SZF IOS · Reasoning and Aptitude
Experiment-based reasoning, cause-effect, hypothesis testing in PCB contexts.
Study notes are still being prepared.
Don't wait — Shishya can teach you this topic right now, on demand.
Ask Shishya to teach this →Shishya is your personal tutor for this topic. Pick a starter or open a free chat.
Q1 · Scientific Reasoning · EASY
A student performs an experiment to test the effect of light on plant growth. She places two identical plants in separate rooms. Plant A receives sunlight for 6 hours daily, while Plant B is kept in complete darkness. After 2 weeks, Plant A shows healthy green leaves and growth, while Plant B appears yellowish and shows stunted growth. What is the most logical conclusion from this experiment?
Q2 · Scientific Reasoning · MEDIUM
In a chemistry lab, a student adds zinc metal to dilute hydrochloric acid in a test tube and observes rapid bubbling. When the same student adds zinc to dilute acetic acid (vinegar), bubbling occurs but much more slowly. The student then adds copper metal to dilute hydrochloric acid and observes no bubbling. Which hypothesis best explains all three observations?
Q3 · Scientific Reasoning · HARD
A researcher investigates the relationship between the angle of incidence and angle of refraction when light passes from air into glass. She measures multiple angle pairs and plots them on a graph. She notices that as the angle of incidence increases from 0° to 60°, the angle of refraction increases but at a slower rate. She hypothesizes that there exists a constant relationship between sine of angle of incidence and sine of angle of refraction. To test this hypothesis conclusively, which additional experiment would be most appropriate?
Q4 · Scientific Reasoning · EASY
A student observes that ice cubes placed in a glass of water gradually decrease in size. Which scientific principle best explains this observation?
Q5 · Scientific Reasoning · MEDIUM
A scientist notices that bread left in a sealed container develops mold faster at 30°C than at 10°C. What scientific reasoning explains this observation?