# Practice Test: Question Set - 05

**1. For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are:**

- (A) 70
liters of sand and 120 liters of aggregates

- (B) 70
kg of sand and 140 liters of aggregates

- (C) 105
liters of sand and 140 liters of aggregates

- (D) 105
liters of sand and 210 liters of aggregates

**2. A concrete using an air entrained cement**

- (A) Has
strength less than 10% to 15%

- (B) Has more
resistance to weathering

- (C) Is more
plastic and workable

- (D) Is free from
segregation and bleeding

**3. In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on**

**(i) Bottom face near counterfort**

**(ii) Top face near counterfort**

**(iii) Bottom face near centre of span**

**(iv) Top face near centre of span**

**The correct answer is**

- (A) Only (i)

- (B) Only (ii)

- (C) Both (i) and (iv)

- (D) Both (ii) and (iii)

**4. Pick up the correct statement from the following:**

- (A) Segregation
is necessary for a workable concrete

- (B) Consistency
does not affect the workability of concrete

- (C) If
the concrete mix is dry, the slump is maximum

- (D) None of
these

**5. The surface where two successive placements of concrete meet, is known as**

- (A) Contraction
joint

- (B) Expansion
joint

- (C) Construction
joint

- (D) Both (a) and
(b)

**6. A beam curved in plan is designed for**

- (A) Bending moment and shear

- (B) Bending moment and torsion

- (C) Shear and torsion

- (D) Bending moment, shear and torsion

**7. Pick up the correct statement from the following:**

- (A) Water
cement paste hardens due to hydration

- (B) During
hardening cement binds the aggregates together

- (C) Cement
provides strength, durability and water tightness to the concrete

- (D) All the
above

**8. 'Ware house pack' of cement means**

- (A) Full
capacity of the ware house

- (B) Pressure
exertion of the bags of upper layers

- (C) Pressure
compaction of the bags on lower layers

- (D) Packing
the ware house

**9. High carbon content in the steel causes**

- (A) Decrease in tensile strength but increase in
ductility

- (B) Increase in tensile strength but decrease in
ductility

- (C) Decrease in both tensile strength and ductility

- (D) Increase in both tensile strength and ductility

**10. If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed**

- (A) 10 cm

- (B) 15 cm

- (C) 20 cm

- (D) 25 cm

**11. Particles of 0.002 mm size are that of**

- (A) Clay

- (B) Sand

- (C) Gravel

- (D) None of
these

**12. Ultimate strength of cold drawn high steel wires**

- (A) Increases with increase in diameter of bar

- (B) Decreases with increase in diameter of bar

- (C) Does not depend on diameter of bar

- (D) None of the above

**13. The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as**

- (A) Low-heat
Portland cement

- (B) Rapid
hardening Portland cement

- (C) Portland
blast slag cement

- (D) Portland
pozzolana cement

**14. The dimensions of a 35 liter forma for measuring aggregates by volume, are:**

- (A) Length 30
cm, breadth 25 cm, height 30 cm

- (B) Length
39 cm, breadth 25 cm, height 32 cm

- (C) Length 27
cm, breadth 27 cm, height 48 cm

- (D) Length 220
cm, breadth 25 cm, height 40 cm

**15. Ratio of permissible stress in direct compression and bending compression is**

- (A) Less than 1

- (B) Between 1 and 1.5

- (C) Between 1.5 and 2.0

- (D) Greater than 2

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