Test 39 — Life in the UK Test Practice
About Test 39 (Official 3rd Edition Handbook)
Test 39 is a free 24-question practice test for British citizenship naturalisation and Indefinite Leave to Remain (ILR / settlement) applicants in the United Kingdom. Every question is written directly from the official Home Office handbook, Life in the UK: A Guide for New Residents (3rd Edition), covering British values, UK history, society, and government. To pass the official Life in the UK Test (booking fee £50 at gov.uk), candidates must answer at least 18 out of 24 multiple-choice questions correctly (75% pass mark) within 45 minutes.
Life in the UK Test 39

What is the Bessemer process?
Correct Answer: An industrial process for the mass-production of steel
The Bessemer process is an industrial process for the mass-production of steel. Invented by Sir Henry Bessemer in the 1850s, it was the first inexpensive industrial process for the mass-production of steel from molten pig iron.
The process works by blowing air through molten iron to remove impurities. It dramatically reduced the cost and time required to produce steel, enabling the construction of steel railways, ships, bridges and buildings on a massive scale during the Industrial Revolution. It transformed Britain — and later the world — by making steel affordable for large-scale engineering projects.