1 When using a Bunsen burner, what should you do with long hair? A Leave it loose B Tie it back C Cut it D Cover it with a cap
2 What should you do with leftover chemicals after an experiment? A Pour them down the sink B Dispose as instructed C Leave them on the bench D Put them back in the original container
3 What should you do if you are unsure about a lab procedure? A Proceed with caution B Ask the teacher C Check the internet D Guess
4 Which of the following is a precaution when using a knife or scalpel? A Cut away from your body B Cut toward your body C Use with wet hands D Use without instruction
5 Which of the following is NOT a safe practice in the lab? A Pointing a test tube at yourself B Wearing closed-toe shoes C Using a fume hood D Washing hands after experiments
6 What is the first thing to do in case of a fire in the lab? A Run out of the room B Alert the teacher C Try to put it out yourself D Open the windows
8 What is the first aid for a chemical burn? A Flush with water B Apply oil C Cover with cloth D Leave it open
9 Which of the following is a safe way to store flammable chemicals? A In a designated flammable cabinet B On an open shelf C Near a heat source D In a plastic bag
10 Why should you never use a fire extinguisher on a person? A It can cause injury B It is ineffective C It is too heavy D It is water-based
11 Which of the following is a safe practice when using a Bunsen burner? A Keep it near flammable materials B Always have a fire extinguisher nearby C Leave it unattended D Light it with a match
12 Which of the following should be used to transfer small amounts of liquid? A Pipette B Beaker C Flask D Measuring cup
13 What does the health hazard symbol represent? A Toxic or harmful to health B Flammable C Explosive D Corrosive
14 What is the purpose of a fume hood? A Store chemicals B Ventilate harmful gases C Heat substances D Measure liquids
15 Which symbol indicates a substance is corrosive? A Skull and crossbones B Test tube with liquid spilling on hand C Flame D Exploding bomb
16 What does the oxidizer symbol indicate? A Substance that can burn B Substance that helps fire burn C Substance that is toxic D Substance that is corrosive
17 What is the correct procedure for disposing of chemical waste? A Follow the lab's waste disposal guidelines B Pour it down the drain C Put it in the trash D Store it indefinitely
18 What should be done immediately if a flammable liquid catches fire? A Pour water on it B Use a fire blanket or extinguisher C Blow it out D Fan it
19 Why is it important to label all chemical containers? A To identify contents and hazards B To decorate the lab C To indicate the date D To know the price
20 What is the reason for keeping the lab bench clean? A To prevent accidents and contamination B To look organized C To save time D To avoid eating
21 What is the function of a volumetric flask? A To store chemicals B To measure accurate volumes C To heat substances D To mix large volumes
22 Which of the following is a correct lab dress code? A Wearing loose sleeves B Wearing open-toed shoes C Wearing a lab coat D Wearing sandals
23 Which of the following is an appropriate response to a chemical spill on the floor? A Alert the teacher and follow spill procedure B Ignore it C Walk through it D Cover it with a cloth
24 What is the best way to prevent accidents in the lab? A Follow all safety rules B Work alone C Use minimal equipment D Rush through experiments
25 What is the meaning of the gas cylinder hazard symbol? A Contains compressed gas B Contains toxic gas C Contains flammable gas D Contains harmless gas