Day 29-Oct 17-Worksheet-Btech-Particle size analysis

According to Stokes’ law, the terminal velocity of a soil particle during sedimentation is proportional to —

In hydrometer test, effective depth (He) is constant with time.

Stokes’ law becomes invalid when particle size < 0.2 micron due to Brownian movement.

Assertion (A): Stokes’ law can be applied to all sizes of soil particles. Reason (R): Because terminal velocity is independent of particle size.

The finest sieve used in dry sieve analysis = (a)   sieve.

According to Stokes’ law, at…………. the upward forces are equal to the downward force of gravity.

(a)  

The dispersing agent used in sedimentation analysis is __________ gm of ___ + __________ gm of ______ per litre of water.

(a)  

Match the following

In hydrometer analysis, the effective depth (He) is measured as the distance between —

(a)  

A soil has more than 50 % passing 75 µm sieve. According to the Indian Standard Classification System (IS 1498), it is classified as —

(a)