1. The compressive strength of sandstone is

1. 400 Kg/cm²
2. 550 Kg/cm²
3. 650 Kg/cm²
4. 800 Kg/cm²

2. Which of the following scales is used for estimating the hardness of stones?

1. Richter
2. Abram’s
3. Moh’s
4. Mohr’s

3. A good building stone should have a wearing resistance less than

1. 7%
2. 5%
3. 1.5%
4. 3%

4. Which of the following stone is recommended for road metal work?

1. quartzite
2. sandstone
3. marble
4. slate

5. In general, which of the following has the highest porosity?

1. sandstone
2. loose sand and gravel
3. chalk
4. limestone

6. The compressive strength of granite is

1. 50 to 70 mn/m²
2. 170 to 200 mn/m²
3. 130 to 170 mn/m²
4. 70 to 130 mn/m²

7. Dressing of stones is done

1. after seasoning
2. after quarrying
3. before use
4. before seasoning

8. Crushing strength of sandstone is

1. 75 N/mm²
2. 65 N/mm²
3. 55 N/mm²
4. 45 N/mm²

9. The tendency of a stone is to split along

1. structure
2. cleavage
3. fracture
4. texture

10. The crushing strength of a good building stone should be more than

1. 200 MPa
2. 150 MPa
3. 100 MPa
4. 50 MPa

11. The test to check the presence of poorly weathering calcium carbonates in sandstone is

1. Absorption Test
2. Slump Test
3. Smith’s Test
4. Acid Test

12. On Moh’s scale, a scratch with the aid of a finger nail indicates a hardness in the range of

1. 0-1
2. 1-2
3. 2-3
4. 3-4

13. Which of the following is not a type of drilling equipment?

1. Jack Hammer
2. Shot drill
3. Drifter
4. Ripper

14. A good building stone should be

1. Strong
2. Good in appearance and colour
3. Hard and tough
4. All the above

15. On Moh’s scale of hardness highest hardness is of

1. Talc
2. Topaz
3. Fluorite
4. Diamond

16. As per moh’s scale the hardness of quartz and topaz respectively are

1. 8 and 7
2. 7 and 8
3. 10 and 9
4. 9 and 10

17. Consider the following statements for selecting building stones

1. Seasoning of stones is essential and is done by soaking in water
2. Specific gravity of stone is to be more than 2.7
3. Porosity of stone affects its durability
4. Climatic conditions decide the type of stone to be used in construction

Which of the above statements are correct?

1. i, ii and iv only
2. i, ii and iii only
3. ii, iii and iv only
4. i, iii and iv only

18. Maximum permissible wear in stones for road work is

1. 2%
2. 4%
3. 3%
4. 1%

19. Which position of natural bed of stone relative to direction of pressure ensures maximum strength?

1. Parallel
2. Perpendicular
3. Oblique
4. None of the above

20. The specific gravity of quartz is

1. 2.85
2. 2.80
3. 2.91
4. 2.72
5. 2.65