertical direction D. time lag in consolidation is due entirely to permeability E. all the above.

Explanation:

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40.

Pick up the correct statement from the following:

 A. The dry density reduces by addition of water after attaining optimum moisture content B. The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus C. Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils D. All the above. .