Online MCQ - Questions
1. Arrange the Compounds according to Cementeous properties in decreasing order
- Belite > Celite > Aelite > Felite
- Aelite > Belite > Celite > Felite
- Felite > Celite > Aelite > Belite
- Aelite > Belite > Felite > Celite
2. Higher Percentage of Lime and Silica results in increased percentage of Strength with
- a) Unsoundness in cement
- b) Increased setting time of the cement
- c) Decreased Setting time of the cement
- d) Weaking the Cement
3. In Manufacturing of White cement, the amount of iron oxide is limited to
- a) 1%
- b) 2%
- c) 3%
- d) 5%
4. Whiteness of Cement(ISI Scale) should not be less than
- a) 30%
- b) 50%
- c) 70%
- d) 90%
5. What Percentage of water repellant film forming substances are added in hydrophoic cement ?
- a) 0.3% of Calcium Chloride
- b) 0.5% of Staric Acid
- c) 0.2% of Oelic Acid
- d) All of these
6. The compressive strength of ordinary Portland cement after 3 days should not be less than:
- (a) 50 kg/cm2
- (b) 100 kg/cm2
- (c) 115 kg/cm2
- (d) 150 kg/cm2
7. MM 1.5 means:
- a) Masonry Mortar of cement content 1.5 bags
- b) Mild Mortar of cement content 1.5 bags
- c) Masonry Mortar of compressive strength
- 1.5N/mm2.
8. Light weight mortar is prepared by using:
- a) Lime
- b) Surkhi
- c)Wood chips
- d) Flyash
9. The bulk density of X-ray shielding mortar is:
- a) 6-12 kN/m3
- b) 5 kN/m3 and above
- c) 22 kN/m3 and above
- d) 10-20 kN/m3
10. The bricks prepared by dipping mould in water every time are known as
- a) Plastic Clay Bricks
- b) Earthern Bricks
- c) Slope Moulded Bricks
- d) Water Dopped Bricks
11. ________is adopted to prepare small quantities of lime mortar .
- a) Grinding
- b) Grilling
- c) Pounding
- d) Digging
12. Which of the following statements are CORRECT with respect to Reinforced brickwork, according to the IS 10440 (1983) : Code of practice for construction of RB and RBC floors and roofs. a. All bricks shall be thoroughly saturated by submerging them in clear water for at least four hours before use b. The formwork for the RB and RBC floor or roof shall NOT be removed before 14 days after laying c. The mortar shall be a mix of 1: 1,1 part of fresh Portland cement to 1 parts of coarse sand d. The rods should be kept in touch with bricks
- A. a & b only
- B. a & c only
- C. b & c only
- D. a & d only
13. According to IS 8041-1990. the minimum specific surface area elvauated by Blaine’s air permeability method and unsoundness for Masonary cement is:
- A. 15
- B. 1
- C. 150
- D. 225
14. According to IS: 654-1962, the maximum water absorption percentage of Class A type Mangalore pattern tiles is:
- A. 18%
- B. 25%
- C. 20%
- D. 35%
15. According to IS: 654-1962, the average weight(kg)of tiles when dried at 105?C shall range between
- A. 1 - 2 kg
- B. 2 - 3 kg
- C. 3 - 4 kg
- D. 4 - 5 kg
16. Lap splicing is generally not permitted if the bar diameter exceeds
- a) 25 mm
- b) 32 mm
- c) 36 mm
- d) 40 mm
17. The limits of percentage ‘p’ of the longitudinal reinforcement in a column is
- a) 0.15% to 2%
- b) 0.8% to 4%
- c) 0.8% to 6%
- d) 0.8% to 8%
18. The Nominal cover provided for unit fire resistance for RCC Section in case of Continuous Ribbed Slabs is
- a) 20mm
- b) 25mm
- c) 30mm
- d) 40mm
19. :The load carrying capacity of a helically reinforced column as compared to that of a tied column is about :
- A. 5% less
- B. 10% less
- C. 5% more
- D. 10% more
20. Lateral ties in RC columns are provided to resist
- a) Bending moment
- b) Shear
- c) Buckling of longitudinal steel bars
- d) Both bending moment and shear
21. Effective Length of a cantilever column is
- a) 0.5 L
- b) L
- c) 1.2 L
- d) 2 L
22. What is the minimum nominal percentage longitudinal reinforcement to be provided in a concrete pedestal as per relevant IS code
- a) 0.4
- b) 0.2
- c) 0.15
- d) 0.1
23. The pitch of spirals for splicing in tension members should not exceed
- a) 20 mm
- b) 15 mm
- c) 25 mm
- d) 100 mm
24. The minimum diameter of spirals recommended for splicing in tension members is
- a) 5 mm
- b) 6 mm
- c) 8 mm
- d) 10 mm
25. The minimum lap length required for reinforcing bars in tension is
- a) 30 times the bar diameter
- b) 24 times the bar diameter
- c) 16 times the bar diameter
- d) None
26. The type of bond which gets developed due to variation of bending moment along the beam is :
- a) Development Length
- b) Anchorage Bond
- c) Flexural Bond
- d) All of the Above
27. Which of the following option is the best way to have proper bond between the steel & surrounding concrete
- a) Use small number of large diameter bars
- b) Use large number of large diameter bars
- c) Use shear stirrups
- d) All of the Above
28. In limit state design, the design bond stress for compressive deformed bars (conforming to IS 1786) for M20 concrete mentioned in IS 456 : 2000 is (in N/mm2 units):
- A. 1.92
- B. 1.2
- C. 1.8
- D. 2.4
29. When mild steel bars are used in place of deformed bars then bond strength :
- a) Increases
- b) Decreases
- c) Independent of type of steel
- d) Becomes Zero
30. Lateral ties in RC columns are provided to resist
- a) Bending moment
- b) Shear
- c) Buckling of longitudinal steel bars
- d) Both bending moment and shear
31. Shear span is defined as the region where
- A. shear force is constant
- B. shear force is zero
- C. flexural moment is constant
- D. flexural moment is zero
32. Spacing of stirrups in a rectangular beam, is
- (a) Kept constant throughout the length
- (b) Decreased towards the center of the beam
- (c) Increased at the ends
- (d) Increased at the center of the beam
33. The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
- a)Shear force / (Lever arm × Width)
- b)Lever arm / (Shear force × Width)
- c)Width / (Lever arm × shear force)
- d)None of these
34. Characteristic strength of M 20 concrete is 20 MPa. What is the number of cubes having 28 days compressive strength greater than 20 MPa out of 100 cubes made with this concrete?
- A. All
- B. 95
- C. 80
- D. 50
35. As per IS 456-2000, which one of the following correctly expresses the modulus of elasticity of concrete? (read with the relevant units)
- A. Ec = 0.7 √fck
- B. Ec = 500 √fck
- C. Ec = 5000 √fck
- D. Ec = 5700 √fck
36. What is the value of flexural strength of M 25 concrete?
- A. 4.0 MPa
- B. 3.5 MPa
- C. 3.0 MPa
- D. 1.75 MPa
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