Question 1

Which of the following is NOT a component of the fire triangle, as shown in the provided materials?

Accepted Answer

Water (Water)

Question 2

According to the laboratory regulations, what is the correct procedure if a chemical spill occurs in the lab?

Accepted Answer

Report the spill to the lab supervisor and follow the emergency protocol.

Question 3

Which symbol should be present on a chemical container to indicate it is corrosive?

Accepted Answer

A test tube pouring liquid onto a hand and a surface

Question 4

A student is preparing to work with concentrated hydrochloric acid (HCl) in the lab. Which safety precaution is most important?

Accepted Answer

Wear safety goggles and gloves, and work under a fume hood.

Question 5

If a fire starts in the laboratory, what is the FIRST action you should take according to the emergency instructions?

Accepted Answer

Alert others and evacuate the area using the nearest exit.

Question 6

Which of the following best describes the role of a Material Safety Data Sheet (MSDS) in laboratory safety?

Accepted Answer

It lists the chemical's physical and chemical properties, hazards, and safe handling procedures.

Question 7

A student accidentally ingests a small amount of a chemical. According to the laboratory rules, what should be done?

Accepted Answer

Report the incident immediately to the lab supervisor and seek medical attention.

Question 8

Which of the following is a correct statement about the use of personal protective equipment (PPE) in the laboratory?

Accepted Answer

Safety goggles must be worn at all times when handling chemicals.

Question 9

What is the correct formula to calculate the concentration $$c of a $$solution if you dissolve $$n$$ moles of solute in $$V$$ liters of solvent?

Accepted Answer

$$c = \frac{n}{V}$$

Question 10

A chemical waste container is labeled with the symbol for 'flammable.' Which type of chemical should NOT be disposed of in this container?

Accepted Answer

Non-flammable solids

Question 11

Which of the following actions is prohibited in the laboratory according to the regulations?

Accepted Answer

Eating and drinking

Question 12

A student needs to neutralize a spill of concentrated HCl. Which chemical should be used for neutralization?

Accepted Answer

Sodium hydroxide ($$NaOH)$$

Question 13

Which of the following is the correct order of steps for preparing for a laboratory experiment involving hazardous chemicals?

Accepted Answer

Read the MSDS, wear appropriate PPE, and follow waste disposal instructions.

Question 14

If a student is unsure about the proper disposal method for a chemical, what should they do?

Accepted Answer

Consult the laboratory supervisor or safety coordinator.

Question 15

Which equation correctly represents the neutralization reaction between hydrochloric acid and sodium hydroxide?

Accepted Answer

$$HCl + NaOH \rightarrow NaCl + H_2O$$

Question 16

A student is working with a volatile organic solvent. What is the best way to minimize inhalation exposure?

Accepted Answer

Work in a fume hood.

Question 17

Which of the following is a correct statement about the use of chemical waste containers?

Accepted Answer

Each type of chemical waste must be disposed of in its designated container.

Question 18

A student is planning an experiment with a highly toxic chemical. Which additional safety measure should be taken?

Accepted Answer

Inform the lab supervisor and ensure emergency procedures are in place.

Question 19

Which of the following is the correct definition of 'avfalcategorie' (waste category) in the context of laboratory safety?

Accepted Answer

A classification system for chemical waste to ensure proper disposal.

Question 20

A student is required to calculate the amount of $$NaOH$$ needed to neutralize $$0.1$$ mol of $$HCl. $$What is the correct amount of $$NaOH$$ required?

Accepted Answer

$$0.1$$ mol

Laboratory Safety and Fire Classes: Essential Guidelines for Chemistry Students

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