VIRTUAL BIOLOGY LAB · LAB 16

🍞 Food Test: Starch

Identify starch in food samples using the iodine test model.

CBSE Classes 9–10Interactive practicalDrag & drop challengeStudent notebook

ADVERTISEMENT SPACE · RESPONSIVE LEADERBOARD PLACEHOLDER

🔎 Learning objective

Identify starch in food samples using the iodine test model.

3Hands-on matches

1Knowledge check

🧬 Interactive laboratory workspace

Explore the biological idea using the model controls. This is a conceptual classroom simulation.

🍞

Food Test: Starch

A blue-black colour is a positive result for starch.

PRACTICAL WORKBENCH · EXPERIMENT 16

🧪 Food-analysis bench: Run the iodine test for starch

A blue-black colour is a positive iodine test for starch.

Ready to begin

APPARATUS & EXPERIMENT CONTROLS

01 · Set up apparatus02 · Adjust variables03 · Run trial04 · Record reading

Food sample Sample dilution Iodine drops

◉Colour change▤

OBSERVATION & MEASUREMENTS

Food sample—

Sample dilution—

Iodine drops—

Starch result—Awaiting run

A blue-black colour is a positive iodine test for starch.

Scientific interpretation will appear after the trial.

Scientific note: Add iodine to the sample and compare the observed colour with the positive and negative controls.

Model conditionObservation focus

Model ready. Choose a condition and run the model to see an observation.

🧪 Hands-on drag & drop challenge

PRACTICAL SKILL BUILDER

Drag each item from the tray to its correct destination. On a phone or tablet, tap an item and then tap its destination. Complete all three matches to finish.

🧰 MATERIALS & CONCEPTS

🎯 DROP ZONES

Choose an item and place it in the matching zone.

📓 Observation notebook

Record your observation and export it for revision.

Key concept: A blue-black colour is a positive result for starch.

🎯 Quick knowledge check

Iodine solution tests for:

Select one answer to check your understanding.

ADVERTISEMENT SPACE · IN-CONTENT PLACEHOLDER