Soil Mechanics MCQs | Soil Mechanics Multiple Choice Questions with Answers

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Questions
61 If the voids of a soil mass are full of air only, the soil is termed as
A air entrained soil
B partially saturated soil
C dry soil
D dehydrated soil

Answer: dry soil
62 Voids ratio of a soil mass can
A never be greater than unity
B be zero
C take any value greater than zero
D take values between 0 and 1 only

Answer: take any value greater than zero
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63 For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass ?
A oven drying method
B sand bath method
C alcohol method
D calcium carbide method

Answer: calcium carbide method
64 A pycnometer is used to determine
A water content and voids ratio
B specific gravity and dry density
C water content and specific gravity
D voids ratio and dry density

Answer: water content and specific gravity
65 Which of the following is a measure of particle size range ?
A effective size
B uniformity coefficient
C coefficient of curvature
D none of the above

Answer: uniformity coefficient
66 If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in
A liquid state
B plastic state
C semi-solid state
D solid state

Answer: plastic state
67 The water content of soil, which represents the boundary between plastic state and liquid state, is known as
A liquid limit
B plastic limit
C shrinkage limit
D plasticity index

Answer: liquid limit
68 If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then
A the liquid limit of soil always increases
B the liquid limit of soil always decreases
C the liquid limit of soil may increase
D the liquid limit of soil may decrease

Answer: the liquid limit of soil always increases
69 According to IS classification, the range of silt size particles is
A 0.075 mm to 0.002 mm
B 4.75 mm to 2.00 mm
C 2.00 mm to 0.425 mm
D 0.425 mm to 0.075 mm

Answer: 0.075 mm to 0.002 mm
70 The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively
A zero and zero
B 0.5 kg/cm2 and zero
C 0.5 kg/cm2 and 0.5 kg/cm2
D 1.0 kg/cm2 and 0.5 kg/cm2

Answer: 0.5 kg/cm2 and zero

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