1 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
2 What does the skull and crossbones symbol indicate? A Flammable B Toxic or poisonous C Corrosive D Explosive
3 Which of the following is a common lab safety rule? A No eating or drinking B Eating is allowed if careful C Drinking water is permitted D Snacks are allowed
4 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
5 Which of the following is a method to control chemical spills? A Use a spill kit B Use a broom C Let it evaporate D Cover with paper
6 What is the purpose of a fume hood? A Store chemicals B Ventilate harmful gases C Heat substances D Measure liquids
7 What is the first step in using a fire extinguisher? A Pull the pin B Squeeze the handle C Aim at the fire D Sweep side to side
8 Which of the following should be used to transfer small amounts of liquid? A Pipette B Beaker C Flask D Measuring cup
9 Which symbol indicates a substance is corrosive? A Skull and crossbones B Test tube with liquid spilling on hand C Flame D Exploding bomb
10 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
11 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
12 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
13 What is the reason for never using a damaged glassware? A It may break and cause injury B It is not accurate C It is expensive D It is difficult to clean
14 What should you do if you spill a chemical on your skin? A Wash immediately with water B Rub it off C Leave it D Apply cream
15 Which of the following should you NOT do when heating a test tube? A Point it toward yourself or others B Use a test tube holder C Keep it away from flammable materials D Heat gently
16 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
17 What is the role of a safety shower in the lab? A To extinguish fires B To wash large chemical spills from the body C To clean glassware D To water plants
18 What is the first aid for a chemical burn? A Flush with water B Apply oil C Cover with cloth D Leave it open
19 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
20 What is the correct way to smell a chemical? A Place the container near your nose and inhale deeply B Waft the vapors toward you C Sniff directly D Smell without any precaution
21 What is the function of a fire extinguisher in a lab? A To cool the room B To put out fires C To clean equipment D To store chemicals
22 Where should broken glass be disposed of in a lab? A Regular trash bin B Broken glass container C Sink D Outside
23 What should you do if you cut yourself in the lab? A Ignore it B Tell the teacher and get first aid C Wash it with soap D Wrap it with paper
24 Which of the following is an explosive hazard symbol? A Flame over circle B Exploding bomb C Skull and crossbones D Corrosion
25 What does the exclamation mark hazard symbol indicate? A Flammable B Harmful or irritating C Explosive D Corrosive