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Food Tests Virtual Lab

អំពីការពិសោធន៍និម្មិតនេះ

Identify nutrients in three unknown samples using iodine, Benedict’s, Biuret and the lipid emulsion test. Compare every result with positive and negative controls.

អ្វីដែលសិស្សអាចស្វែងរកបាន

  • Can a blue Benedict’s tube without heating prove that reducing sugar is absent?
  • Idealised qualitative tests using separate aliquots. Benedict’s requires a hot water bath; the lipid test models ethanol followed by water. Colour intensity does not measure concentration here. Virtual practical only; follow school procedures for real experiments.

គោលបំណងសិក្សា

  1. 1Can a blue Benedict’s tube without heating prove that reducing sugar is absent?

សំណួរដែលគ្រូតែងសួរ

Can a blue Benedict’s tube without heating prove that reducing sugar is absent?

No. Complete the heated test first. A positive result forms an orange-red precipitate; iodine turns blue-black for starch, Biuret violet for protein, and lipids form a cloudy white emulsion.

About the model

Idealised qualitative tests using separate aliquots. Benedict’s requires a hot water bath; the lipid test models ethanol followed by water. Colour intensity does not measure concentration here. Virtual practical only; follow school procedures for real experiments.

បញ្ចូលការពិសោធន៍និម្មិតនេះ

ដាក់វាចូលទៅក្នុង LMS ប្លក់ ឬគេហទំព័រថ្នាក់រៀនរបស់អ្នក — ឥតគិតថ្លៃ។

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