1|Page
CSLB B LICENSE GENERAL CONTRACTOR
EXAM UPDATED 2025 2026 WITH ALL NEW
QUESTIONS AND EXACTLY RIGHT ANSWERS |
A+ QUALITY GUARANTEE
If unused mortar stiffens due to hydration of cement, what must you do? -
ANSWER: Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
ANSWER: 24-48 Hours
How long should you wait before installing tile on a shower pan? - ANSWER: 24
Hours
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having
compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical
examples of: - ANSWER: Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - ANSWER: 35V
In a series circuit, the total voltage is divided equally.
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For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep,
in Type-B soil is: - ANSWER: 1:1 (45°)
A Pittsburgh joint is used in: - ANSWER: HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: -
ANSWER: The outside of the building
What is the minimum slope toward the drain of a shower pan? - ANSWER: 1/4"
per foot (2%)
What is the diameter of #3 rebar? - ANSWER: 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - ANSWER:
Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - ANSWER: Both hinge and
strike sides, three on each side.
Which of the following is used to adhere vinyl floors?
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A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue - ANSWER: Epoxy cement
When do you need bracing for a drywall wall? - ANSWER: Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - ANSWER: Clear roots
to 12" below grade.
Dividing watts by amps gives you: - ANSWER: Volts
The most frequent on-the-job roofing accidents are: - ANSWER: Falls
Which of the following is NOT a type of wood block flooring?
A. Parquet
B. Wood Mosaic
C. Wood Tile
D. All of the above. - ANSWER: Wood tile
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Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - ANSWER: Second floor decking
The tool used to carry grout needed to patch a small hole is a:
A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch - ANSWER: Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
CSLB B LICENSE GENERAL CONTRACTOR
EXAM UPDATED 2025 2026 WITH ALL NEW
QUESTIONS AND EXACTLY RIGHT ANSWERS |
A+ QUALITY GUARANTEE
If unused mortar stiffens due to hydration of cement, what must you do? -
ANSWER: Discard the mortar
What minimum time must you wait before caulking or grouting new tiles? -
ANSWER: 24-48 Hours
How long should you wait before installing tile on a shower pan? - ANSWER: 24
Hours
Unstable dry rock, angular gravel, sandy loam, and cohesive soils having
compressive strengths greater than 0.5 and less than 1.5 tons/sq ft (tsf), are typical
examples of: - ANSWER: Type-B Soils
If 65 street lights are fed by a 2275 volt series circuit, what is the voltage across
each light? - ANSWER: 35V
In a series circuit, the total voltage is divided equally.
,2|Page
For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep,
in Type-B soil is: - ANSWER: 1:1 (45°)
A Pittsburgh joint is used in: - ANSWER: HVAC ductwork
The drain for a pressure relief valve on a water heater should be extended to: -
ANSWER: The outside of the building
What is the minimum slope toward the drain of a shower pan? - ANSWER: 1/4"
per foot (2%)
What is the diameter of #3 rebar? - ANSWER: 3/8"
If a vendor fails to provide an MSDS, you have the right to call: - ANSWER:
Cal/OSHA or DOSH
When installing a door jamb, you need shims at: - ANSWER: Both hinge and
strike sides, three on each side.
Which of the following is used to adhere vinyl floors?
,3|Page
A. Epoxy cement
B. Asphalt mastic
C. Latex primer
D. White glue - ANSWER: Epoxy cement
When do you need bracing for a drywall wall? - ANSWER: Diagonal bracing is
needed every 25' for any drywall wall.
How should you clear the roots from a construction site? - ANSWER: Clear roots
to 12" below grade.
Dividing watts by amps gives you: - ANSWER: Volts
The most frequent on-the-job roofing accidents are: - ANSWER: Falls
Which of the following is NOT a type of wood block flooring?
A. Parquet
B. Wood Mosaic
C. Wood Tile
D. All of the above. - ANSWER: Wood tile
, 4|Page
Lightweight concrete is best used for:
A. Curb and Gutter
B. Second floor decking
C. First floor slab on grade
D. Footings - ANSWER: Second floor decking
The tool used to carry grout needed to patch a small hole is a:
A. Hawk
B. Poling board
C. Spot board
D. Mason's scutch - ANSWER: Spot Board
Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
