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50 Most Important and Expected MCQs from NBC for TNPSC CTSE Field Surveyor

1. Which part of the NBC 2005 deals with 'Fire and Life Safety'?

A) Part 2

B) Part 3

C) Part 4

D) Part 5


2. According to NBC 2005, industrial buildings fall under which group of occupancy classification?

A) Group E

B) Group F

C) Group G

D) Group H


3. What is the minimum width of a staircase in residential buildings as per NBC 2005?

A) 0.75 meters

B) 0.90 meters

C) 1.00 meter

D) 1.20 meters


4. The NBC 2005 recommends a minimum ceiling height for habitable rooms. What is this height?

A) 2.4 meters

B) 2.6 meters

C) 2.75 meters

D) 3.0 meters


5. As per NBC 2005, what is the maximum height of a riser in a staircase for residential buildings?

A) 150 mm

B) 175 mm

C) 190 mm

D) 200 mm


6. Which part of NBC 2005 provides guidelines on 'Building Materials'?

A) Part 4

B) Part 5

C) Part 6

D) Part 7


7. According to NBC 2005, what is the minimum width required for an exit door in public buildings?

A) 750 mm

B) 900 mm

C) 1000 mm

D) 1200 mm


8. The NBC 2005 classifies buildings into how many occupancy groups?

A) 5

B) 7

C) 9

D) 11


9. What is the minimum width of a corridor in educational buildings as per NBC 2005?

A) 1.0 meter

B) 1.5 meters

C) 2.0 meters

D) 2.5 meters


10. According to NBC 2005, what is the minimum thickness for masonry walls in residential buildings?

A) 100 mm

B) 150 mm

C) 200 mm

D) 250 mm


11. What is the minimum tread width for stairs in public buildings as per NBC 2005?

A) 250 mm

B) 270 mm

C) 300 mm

D) 350 mm


12. As per NBC 2005, what is the maximum allowable slope for a ramp providing access to differently-abled persons?

A) 1:8

B) 1:10

C) 1:12

D) 1:15


13. Which part of NBC 2005 deals with 'Structural Design'?

A) Part 4

B) Part 5

C) Part 6

D) Part 7


14. According to NBC 2005, what is the minimum width of a fire escape staircase?

A) 0.75 meters

B) 0.90 meters

C) 1.00 meter

D) 1.20 meters


15. What is the minimum headroom required above a staircase as per NBC 2005?

A) 2.0 meters

B) 2.1 meters

C) 2.2 meters

D) 2.5 meters


16. As per NBC 2005, what is the minimum width of a pathway for wheelchair access?

A) 0.75 meters

B) 0.90 meters

C) 1.00 meter

D) 1.20 meters


17. Which part of NBC 2005 provides guidelines on 'Building Services'?

A) Part 6

B) Part 7

C) Part 8

D) Part 9


18. According to NBC 2005, what is the minimum fire resistance rating for walls in a fire escape staircase?

A) 30 minutes

B) 60 minutes

C) 90 minutes

D) 120 minutes


19. What is the minimum width of a landing between flights of stairs as per NBC 2005?

A) Equal to the width of the staircase

B) 1.0 meter

C) 1.2 meters

D) 1.5 meters


20. As per NBC 2005, what is the maximum height of a building without requiring the installation of a lift?

A) 12 m

B) 15 m

C) 18 m

D) 20 m


21. What is the minimum distance between two buildings on adjacent plots as per NBC 2005?

A) 2 m

B) 3 m

C) 4 m

D) 5 m


22. According to NBC 2005, the floor area ratio (FAR) is calculated as the ratio of:

A) Total floor area to the plot area

B) Ground floor area to the plot area

C) Open space area to the total plot area

D) Covered area to the total floor area


23. As per NBC 2005, what is the minimum setback required for a residential building abutting a 9-meter-wide road?

A) 1 m

B) 2 m

C) 3 m

D) 4 m


24. Which group of buildings under NBC 2005 includes educational buildings?

A) Group B

B) Group C

C) Group D

D) Group E


25. What is the minimum width of a fire tender pathway around a building as per NBC 2005?

A) 3 m

B) 4 m

C) 6 m

D) 8 m


26. What is the minimum water storage capacity for firefighting in high-rise buildings as per NBC 2005?

A) 10,000 liters

B) 20,000 liters

C) 25,000 liters

D) 50,000 liters


27. NBC 2005 requires fire hydrants to be placed at intervals of:

A) 30 m

B) 45 m

C) 60 m

D) 90 m


28. What is the NBC 2005 recommendation for illumination levels in office workspaces?

A) 100 lux

B) 300 lux

C) 500 lux

D) 700 lux


29. What is the minimum percentage of natural ventilation required in habitable rooms as per NBC 2005?

A) 5% of the floor area

B) 8% of the floor area

C) 10% of the floor area

D) 12% of the floor area


30. What is the maximum permissible noise level in residential areas as per NBC 2005?

A) 40 dB

B) 45 dB

C) 50 dB

D) 55 dB


31. According to NBC 2005, what is the minimum thickness for a concrete slab in residential construction?

A) 100 mm

B) 120 mm

C) 150 mm

D) 200 mm


32. Which NBC 2005 provision deals with plumbing services?

A) Part 6

B) Part 7

C) Part 8

D) Part 9


33. What is the minimum turning radius for a fire tender as per NBC 2005?

A) 6 m

B) 9 m

C) 12 m

D) 15 m


34. What is the NBC 2005 recommendation for tactile flooring width in public buildings?

A) 0.5 m

B) 1.0 m

C) 1.5 m

D) 2.0 m


35. What is the minimum road width required for high-rise buildings as per NBC 2005?

A) 6 m

B) 8 m

C) 12 m

D) 15 m


36. What is the minimum horizontal clear distance between adjacent buildings for fire safety as per NBC 2005?

A) 2 m

B) 3 m

C) 4 m

D) 6 m


37. According to NBC 2005, what is the minimum height for a handrail on a ramp?

A) 750 mm

B) 850 mm

C) 900 mm

D) 1000 mm


38. NBC 2005 specifies that the minimum fire resistance of floors in high-rise buildings should be:

A) 60 minutes

B) 90 minutes

C) 120 minutes

D) 180 minutes


39. What is the NBC 2005 recommendation for the minimum width of a door in a hospital?

A) 0.9 m

B) 1.2 m

C) 1.5 m

D) 2.0 m


40. What is the minimum road width required for residential areas as per NBC 2005?

A) 3 m

B) 4 m

C) 6 m

D) 8 m


41. Which group of NBC 2005 covers storage buildings?

A) Group H

B) Group I

C) Group J

D) Group K


42. What is the NBC 2005-recommended floor area for classrooms in educational buildings?

A) 0.9 sq.m per student

B) 1.0 sq.m per student

C) 1.2 sq.m per student

D) 1.5 sq.m per student


43. What is the NBC-specified maximum slope for a roof accessible to the public?

A) 1:5

B) 1:8

C) 1:10

D) 1:12


44. What is the minimum size of a habitable room as per NBC 2005?

A) 8 sq.m

B) 9 sq.m

C) 10 sq.m

D) 12 sq.m


45. What is the NBC-recommended solar reflectance index (SRI) for green roofs?

A) 50

B) 70

C) 85

D) 100


46. Which part of NBC 2005 deals with energy conservation?

A) Part 10

B) Part 11

C) Part 12

D) Part 13


47. What is the minimum natural lighting percentage required for office spaces as per NBC 2005?

A) 2% of floor area

B) 3% of floor area

C) 5% of floor area

D) 8% of floor area


48. What is the NBC-recommended maximum sound level for offices?

A) 50 dB

B) 60 dB

C) 70 dB

D) 80 dB


49. What is the NBC requirement for the thickness of a fire-rated door in industrial buildings?

A) 25 mm

B) 30 mm

C) 35 mm

D) 45 mm


50. What is the NBC recommendation for the distance of a chimney from nearby structures?

A) 2 m

B) 4 m

C) 6 m

D) 8 m