NCERT Investigative Probe 2 - Variable Classification - Exploring the Investigative World of Science
Question: In an experiment investigating how oil temperature affects puri puffing time, identify the independent, dependent, and controlled variables.
Answer: Independent variable = Oil temperature; Dependent variable = Puffing time (seconds); Controlled variables = Dough thickness, diameter, and flour type.
Full step-by-step NCERT solution with diagrams on Something by Zero.