PYQs of GATE ESE and PSU for SSC JE / RRB JE [Part - 3]

✓ 15 ONE LINER MCQs 

  BUILDING MATERIALS [PART 3]

1. Marine work - Blast furnace slag cement.

2. Initial setting time of concrete ceases at 0°C

3. Gap grading is one in which one or more intermediate fractions are absent.

4. Impurities in the mixing water is destructive - Lead Nitrate.

5. In case the concrete is to be transported by pumping , the slump should be between 75mm to 100mm

6. If slump of concrete mix is 75mm the workability of concrete is considered to be medium 

7. Vee bee test is suitable for concrete mix having low and very low workability

8. The most appropriate method to specify concrete mix by the grade of concrete.

9. The stress strain curve of concrete under compression is obtained by testing the cylindrical specimen under 

uniform rate of strain. 

10. As compared to static test , The dynamic test give the higher value of Poisson's ratio.

11. Inelastic behaviour of concrete is due to use of aggregate.

12. The tensile strength of concrete is approximately 10% of compressive strength of concrete.

13. As per IS specification concrete is disignated into 7 grades.

14. Unit weight of RCC - 25KN/mm2

15. Alcohol do not react with concrete.