Chem – Chapter 13

1

Which of the following is a corrosive hazard?

A Hydrochloric acid B Sodium chloride C Water D Sugar

2

What should you do first if a chemical splashes into your eye?

A Rub the eye with your hand B Rinse with plenty of water C Apply ointment D Close the eye tightly

3

What does the PASS method stand for in fire extinguisher use?

A Pull, Aim, Squeeze, Sweep B Push, Aim, Spray, Stop C Pull, Aim, Spray, Sweep D Point, Aim, Squeeze, Stop

4

What is the first step when a chemical spills in the lab?

A Ignore it and continue working B Inform the teacher and follow safety instructions C Clean it with your bare hands D Add water to it

5

What does the radiation hazard sign warn you about?

A Poisonous gas B Radioactive material C Explosive material D Corrosive liquid

6

Which type of glove is commonly used in school laboratories for handling chemicals?

A Woolen gloves B Leather gloves C Nitrile or latex gloves D Cotton gloves

7

Which hazard symbol indicates a chemical that can cause damage to living tissue on contact?

A Flammable B Oxidising C Corrosive D Environmental hazard

8

Which personal protective equipment (PPE) must be worn in the laboratory to protect the eyes from chemical splashes?

A Lab coat B Safety goggles C Closed shoes D Gloves

9

What does the PASS method help you remember?

A How to use a fire extinguisher B How to dispose of chemicals C How to wear PPE D How to read hazard signs

10

What should be used to smother a small fire in the laboratory?

A Water B Fire blanket C Oil D Paper

11

Which hazard sign warns that a chemical can cause serious health problems or death if inhaled or swallowed?

A Toxic B Flammable C Oxidising D Environmental hazard

12

Where should fire extinguishers be located in a laboratory?

A Near the exit and easily accessible B Inside a locked cabinet C At the back of a storage room D On the ceiling

13

Which of the following is the correct method to use a fire extinguisher?

A Pull, Aim, Squeeze, Sweep B Push, Aim, Spray, Stop C Pull, Avoid, Spray, Sweep D Point, Aim, Squeeze, Spray

14

What does the irritant hazard symbol indicate?

A The chemical can cause severe burns B The chemical can cause redness or swelling on contact C The chemical is highly flammable D The chemical is explosive

15

Which PPE is worn to protect the skin and clothes from chemical spills?

A Safety goggles B Lab coat C Face mask D Ear plugs

16

What is an asphyxiation hazard?

A A gas or vapor that can cause suffocation B A chemical that causes skin burns C A chemical that catches fire easily D A chemical that explodes

17

What is the first step when a chemical spill occurs in the lab?

A Inform the teacher and follow safety instructions B Clean it with bare hands C Ignore it if small D Add water to dilute it

18

Why should you not smell chemicals directly?

A They may be poisonous or cause irritation B They may smell good C They may be colourless D They may be cold

19

Which hazard sign indicates a chemical that can easily catch fire?

A Flammable B Corrosive C Toxic D Oxidising

20

What should you use to extinguish a small fire on a person's clothing?

A Fire blanket B Water C CO2 extinguisher D Sand

21

Which type of fire extinguisher is most suitable for putting out a fire caused by flammable liquids such as petrol?

A Water extinguisher B Foam extinguisher C Carbon dioxide extinguisher D Sand bucket only

22

Which PPE is essential for protecting your eyes in the laboratory?

A Safety goggles B Lab coat C Gloves D Closed shoes

23

What does an oxidising hazard sign indicate?

A The chemical can supply oxygen and intensify fire B The chemical is safe C The chemical is corrosive D The chemical is toxic

24

What should you do if your clothing catches fire in the laboratory?

A Run to get help B Stop, drop, and roll C Use water to put it out D Remove your clothing quickly

25

Which hazard sign is used for chemicals that can easily catch fire?

A Oxidising B Flammable C Corrosive D Toxic