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100+ Free Valencian Community PAU General Sciences Practice Questions
Valencian Community PAU General Sciences (Ciencias Generales / Ciències Generals 2º Bachillerato) practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Valencian Community PAU General Sciences Exam
GVA PAU 2026
Valencian Managing Commission / Generalitat Valenciana & Public Universities (UV, UPV, UA, UJI, UMH)
Generalitat Valenciana Universitats
90 Mins
Official examination duration
PAU Valencian Community Regulations
Min 4.0
Minimum Access Phase score required to calculate university admission mark
Valencian University Admission Regulations
4 Domains
Scientific Method (20%), Energy & Environment (30%), Health & Biotech (25%), Materials & Tech (25%)
2º Bachillerato LOMLOE Syllabus
100
Practice questions available in this OpenExamPrep bank
OpenExamPrep
The Valencian Community PAU General Sciences exam evaluates core scientific literacy and analytical problem-solving across epistemology, energy transition, environmental sustainability, health, and material science for 2º Bachillerato General Track students. Note: local questions are an English-language MCQ study adaptation for the Valencian PAU examination.
Sample Valencian Community PAU General Sciences Practice Questions
Try these sample questions to test your Valencian Community PAU General Sciences exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1A team of environmental scientists measures the rate of oxygen production in an aquatic plant (Elodea) placed at varying distances from a light source. In this experiment, what role does the rate of oxygen production play?
A.The dependent variable
B.The independent variable
C.The controlled variable
D.The confounding variable
Explanation: The dependent variable is the factor observed and measured to evaluate the effect of the experimental treatment. Here, the rate of oxygen production responds directly to variations in light intensity.
2In a clinical trial testing a new therapeutic vaccine, why is a negative control group given an inert placebo administered alongside the experimental group?
A.To guarantee that every participant receives some active medical benefit during the trial.
B.To establish a baseline that isolates the specific physiological effect of the vaccine from placebo responses or natural recovery.
C.To eliminate the requirement for statistical significance testing when comparing results.
D.To double the sample size of the treatment group without incurring additional manufacturing costs.
Explanation: A negative control group establishes a baseline measurement under identical conditions without the active intervention. This isolates the genuine effect of the treatment from confounding variables like placebo response or spontaneous recovery.
3According to Karl Popper's demarcation criterion, which property must a hypothesis possess to be considered scientific?
A.It must be proven absolutely true beyond all future doubt by empirical induction.
B.It must be endorsed by unanimous consensus among established scientific authorities.
C.It must make testable predictions that can potentially be falsified by empirical evidence.
D.It must rely on self-evident intuitive principles requiring no experimental verification.
Explanation: Karl Popper demonstrated that scientific assertions are distinguished from pseudoscience by falsifiability—the inherent requirement that a hypothesis makes predictions capable of being contradicted by empirical observation.
4What is the primary function of peer review in the scientific publishing process?
A.To enforce commercial patent rights prior to public disclosure of research.
B.To automatically convert preliminary working hypotheses into universally accepted laws.
C.To censor non-standard research topics that conflict with political policies.
D.To evaluate methodological rigor, logical consistency, and empirical validity by independent experts before publication.
Explanation: Peer review involves critical evaluation of a manuscript by independent domain experts to ensure methodological soundness, proper statistical analysis, logical reasoning, and adherence to scientific standards.
5A laboratory analyst measures a certified standard sample of 10.00 mg/L nitrate five times and obtains values of 8.12, 8.11, 8.13, 8.12, and 8.11 mg/L. How should these results be characterized?
A.High precision but low accuracy
B.High accuracy but low precision
C.Both high accuracy and high precision
D.Neither accurate nor precise
Explanation: Precision refers to the repeatability of measurements (which are closely clustered around 8.12 mg/L), whereas accuracy refers to proximity to the true reference value (10.00 mg/L). High clustering far from the true value indicates high precision with low accuracy due to systematic bias.
6In a double-blind scientific trial, who is kept unaware of group assignments (active treatment vs placebo)?
A.Only the study participants receiving the treatments
B.Both the study participants and the researchers administering and evaluating outcomes
C.Only the data analysts performing the final statistical calculations
D.The ethics committee supervising the clinical trial safety
Explanation: In a double-blind design, both the experimental subjects and the clinical staff interacting with them or recording measurements are blinded to prevent participant placebo expectations and observer bias.
7An environmental sensor measures the concentration of dissolved oxygen in a water sample as 7.60 mg/L. The true reference value determined by chemical titration is 8.00 mg/L. What are the absolute error and relative percentage error of the sensor reading?
A.Absolute error = 0.40 mg/L; Relative error = 4.0%
B.Absolute error = 0.40 mg/L; Relative error = 5.26%
C.Absolute error = 0.40 mg/L; Relative error = 5.0%
D.Absolute error = 0.80 mg/L; Relative error = 10.0%
Explanation: Absolute error is |7.60 - 8.00| = 0.40 mg/L. Relative percentage error is (0.40 / 8.00) * 100% = 5.0%.
8Five independent measurements of soil pH at a sampling site yield: 6.0, 6.2, 6.4, 6.6, and 6.8. What are the sample mean and sample variance ($s^2$) of these measurements?
A.Mean = 6.4; Sample variance = 0.08
B.Mean = 6.4; Sample variance = 0.16
C.Mean = 6.5; Sample variance = 0.20
D.Mean = 6.4; Sample variance = 0.10
Explanation: Sum = 6.0 + 6.2 + 6.4 + 6.6 + 6.8 = 32.0. Mean = 32.0 / 5 = 6.4. Squared deviations: (-0.4)^2 + (-0.2)^2 + (0)^2 + (0.2)^2 + (0.4)^2 = 0.16 + 0.04 + 0 + 0.04 + 0.16 = 0.40. Sample variance s^2 = 0.40 / (5 - 1) = 0.40 / 4 = 0.10.
9A strong positive linear correlation ($r = 0.94$) is observed between regional ice cream sales and drownings in coastal swimming areas. What is the correct scientific interpretation of this finding?
A.Correlation does not imply causation; both variables are independently influenced by a common confounding variable (ambient summer temperature).
B.Ice cream consumption directly causes physiological cramps that increase drowning risk.
C.Drowning incidents cause increased psychological craving for ice cream among coastal visitors.
D.The high correlation coefficient proves a direct cause-and-effect relationship beyond scientific doubt.
Explanation: A high correlation coefficient demonstrates a mathematical relationship between two variables, but does not prove causation. Warm summer weather increases both ice cream sales and the number of people swimming, acting as a confounding variable.
10An experiment measures chemical reaction rate at temperatures between 20 °C and 50 °C. Predicting the reaction rate at 120 °C based on this linear regression line is an example of:
A.Interpolation within verified experimental bounds
B.Extrapolation beyond tested data limits, carrying high risk of error due to potential phase changes or enzyme denaturation
C.Direct empirical measurement
D.Standard error normalization
Explanation: Extrapolation involves estimating values outside the range of measured data points. It is risky because underlying physical or biological mechanisms (such as protein denaturation or solvent boiling) may change non-linearly at higher temperatures.
About the Valencian Community PAU General Sciences Practice Questions
Verified exam format metadata for Valencian Community PAU General Sciences (Ciencias Generales / Ciències Generals 2º Bachillerato) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.