When you are working with chemicals you should select all that apply.
1. wear and apron and googles
2.use a ventilation hood
3.know the location of the fire blanket and fire extinguisher
4.wash the area with a 10% bleach solution

1. wear an apron and googles  

2.use a ventilation hood  

3.know the location of the fire blanket and fire extinguisher

Explanation:

Chemicals in the laboratory if used inappropriately may cause accident or hazard. Therefore, special measures should be taken to avoid any loss of skin, clothes or lives working in a laboratory.

Following are the measures that should be taken while working with chemicals:

1. Wear an apron and googles: This will prevent the cloths from damage which may be caused if any accidental splash occurs. The goggles will protect the eyes from the fumes which may liberate during the reaction.

2. Use a ventilation hood: This will absorb the air which may consists of toxic gases produce after the reaction.

3.Know the location of the fire blanket and fire extinguisher: The fire blanket or fire extinguisher can help in preventing the damage caused due to accidental fire during the experimentation process.

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the answer to your question is b