Ceist Eile

Ceist Eile is in development. Features, questions and prices may change while we refine it.

Subjects · Leaving Cert Chemistry

Leaving Cert Chemistry: Industrial chemistry

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

HL Asked on 2 of the last 10 Higher Level papers, most recently in 2021.

OL Asked on 1 of the last 10 Ordinary Level papers, most recently in 2023.

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

Industrial chemistry, Higher Level(5 marks)

Quick ones on Industrial chemistry.

(a)Main industrial source of ethene?
  1. Fermentation of sugar from sugar cane
  2. Cracking of naphtha from crude oil
  3. Electrolysis of brine (salt water)
(b)Industrial process used to manufacture ammonia?
  1. The Ostwald process
  2. The Contact process
  3. The Haber process
Show the answers

(a) Cracking of naphtha from crude oil

(b) The Haber process

Your turn: Higher Level questions on Industrial chemistry.

Higher Level

Asked on 2 of the last 10 Higher Level papers, most recently in 2021.

Every paper, year by year

YearWhere it came up
2026Not asked
2025Not asked
2024Not asked
2023Not asked
2022Not asked
2021Q9
2019Not asked
2018Not asked
2017Not asked
2016Q7

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

More Industrial chemistry questions

Industrial chemistry, 3 marks

Why does industry use a catalyst even though it does not change the yield?

  1. It increases the equilibrium yield of product so that less raw material is wasted
  2. It removes the need to purify the product, cutting processing costs
  3. It gives the same output faster and at a lower temperature, cutting costs
Show the answer

It gives the same output faster and at a lower temperature, cutting costs

Lower temperature means less fuel and less plant wear, and a faster rate means more product per day from the same equipment.

Ordinary Level

Asked on 1 of the last 10 Ordinary Level papers, most recently in 2023.

Every paper, year by year

YearWhere it came up
2026Not asked
2025Not asked
2024Not asked
2023Q11(b)
2022Not asked
2021Not asked
2019Not asked
2018Not asked
2017Not asked
2016Not asked

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

More Industrial chemistry questions

Industrial chemistry, 2 marks

Two gases reacted together in the Haber process?

  1. Nitrogen and oxygen
  2. Hydrogen and chlorine
  3. Nitrogen and hydrogen
Show the answer

Nitrogen and hydrogen

N2 + 3H2 gives 2NH3, ammonia. An iron catalyst is used.

Other Chemistry topics

All of Leaving Cert Chemistry