Hydrometer - Sieve Analysis

The size range of silty soil is

• 4.75mm to 75 micron

• Less than 75 micron

• Less than 2 micron

• Between 75 micron and 2 micron

The aggregate sample for the sieve analysis is placed on

• Smallest sieve

• Largest sieve

• Pan

• None of the above

Under what circumstance is a wet sieve analysis carried out?

• Sample is washed

• Moisture content is high in sample

• Sample contains organic matter

• Sample contains significant amount of fine

A narrow gradation is also called:

• Gap gradation

• Uniform gradation

• Rich gradation

• Open gradation

Which among the following is/are the applications of grain size distribution curve?

• Design of filters

• Design of earth dams

• Design of pavements

• Design of stone columns

-------------- is called as effective particle size

• D₆₀

• D₁₀

• D₃₀

• D₆₀/D₁₀

The range of C_c for a well graded gravel/sand

• Greater than 6

• Greater than 4

• Between 4 and 6

• Between 1 and 3

Which among the following curves represent a gap graded soil

• A

• B

• C

• None of the above

Why is dispersing agent added to the soil suspension during hydrometer analysis

• To make a uniform solution

• To prevent flocculation

• To get better results

• All the above

What is the nature of meniscus corretion

• Negative

• Positive

• Positive or negative