Question

Match List-I (Measuring device) with List-II (Soil
parameter) and select the correct answer using
the codes given below the lists:
List-I List-II
A. Pycnometer 1 . Compressibility
B. Hydrometer 2. Permeability
C. Oedometer 3. Specific gravity
D. Permeameter 4. Particle size analysis
Codes:
A B C D

• A. 2 4 1 3
• B. 3 1 4 3
• C. 2 1 4 3
• D. 3 4 1 2

Answer 1

The correct option is D 3 4 1 2

(d)
The Pycnometer is used for determination of both the specific gravity of soil particles and water content of soil. The specific gravity of soil is determined using the relation:

$G=\frac{M_2-M_1}{(M_2-M_1)-(M_3-M_4)}$

Water content is determined by using the relation

$W=[\frac{(M_2-M_1)}{(M_3-M_4)}\times \left(\frac{G-1}{G}\right)-1]\times 100$

Where $M_1$ = mass of empty Pycnometer,
$M_2$ = mass of the Pycnometer with dry soil
$M_3$ = mass of the Pycnometer and soil and water
$M_4$ = mass of Pycnometer filled with water only.
G = Specific gravity of soils.
Hydrometer method is used to determine the particle size distribution of fine-grained soils passing 75 μ sieve. The hydrometer measures the specific gravity of the soil suspension at the Centre of its bulb. The specific gravity depends upon the mass of solids present. which in turn depends upon the particle size.
An oedometer test is a test that measures a soil's consolidation properties. Oedometer tests are performed by applying different loads to a soil sample and measuring the deformation response. The results from these tests are used to predict how a soil in the field will deform in response to a change in effective stress.
The constant head permeameter is a test used to measure the permeability where in the head causing flow through the specimen remains constant throughout the test.