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Subjects · Leaving Cert Chemistry

Leaving Cert Chemistry: Lab safety

How often Lab safety comes up on the Chemistry papers, every year it was asked, and questions to try.

OL Asked on 1 of the last 10 Ordinary Level papers, most recently in 2024.

June 2027 is the first exam on the new Chemistry course. These come from the 2016–2026 papers, so read them as a guide.

Lab safety, Ordinary Level(7 marks)

Quick ones on Lab safety.

(a)Hazard pictogram showing a flame over a circle means?
  1. Flammable
  2. Oxidising
  3. Explosive
(b)Hazard pictogram showing a flame on its own means?
  1. Corrosive
  2. Oxidising
  3. Flammable
(c)Pictogram of liquid dripping from two test tubes onto a hand and a surface, eating into them?
  1. Corrosive
  2. Flammable
  3. Toxic
Show the answers

(a) Oxidising

(b) Flammable

(c) Corrosive

Your turn: Ordinary Level questions on Lab safety.

Ordinary Level

Asked on 1 of the last 10 Ordinary Level papers, most recently in 2024.

Every paper, year by year

YearWhere it came up
2026Not asked
2025Not asked
2024Q4(f)
2023Not asked
2022Not asked
2021Not asked
2019Not asked
2018Not asked
2017Not asked
2016Not asked

Links open the State Examinations Commission’s paper for that year.

More Lab safety questions

Lab safety, 2 marks

How should a flammable liquid like ethanol be heated?

  1. Directly over a Bunsen flame, stirring well
  2. In a sealed flask with a stopper to trap vapour
  3. In a water bath, with no naked flames nearby
Show the answer

In a water bath, with no naked flames nearby

Ethanol vapour catches fire easily. A water bath warmed by an electric heater or kettle water heats it gently with no flame.

Lab safety, 2 marks

How should leftover organic solvent such as cyclohexane be disposed of?

  1. Into the ordinary bin
  2. Into a labelled waste solvent container
  3. Down the sink with plenty of water
Show the answer

Into a labelled waste solvent container

Organic solvents are flammable and harm water life, so they are collected for safe disposal. Neutralised dilute acids and bases may go down the sink.

Other Chemistry topics

All of Leaving Cert Chemistry