Consider the following statements : Sand in mortar is needed for 1. decreasing t

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Question
Consider the following statements :
Sand in mortar is needed for
1. decreasing the quantity of cement.
2. reducing shrinkage.
3. decreasing the surface area of the binding material.
4. increasing the strength.
Of these statements :
Options
A. 2, 3 and 4 are correct
B. 1, 2 and 3 are correct
C. 1, 3 and 4 are correct
D. 1, 2 and 4 are correct

Correct Answer

1, 2 and 4 are correct

UPSC Civil Service Exam Questions problems

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1. According to ICAO recommendations, what is the rate of elevation correction for the runway above MSL?
Options
A. 1 % for every 100 m of elevation above MSL
B. 7 % for every 300 m of elevation above MSL
C. 2 % for every 500 m of elevation above MSL
D. 2 % for every 300 m of elevation above MSL

2. The rectangular block shown in the given figure is subjected to pure shear to intensity 'q'. If BE represents the i principal plane and the principal stresses are ?₁, ?₂ ; then the values of ?, ?₁ and ?₂ will be respectively.
Options
A. ?�, 90�; + q and - q
B. 30�, 120�; + q and - q
C. 45�, 135�; + and
D. 45�, 135�; + q and - q

3. The ratio of total elongation of a bar of uniform cross-section produced under its own weight to the elongation produced by an external load equal to the weight of the bar is
Options
A. 2
B. 1
C. 1/2
D. 1/4

4. Purlins are provided, in industrial buildings, over roof trusses to carry dead loads, live loads and wind loads. As per IS code, what are they assumed to be?
Options
A. Simply supported
B. Cantilever
C. Continuous
D. Fixed

6. A cold drawn seamless steel tubing subject to internal pressure, has a diameter of 6 cm and wall thickness of 0.2 cm. The ultimate strength of steel is 3600 kg/cm². The bursting pressure (in kg/cm²) is
Options
A. 120
B. 240
C. 480
D. 960

8. The absolute maximum Bending Moment in a simply supported beam of span 20 m due to moving udl of 4 t/m spanning over 5 m is
Options
A. 87.5 t-m at the support
B. 87.5 t-m near the midpoint
C. 3.5 t-m at the midpoint
D. 87.5 t-m at the midpoint

9. The following steps are involved in laying a sewer in a trench :
1. Transferring the center line of the sewer to the bottom trench.
2. Setting sight rails over the trench.
3. Driving pegs to the level of the invert line of the sewer.
4. Placing the sewer of these steps is The correct sequence of these steps is
Options
A. 1, 2, 3, 4
B. 2, 3, 4, 1
C. 4, 2, 3, 1
D. 2, 3, 1, 4

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