Phase System

Q.

What are the properties of alluvial soil?

Q. Consider the following statements:
1. Peat and muck are organic soils.
2. Peat is an inorganic soil where as muck is an organic soil.
3. Indurated clay is a type of clay which does not soften under prolonged wetting.

Which of the statement is/are correct?

1. 1, 2 and 3
2. 2 only
3. 3 only
4. 1 and 3 only

Q. Consider the following statement in the context of aeolian soils:

1. The soil has low density and low compressibility.
2. The soil is deposited by wind.
3. The soil has large permeability

Which of these statements are correct?

1. 1, 2 and 3
2. 2 and 3
3. 1 and 3
4. 1 and 2

Q. Which one of the following phase diagrams represents a clay at its shrinkage limit?

1. AIR

   WATER

   SOLIDS

2. WATER

   SOLIDS

3. AIR

   SOLIDS

4. WATER

   AIR

   SOLIDS

Q. Match List -I (Type of soil) with List -II (Mode of transportation and deposition) and select the correct answer using the codes given below the lists:

List -I
A. Lacustrine soils
B. Alluvial soils
C. Aeolian soils
D. Marine soils
Ists- II
1. Transportation by wind
2. Transportation by running water
3. Deposited at the bottom of lakes
4. Deposited in sea water

Codes

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

Q. Assertion (A): Black cotton soils are clays and they exhibit characteristic property of swelling.
Reason (R): These clays contain Montmorillonite which attracts external water into its lattice structure.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true but R is not a correct explanation of A
3. A is true but R is false
4. A is false but R is true

Q. The given figure indicate the weights of different pycnometers:

The specific gravity of the solids is given by

1. $\frac{W_2}{W_4-W_2}$

2. $\frac{W_1-W_2}{(W_3-W_4)-(W_2-W_1)}$

3. $\frac{W_2}{W_3-W_4}$
4. $\frac{W_2-W_1}{(W_2-W_1)-(W_3-W_4)}$

Q. Match List -I with List -II and select the correct answer using the codes given below the lists:

List -I List - II

A. Loess 1. Deposited from suspension in running water

B. Peat 2. Deposits of marine origin

C. Alluvial soil 3. Deposits by wind

D. Marl 4. Organic soil

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