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A fine grained soil has liquid limit of 60 and plastic limit of 20. As per the plasticity
chart the soil is
A) ML B) CH Cc) CL D) MI

A clay sample of 10 mm thick requires 10 minutes for 50% consolidation. What will be
the time required for 50% consolidation if the thickness of clay layer is 1 m at site ?
A) 10° minutes B) 10* minutes 0) 10° minutes D) 10° minutes

Permeability of soil is directly proportional to
^) © ‏رم‎ 2 ௦) 1/6 0) €

What will be the effective stress at a depth of 5 m below a clay layer of saturated
unit weight of 20 ۸۷۷۰۸1۶

A) 100 kN/m? B) 50 kN/m? C) 75 kN/m? D) 25 kN/m?
On which type of soil wash boring is not applicable

A) Cohesive soil B) Cohesion less soil

C) Soil with gravel and boulders D) All the above

The degree of disturbance of a cohesive sample can be estimated by

A) Recovery ratio B) Void ratio

C) Consolidation ratio D) Over consolidation ratio

Disturbed samples can generally be used for
A) Consolidation test B) Specific gravity test
C) Permeability test D) Shear strength test

An unsupported excavation is to be made in clay layer with unit weight of 20 ധന്‌
and C = 40 kN/m?. The depth of tension crack will be
A) 8m B) 2m Cc) 4m D) 6m

For a saturated normally consolidated clay specimen the pore pressure coefficient
Bwill be
A) 1.0 B) 0.8 C) 0.2 0) - 0.5

The ratio of unconfined compressive strength of an undisturbed sample of soil to
that of a remoulded sample, at the same water content is known as
A) Activity B) Damping C) Plasticity D) Sensitivity

Transition curves are provided in highways to
A) Introduce super elevation gradually

B) Introduce extra widening gradually

C) Improve design speed on horizontal curves
D) All the above

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