# Practice Test: Question Set - 24

**1. Which of the following soils has more plasticity index?**

- (A) Sand

- (B) Silt

- (C) Clay

- (D) Gravel

**2. The liquid limit and plastic limit exist in**

- (A) Sandy soils

- (B) Silty soils

- (C) Gravel soils

- (D) Clay soils

**3. For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is**

- (A) 15 %

- (B) 18 %

- (C) 20 %

- (D) 25 %

**4. For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co-efficiency of permeability of the dam material is 3 × 10**

^{-3}cm^{3}/sec, the discharge per metre length of dam, is- (A) 12 × 10

^{-5}m

^{3}/sec

- (B) 24 × 10

^{-3}m

^{3}/sec

- (C) 6 × 10

^{-5}m

^{3}/sec

- (D) 24
× 10

^{-5}m

^{3}/sec

**5. The soil which contains finest grain particles, is**

- (A) Coarse sand

- (B) Fine sand

- (C) Silt

- (D) Clay

**6. Si particles**

- (A) Show
dilatancy

- (B) Swell when
moist

- (C) Possess high
strength when dry

- (D) Disintegrate
easily

**7. The fundamental equation of specific gravity (**

*G*), dry density (*γ*), unit weight of water_{d}*(γ*and void ratio (_{ω})*e*), is- (A)

*e*= G

*/(1 +*

_{γω}*γd*)

- (B)

*G*=

*γd. γω*/(1 +

*e*)

- (C)

*γd*=

*G.*

*γω*/(1 +

*e*)

- (D)

*γω*=

*G.*

*γd*/(1 +

*e*)

**8. The minimum centre to centre distance of friction piles of 1 m diameter, is**

- (A) 2 m

- (B) 2 m to 3 m

- (C) 3 m to 4 m

- (D) 5 m

**9. When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as**

- (A) Quick test

- (B) Drained test

- (C) Consolidated
undrained test

- (D) None of
these

**10. If the failure of a finite slope occurs through the toe, it is known as**

- (A) Slope
failure

- (B) Face failure

- (C) Base
failure

- (D) Toe failure

**11. The liquidity index is defined as a ratio expressed as percentage of**

- (A) Plastic
limit minus the natural water content, to its plasticity index

- (B) Natural
water content minus its plastic limit to its plasticity index

- (C) Natural
water content plus its plastic limit to its plasticity index

- (D) Liquid
limit minus the natural water content to the plasticity index

**12. Number of piles required to support a column, is**

- (A) 1

- (B) 2

- (C) 3

- (D) 4

**13. According to the Indian Standards the specific gravity is the ratio of the unit weight of soil solids to that of water at a temperature of**

- (A) 17°C

- (B) 23°C

- (C) 27°C

- (D) 30°C

**14. Maximum size of clay particles is:**

- (A) 0.002 mm

- (B) 0.04 mm

- (C) 0.06 mm

- (D) 0.08 mm

**15. The passive earth pressure of a soil is proportional to (where**

*φ*is the angle of internal friction of the soil.)- (A) tan (45° -

*φ*)

- (B) tan (45° +

*φ*)

- (C) tan

^{2}(45° -

*φ*)

- (D) tan

^{2}(45° +

*φ*)

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