Test 23 — Life in the UK Test Practice
About Test 23 (Official 3rd Edition Handbook)
Test 23 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 23

Which British scientist led the development of the atomic bomb?
Correct Answer: Ernest Rutherford
Ernest Rutherford (1871–1937) was the physicist who led the foundational research that made nuclear weapons possible.
Working at the Cavendish Laboratory in Cambridge, he was the first to split the atomic nucleus in 1917 and to develop the nuclear model of the atom.
His work formed the scientific basis for the later development of the atomic bomb.