CSLB B LICENSE GENERAL CONTRACTOR TEST QUESTIONS AND
CORRECT ANSWERS | LATEST UPDATE 2025| CSLB B|
CONTRACTOR.
QUESTION: What minimum time must you wait before caulking or grouting new tiles? - ANSWER-24-48
Hours
QUESTION: How long should you wait before installing tile on a shower pan? - ANSWER-24 Hours
QUESTION: 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
QUESTION: 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.
,QUESTION: For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in Type-B
soil is: - ANSWER-1:1 (45°)
QUESTION: A Pittsburgh joint is used in: - ANSWER-HVAC ductwork
QUESTION: The drain for a pressure relief valve on a water heater should be extended to: - ANSWER-The
outside of the building
QUESTION: What is the minimum slope toward the drain of a shower pan? - ANSWER-1/4" per foot (2%)
QUESTION: What is the diameter of #3 rebar? - ANSWER-3/8"
QUESTION: If a vendor fails to provide an MSDS, you have the right to call: - ANSWER-Cal/OSHA or DOSH
QUESTION: When installing a door jamb, you need shims at: - ANSWER-Both hinge and strike sides,
three on each side.
QUESTION: Which of the following is used to adhere vinyl floors?
A. Epoxy cement
B. Asphalt mastic
,C. Latex primer
D. White glue - ANSWER-Epoxy cement
QUESTION: When do you need bracing for a drywall wall? - ANSWER-Diagonal bracing is needed every
25' for any drywall wall.
QUESTION: How should you clear the roots from a construction site? - ANSWER-Clear roots to 12" below
grade.
QUESTION: Dividing watts by amps gives you: - ANSWER-Volts
QUESTION: The most frequent on-the-job roofing accidents are: - ANSWER-Falls
QUESTION: 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
QUESTION: 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
QUESTION: 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
QUESTION: Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
D. Copper - ANSWER-Copper
CORRECT ANSWERS | LATEST UPDATE 2025| CSLB B|
CONTRACTOR.
QUESTION: What minimum time must you wait before caulking or grouting new tiles? - ANSWER-24-48
Hours
QUESTION: How long should you wait before installing tile on a shower pan? - ANSWER-24 Hours
QUESTION: 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
QUESTION: 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.
,QUESTION: For safety reasons, the maximum simple slope of an excavation, up to 20 ft deep, in Type-B
soil is: - ANSWER-1:1 (45°)
QUESTION: A Pittsburgh joint is used in: - ANSWER-HVAC ductwork
QUESTION: The drain for a pressure relief valve on a water heater should be extended to: - ANSWER-The
outside of the building
QUESTION: What is the minimum slope toward the drain of a shower pan? - ANSWER-1/4" per foot (2%)
QUESTION: What is the diameter of #3 rebar? - ANSWER-3/8"
QUESTION: If a vendor fails to provide an MSDS, you have the right to call: - ANSWER-Cal/OSHA or DOSH
QUESTION: When installing a door jamb, you need shims at: - ANSWER-Both hinge and strike sides,
three on each side.
QUESTION: Which of the following is used to adhere vinyl floors?
A. Epoxy cement
B. Asphalt mastic
,C. Latex primer
D. White glue - ANSWER-Epoxy cement
QUESTION: When do you need bracing for a drywall wall? - ANSWER-Diagonal bracing is needed every
25' for any drywall wall.
QUESTION: How should you clear the roots from a construction site? - ANSWER-Clear roots to 12" below
grade.
QUESTION: Dividing watts by amps gives you: - ANSWER-Volts
QUESTION: The most frequent on-the-job roofing accidents are: - ANSWER-Falls
QUESTION: 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
QUESTION: 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
QUESTION: 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
QUESTION: Which pipe is NOT appropriate for industrial wastes?
A. Cast iron
B. Schedule 40 ABS DWV
C. Extra strength vitrified clay
D. Copper - ANSWER-Copper
