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Exam Review

Key Facts: Basque PAU Chemistry Exam

90 Minutes

Exam time duration

UPV/EHU PAU Commission

EUR 86.33

Ordinary registration fee

UPV/EHU 2026 Fees

0–10 Scale

Grading scale for Bachillerato and PAU exams

Spanish Ministry of Education

1 Core Blocks

Official syllabus domains

UPV/EHU Syllabus

100 Questions

Practice bank size in OpenExamPrep

OpenExamPrep

Basque Country PAU Chemistry (UPV/EHU 2026) is a 90-minute university entrance exam assessing 2º Bachillerato syllabus domains.

Sample Basque PAU Chemistry Practice Questions

Try these sample questions to review concepts for the Basque PAU Chemistry exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 59+ question experience with AI tutoring.

1If the enthalpy of reaction is -10 kJ/mol, what type of reaction is it?
A.Exothermic
B.Endothermic
C.Isothermic
D.Isobaric
Explanation: A negative enthalpy change (-10 kJ/mol) indicates that heat is released by the system, which defines an exothermic reaction.
2For the reaction A <-> B with Kc = 2, if [A] = 1M, what is [B] at equilibrium?
A.2 M
B.0.50 M
C.4 M
D.0 M
Explanation: Kc = [B]/[A]. Since [A] = 1M and Kc = 2, [B] must be 2M.
3What is the pH of a solution with [H+] = 10^-4 M?
A.4
B.10
C.-4
D.5
Explanation: pH is defined as -log[H+]. Therefore, -log(10^-4) = 4.
4In the reaction Zn + Cu2+ -> Zn2+ + Cu, what is the oxidation state of Zn after the reaction?
A.+2
B.0
C.+1
D.-2
Explanation: Zn goes from an oxidation state of 0 (elemental) to +2 in Zn2+. It is oxidized by losing 2 electrons.
5What is the functional group of CH3-CH2-OH?
A.Alcohol
B.Aldehyde
C.Ketone
D.Carboxylic acid
Explanation: The -OH group bonded to a saturated carbon atom characterizes an alcohol.
6How many moles of H2 are produced when 6 moles of Zn react with excess HCl?
A.6 moles
B.12 moles
C.3.0 moles
D.7 moles
Explanation: The balanced equation is Zn + 2HCl -> ZnCl2 + H2. For every mole of Zn, one mole of H2 is produced. Thus 6 moles of Zn produce 6 moles of H2.
7If the enthalpy of reaction is -70 kJ/mol, what type of reaction is it?
A.Exothermic
B.Endothermic
C.Isothermic
D.Isobaric
Explanation: A negative enthalpy change (-70 kJ/mol) indicates that heat is released by the system, which defines an exothermic reaction.
8For the reaction A <-> B with Kc = 8, if [A] = 1M, what is [B] at equilibrium?
A.8 M
B.0.12 M
C.16 M
D.0 M
Explanation: Kc = [B]/[A]. Since [A] = 1M and Kc = 8, [B] must be 8M.
9What is the pH of a solution with [H+] = 10^-10 M?
A.10
B.4
C.-10
D.11
Explanation: pH is defined as -log[H+]. Therefore, -log(10^-10) = 10.
10How many moles of H2 are produced when 12 moles of Zn react with excess HCl?
A.12 moles
B.24 moles
C.6.0 moles
D.13 moles
Explanation: The balanced equation is Zn + 2HCl -> ZnCl2 + H2. For every mole of Zn, one mole of H2 is produced. Thus 12 moles of Zn produce 12 moles of H2.

About the Basque PAU Chemistry Exam

The Basque Country PAU Chemistry examination (Prueba de Acceso a la Universidad, UPV/EHU 2026) is the official standardized assessment for 2º Bachillerato students seeking university entrance in Spain. This practice bank provides 100 high-quality questions with full step-by-step explanations.

Exam sponsor: PAU Organising Commission of the Basque Country / UPV/EHU. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Written 90-minute standardized exam. Local practice items are an English-language MCQ study adaptation of the official open/semi-constructed Basque Country PAU paper, not an official translation or format simulation.

Time Limit

90 minutes (1.5 hours)

Passing Score

Marked on a 0–10 scale. Minimum 4.0 required in Access Phase to combine with Bachillerato GPA (60% Bachillerato + 40% PAU >= 5.0 to pass).

Exam / Certification Fees

EUR 86.33 ordinary registration fee (UPV/EHU 2026 PAU)

Exam sponsor website

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

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.

100%

Chemistry

Questions covering chemistry concepts and applications.

Preparing for the Basque PAU Chemistry Exam

What You Need to Know

  • Passing score: Marked on a 0–10 scale. Minimum 4.0 required in Access Phase to combine with Bachillerato GPA (60% Bachillerato + 40% PAU >= 5.0 to pass).
  • Assessment: Written 90-minute standardized exam. Local practice items are an English-language MCQ study adaptation of the official open/semi-constructed Basque Country PAU paper, not an official translation or format simulation.
  • Time limit: 90 minutes (1.5 hours)
  • Exam / certification fees: EUR 86.33 ordinary registration fee (UPV/EHU 2026 PAU) Official sources

Using Our Practice Resources

  • Work through all 59 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Basque PAU Chemistry: Suggested Study Strategy

1Review key 2º Bachillerato Chemistry concepts and authoritative definitions.
2Practice solving past open and problem-solving questions under timed 90-minute conditions.
3Pay attention to precise terminology and clear step-by-step reasoning in explanations.

Frequently Asked Questions

What is the registration fee for PAU Chemistry in the Basque Country?

The fee is EUR 86.33 for ordinary registration for the PAU at UPV/EHU for 2026.

How is the PAU Chemistry paper scored?

The paper is scored from 0 to 10 points. A minimum score of 4.0 points in the Access Phase is required to average with Bachillerato grades.

How long is the PAU Chemistry exam?

The examination duration is 90 minutes (1.5 hours).

What languages are available for the exam at UPV/EHU?

The official exam paper is provided in Basque (Euskara) and Spanish (Castellano).