GEO TERMS: CLASSIFICATION OF SOIL

Question 1

for general engineering purposes, soils are classified by _____

A. particle size classification system
B. textural classification system
C. AASHTO
D. unified soil classification system

Answer 1

D. unified soil classification system

Question 2

soils containing organic matters _____

A. are of spongy nature
B. swell with decrease of moisture
C. shrink with increase of moisture content
D. none of these

Answer 2

A. are of spongy nature

Question 3

soil classification of composite soils, exclusively based on the particle size distribution is known _____

A. particle classification
B. textural classification
C. AASHTO classification
D. unified soil classification

Answer 3

B. textural classification

Question 4

maximum size of clay particles is _____

A. 0.002 mm
B. 0.04 mm
C. 0.06 mm
D. 0.08 mm

Answer 4

A. 0.002 mm

Question 5

pick up the correct statement from the following:

A. the object of classifying soils is to arrange them into groups according to their properties and behavior

B. a soil classification system is meant to provide an accepted and systematic method of describing
the various types of soils eliminating personal factors

C. the first category of soil classification is based on grain size of the soil

D. all the above

Answer 5

D. all the above

Question 6

the soil which contains finest grain particles is _____

A. coarse sand
B. fine sand
C. silt
D. clay

Answer 6

D. clay

Question 7

minimum size of the particles of silt soil is _____

A. 0.002 mm
B. 0.04 mm
C. 0.06 mm
D. 0.08 mm

Answer 7

A. 0.002 mm

Question 8

AASHTO classification of soils is based on _____

A. particle size composition
B. plasticity characteristics
C. both particle size composition and plasticity characteristics
D. none of the above

Answer 8

C. both particle size composition and plasticity characteristics