UPSC Recruitment Paper 2016 : Junior Works Manager (Civil) in Ordnance Factory Board

Civil Engineering

RT -20-11-2016

1. Tensile strength of wood is

(a) Maximum in the direction parallel to grains
(b) Minimum in the direction parallel to grains
(c) Maximum in the direction across the grains
(d) The same in all the directions

2. Which type of cement is most adaptable for underwater constructions?

(a) Rapid Hardening cement
(b) Ordinary Portland cement
(c) Low-heat Portland cement
(d) Blast furnace slag cement

3. Green colour of cement is caused by

(a) Iron oxide
(b) Magnesium oxide
(c) Chromium dioxide
(d) Carbon pigments

4. Super-plasticizers are

(a) Additives applied to bitumen to achieve a low melting point
(b) Water-reducing admixtures for concrete
(c) Additives applied to bitumen to improve its viscosity
(d) Accelerating admixtures

5. Reducing water/cement ratio in concrete during manufacture results in

(a) Increase in 28 days compressive strength
(b) Decrease in 28 days compressive strength
(c) No change in 28 days compressive strength
(d) Significant increase in tensile strength

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Courtesy : UPSC