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Key Facts: Concorso Vigile del Fuoco Exam

400

Posts advertised

Decreto dipartimentale n. 2488 del 2 luglio 2026

10x posts

Candidates admitted after preselection

Art. 7 del bando

26 years

Maximum age, raised to 37 for Corps volunteers

Art. 2 del bando

3 tests

Motor-aptitude tests, each passed at 21/30

Allegato A al bando

28 Sep 2026

Date the preselection modalities were published

Avviso CNVVF del 15 settembre 2026

EUR 0

Application fee

Ministero dell'Interno

The CNVVF 400-post vigile del fuoco competition was announced on 2 July 2026 and closed to applications on 3 August 2026. The bando fixes the four preselective subject types — Italian history from 1861, elements of chemistry and physics, logical-deductive and analytical reasoning, and IT plus English — but leaves the item count, duration and marking to a separate notice published on 28 September 2026. Candidates ranked within ten times the posts go on to three motor-aptitude tests, each passed at 21/30. Participation is free of charge. This independent English-language bank offers 100 practice MCQs across those four subject areas with teaching explanations.

Sample Concorso Vigile del Fuoco Practice Questions

Try these sample questions to review concepts for the Concorso Vigile del Fuoco exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Two atoms are isotopes of the same chemical element. Which statement correctly describes how their nuclei differ?

A.They contain the same number of protons but different numbers of neutrons

B.They contain the same number of neutrons but different numbers of protons

C.They contain different numbers of protons and the same number of electrons

D.They contain identical nuclei and differ only in the number of electron shells

Explanation: The atomic number Z, that is the number of protons, fixes the chemical identity of an element. Isotopes of one element therefore share Z but have different neutron numbers, so their mass number A = Z + N differs. Carbon-12 and carbon-14, for instance, both have 6 protons but 6 and 8 neutrons respectively, which is why they behave identically in chemical reactions yet differ in mass and nuclear stability.

2According to Boyle's Law, what happens to the pressure of an ideal gas in an enclosed rigid container if its volume is halved while the temperature remains strictly constant?

A.The pressure is doubled

B.The pressure is reduced by half

C.The pressure remains unchanged

D.The pressure quadruples

Explanation: Boyle's Law states that at constant temperature, the absolute pressure of a given mass of an ideal gas is inversely proportional to its volume (P1 * V1 = P2 * V2). Halving the available volume forces gas molecules to collide twice as frequently with container walls, exactly doubling the pressure.

3A closed, unvented compartment at atmospheric pressure contains trapped air that is heated from 27 °C to 327 °C by an adjacent fire. Applying Gay-Lussac's Law, what is the resulting absolute pressure inside the enclosure?

A.Approximately 2.0 bar

B.Approximately 1.2 bar

C.Approximately 4.0 bar

D.Approximately 12.0 bar

Explanation: Gay-Lussac's Law states that pressure is directly proportional to absolute temperature in kelvins (P1 / T1 = P2 / T2). Initial temperature T1 is 27 + 273.15 = 300.15 K and final temperature T2 is 327 + 273.15 = 600.15 K; because the absolute temperature doubles, the initial 1.0 bar pressure increases to approximately 2.0 bar.

4Under Charles's Law, how does the volume of an ideal gas behave when its absolute temperature is raised while external pressure is maintained constant?

A.The volume increases in direct proportion to the absolute temperature

B.The volume decreases exponentially with absolute temperature

C.The volume remains constant because gas mass is conserved

D.The volume decreases in inverse proportion to the absolute temperature

Explanation: Charles's Law dictates that at constant pressure, the volume of a given mass of gas is directly proportional to its thermodynamic temperature (V / T = constant). As thermal energy increases, molecular kinetic velocity rises, driving thermal expansion of smoke and gases toward available ventilation openings.

5Which mechanism of heat transfer is governed by Fourier's Law and represents the primary pathway through which heat propagates through a structural steel beam during a building fire?

A.Convection

B.Thermal radiation

C.Conduction

D.Mass advection

Explanation: Conduction is the transfer of heat within a solid body via microscopic collisions of particles and movement of free electrons, modeled mathematically by Fourier's Law (q = -k * dT/dx). Unprotected structural steel exhibits high thermal conductivity (approximately 45–55 W/m·K), rapidly transferring fire heat into unburned areas and losing load-bearing capacity.

6During an indoor compartment fire, hot smoke and toxic gases rise toward the ceiling and spread horizontally across the ceiling surface. Which heat transfer and fluid transport phenomenon primarily drives this flow?

A.Natural convection driven by buoyancy

B.Radiative photon diffusion

C.Static molecular conduction

D.Hydraulic capillary suction

Explanation: Convection transfers heat through bulk fluid movement driven by density differentials; heated gases expand, become less dense than surrounding ambient air, and rise as a buoyant thermal plume. Upon striking the ceiling, the plume turns horizontally to form a fast-moving hot gas layer known as a ceiling jet.

7According to the Stefan-Boltzmann Law, how does the radiant heat emitted by a blackbody flame change if its absolute temperature increases from 800 K to 1,600 K?

A.It doubles (increases by a factor of 2)

B.It quadruples (increases by a factor of 4)

C.It increases by a factor of 8

D.It increases by a factor of 16

Explanation: The Stefan-Boltzmann Law states that radiant power emitted per unit area of a blackbody is proportional to the fourth power of its thermodynamic temperature (E = sigma * T^4). Doubling the absolute temperature (1,600 K / 800 K = 2) increases the radiated heat flux by 2^4 = 16 times.

8In the modern periodic table, what property do all the elements in the same group (vertical column) share, and what does that imply about their chemistry?

A.They have the same number of electrons in the outermost shell, which gives them similar chemical behaviour

B.They have the same total number of electrons, which gives them the same atomic mass

C.They have the same number of occupied electron shells, which makes them equally reactive

D.They have the same number of neutrons, which makes them mutually interchangeable in reactions

Explanation: Groups are columns of the periodic table and collect elements with the same valence-electron configuration. Because bonding is governed almost entirely by the outermost electrons, group members react in similar ways: the alkali metals of group 1 all have a single valence electron and form +1 ions, while the noble gases of group 18 have a complete outer shell and are nearly inert. Periods, by contrast, are the horizontal rows and share the number of occupied shells.

9Sodium chloride (NaCl) dissolves readily in water and conducts electricity when molten, whereas methane (CH4) is a gas that does not conduct. Which difference in chemical bonding explains this?

A.NaCl is held together by ionic bonds between oppositely charged ions, while CH4 is held together by covalent bonds that share electron pairs

B.NaCl is held together by covalent bonds, while CH4 is held together by metallic bonds

C.Both are ionic, but NaCl contains a metal and therefore melts at a lower temperature

D.NaCl is held together by hydrogen bonds, while CH4 is held together by van der Waals forces only

Explanation: Sodium transfers its single valence electron to chlorine, producing Na+ and Cl- ions held in a crystal lattice by electrostatic attraction. Melting or dissolving that lattice frees the ions to move, which is why molten or dissolved NaCl conducts electricity. In methane, carbon and hydrogen share electron pairs in covalent bonds, forming discrete neutral molecules with no free charge carriers, so methane cannot conduct.

10A sealed cylinder contains 88 g of carbon dioxide (CO2), whose molar mass is 44 g/mol. How many moles of gas does the cylinder hold, and approximately how many molecules does that correspond to?

A.0.5 mol, about 3.0 x 10^23 molecules

B.2 mol, about 1.2 x 10^24 molecules

C.44 mol, about 2.6 x 10^25 molecules

D.88 mol, about 5.3 x 10^25 molecules

Explanation: The number of moles is the mass divided by the molar mass: n = 88 g / 44 g/mol = 2 mol. Multiplying by Avogadro's number gives the particle count: 2 mol x 6.022 x 10^23 molecules/mol = 1.204 x 10^24 molecules. The mole is simply a counting unit that links a laboratory-scale mass to the number of particles present.

About the Concorso Vigile del Fuoco Exam

The Concorso pubblico, per titoli ed esami, a 400 posti nella qualifica di vigile del fuoco (decreto dipartimentale n. 2488 del 2 luglio 2026) governs entry into the operational ranks of the Italian National Fire Corps. Article 7 of the bando subjects the examinations to a preselective multiple-choice test covering four subject types: Italian history from 1861 to the present; elements of chemistry and physics; logical-deductive and analytical reasoning; and the use of common IT equipment and applications together with the English language. Candidates who rank within ten times the 400 posts then face three motor-aptitude tests and the assessment of qualifications. This is independent practice by OpenExamPrep for the topics named in the bando: 100 English-language study questions, not a simulation of the official paper, whose item count, duration and marking the Department published only in its notice of 28 September 2026.

Exam sponsor: Ministero dell'Interno — Dipartimento dei Vigili del Fuoco, del Soccorso Pubblico e della Difesa Civile. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Article 7 of the bando makes the examination subject to a preselective multiple-choice test on four subject types, presented grouped and in this order: Italian history from 1861 to the present; elements of chemistry and physics; logical-deductive and analytical items probing reasoning ability; and items on the use of the most widespread IT equipment and applications and on the English language. Marking is automated, the score does not count towards the final merit mark, and candidates ranked within ten times the 400 posts are admitted to the examinations proper. Those consist of three motor-aptitude tests under Annex A — balance, strength, coordination and motor reaction (three modules: high beam traverse, pull-ups, press-ups with bar contact); endurance; and swimming ability — each passed with at least 21/30, followed by the assessment of qualifications under Annex B.

Time Limit

Not published: the duration of the preselective test is set by the ministerial notice of 28 September 2026.

Passing Score

Competitive ranking threshold: admission goes to the candidates ranked within ten times the posts advertised, and the preselection score does not contribute to the final merit mark.

Exam / Certification Fees

€0 (Free of charge)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30% of this bank

Elementi di Chimica e Fisica (Elements of Chemistry and Physics)

General chemistry and physics at upper secondary level: atomic structure and isotopes, the periodic table, ionic and covalent bonding, the mole and molar mass, acids, bases and the pH scale, oxidation and reduction; gas laws (Boyle, Charles, Gay-Lussac), heat transfer by conduction, convection and radiation, thermal inertia, hydrostatics (Stevin's law, Pascal's principle), the continuity equation and Bernoulli's theorem, friction losses, Newton's third law, Ohm's law and electrical power, and work, energy and power.

20% of this bank

Storia d'Italia dal 1861 ad Oggi (History of Italy from 1861 to Present)

Evolution of Italy from the 1861 proclamation of the Kingdom of Italy to contemporary times: Risorgimento, annexation of Rome (Breach of Porta Pia 1870), Giolittian Era, World War I (Caporetto, Piave line, Vittorio Veneto), Fascist regime, Lateran Pacts of 1929, World War II, Resistance movement, June 2 1946 institutional referendum, 1948 Republican Constitution, Economic Miracle, 1970s Years of Lead, and European integration.

20% of this bank

Logica Deduttiva e Analitica (Deductive and Analytical Reasoning)

Deductive, conditional, syllogistic, verbal, numerical, and spatial logic skills: formal categorical syllogisms, propositional logic (modus ponens, modus tollens, De Morgan's laws, necessary vs sufficient conditions), verbal analogies, numerical sequences, spatial transformations, and analytical data interpretation.

15% of this bank

Informatica di Base (Computer Science Fundamentals)

Computer hardware architectures (CPU, RAM, SSD), operating systems, computer networking (LAN, TCP/IP, DNS, IPv4/IPv6), cybersecurity (phishing, encryption, 2FA, 3-2-1 backup), office productivity applications, cloud computing, and Italian digital public administration (SPID, CIE, PEC).

15% of this bank

Lingua Inglese (English Language Proficiency)

English grammar, syntax, technical vocabulary, and operational reading comprehension: verb tenses, modal verbs of obligation and deduction, conditionals, passive voice in technical manuals, civil protection terminology, and emergency rescue protocols.

Preparing for the Concorso Vigile del Fuoco Exam

What You Need to Know

Passing score: Competitive ranking threshold: admission goes to the candidates ranked within ten times the posts advertised, and the preselection score does not contribute to the final merit mark.
Assessment: Article 7 of the bando makes the examination subject to a preselective multiple-choice test on four subject types, presented grouped and in this order: Italian history from 1861 to the present; elements of chemistry and physics; logical-deductive and analytical items probing reasoning ability; and items on the use of the most widespread IT equipment and applications and on the English language. Marking is automated, the score does not count towards the final merit mark, and candidates ranked within ten times the 400 posts are admitted to the examinations proper. Those consist of three motor-aptitude tests under Annex A — balance, strength, coordination and motor reaction (three modules: high beam traverse, pull-ups, press-ups with bar contact); endurance; and swimming ability — each passed with at least 21/30, followed by the assessment of qualifications under Annex B.
Time limit: Not published: the duration of the preselective test is set by the ministerial notice of 28 September 2026.
Exam / certification fees: €0 (Free of charge) Official sources

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Concorso Vigile del Fuoco: Suggested Study Strategy

1Treat 'elementi di chimica e fisica' as general upper-secondary science, not fire-service technique: atomic structure, the periodic table, bonding, the mole, pH, redox, gas laws, heat transfer, hydrostatics, Ohm's law, and work and power.

2Review post-1861 Italian history chronologically: Risorgimento milestones, the Breach of Porta Pia, the Giolittian era, the First World War from Caporetto to Vittorio Veneto, Fascism and the Lateran Pacts, the Resistance, the 2 June 1946 referendum, the 1948 Constitution, the Cassa per il Mezzogiorno, and the Years of Lead.

3Drill logical-deductive items under time pressure: categorical syllogisms, modus ponens and modus tollens, the fallacies of affirming the consequent and denying the antecedent, De Morgan's laws, analogies, number series, and spatial transformations.

4Do not plan around an assumed number of questions, duration or penalty scheme: the bando leaves all three to the ministerial notice of 28 September 2026, so confirm them on vigilfuoco.it and inpa.gov.it before settling on a pacing or guessing strategy.

5Cover Italian digital administration (SPID, CIE, PEC under the CAD) alongside standard computing concepts (CPU and memory, file paths, TCP/IP, DNS, IPv4 and IPv6, phishing and multi-factor authentication, spreadsheet references).

6Practise English grammar and comprehension on operational passages: tenses with past time markers, modals of obligation, first and third conditionals, the passive voice, phrasal verbs, and reading for specific detail.

Frequently Asked Questions

What does the bando say about the structure of the preselective test?

Article 7 of decreto dipartimentale n. 2488 of 2 July 2026 states only that the preselective test consists of multiple-choice items on four subject types, grouped and ordered as: Italian history from 1861 to the present; elements of chemistry and physics; logical-deductive and analytical reasoning; and the use of the most widespread IT equipment and applications together with English. Marking is automated and the score does not count towards the final merit mark.

How many questions are in the official preselective test and how long does it last?

The bando does not say. Article 6 deferred the modalities of the preselective test to a separate notice; the Department's notice of 15 September 2026 confirmed that the information would be published on 28 September 2026. Treat any item count, duration or marking scheme circulated before that notice as unverified.

What are the age and educational requirements for the CNVVF firefighter competition?

Article 2 of the bando requires Italian citizenship, enjoyment of political rights, and not having turned 26 by the application deadline. That limit rises by the length of military service actually performed, up to three years, and is set at 37 for Corps volunteers enrolled in the registers for at least one year. Candidates need an upper secondary school diploma, which may be obtained by the date of the preselective test, plus the psycho-physical and aptitude requirements of D.M. 166/2019.

What phases follow the preselective test?

Article 8 and Annex A set three motor-aptitude tests: Test 1 on balance, strength, coordination and motor reaction, made up of three modules (high beam traverse in 3 minutes, full pull-ups in 1 minute, press-ups with bar contact in 1 minute); Test 2 on endurance; and Test 3 on swimming ability. Each test, and each module of Test 1, must score at least 21/30. Qualifications are then assessed under Annex B, worth up to 5 points.

Why is this practice bank in English when the competition is held in Italian?

The competition is conducted entirely in Italian. This bank is an independent English-language MCQ study adaptation by OpenExamPrep, written so that candidates preparing in English can drill the subject matter named in the bando while the Italian names of institutions, laws and historical events are preserved. It is not an official translation and does not reproduce the official paper's format.