FREE NCCER Core Basic Safety & Health Questions and Answers

Question 1

What is the primary purpose of wearing a hard hat on a construction site?

Accepted Answer

Protect against head injuries

Answer

Keep hair clean

Answer

Provide sun protection

Answer

Enhance visibility

Question 2

Which color is commonly used for caution signs to indicate potential hazards on the job site?

Accepted Answer

Yellow

Answer

Red

Answer

Green

Answer

Blue

Question 3

When lifting heavy materials manually, which technique helps prevent back injuries?

Accepted Answer

Lift with your legs, keeping back straight

Answer

Keep legs straight and bend at waist

Answer

Twist while lifting to adjust balance

Answer

Hold load away from body

Question 4

What is the minimum safe distance to keep from a power line carrying up to 50 kV according to OSHA?

Accepted Answer

10 feet

Answer

3 feet

Answer

6 feet

Answer

8 feet

Question 5

Which class of fire extinguisher is suitable for electrical fires?

Accepted Answer

Class C

Answer

Class A

Answer

Class B

Answer

Class D

Question 6

Why is housekeeping important for job‑site safety?

Accepted Answer

It reduces trip and fall hazards

Answer

It boosts worker morale only

Answer

It shows company pride but no safety impact

Answer

It speeds up inspections only

Question 7

What should be done first if you discover a chemical spill on site?

Accepted Answer

Notify coworkers and isolate area

Answer

Begin mopping immediately

Answer

Ignore it if small

Answer

Cover it with sawdust

Question 8

Which personal protective equipment (PPE) is required when using a grinder that produces flying debris?

Accepted Answer

Safety goggles or face shield

Answer

Earplugs

Answer

Respirator

Answer

High‑visibility vest

Question 9

OSHA requires a competent person to inspect excavations daily for hazards such as:

Accepted Answer

Cave‑in potential and atmospheric hazards

Answer

Employee attendance

Answer

Tool inventory

Answer

Weather forecasts only