Virtual Labs

Chemical Sciences Virtual Chemistry Lab Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

HPTLC-Densitometric Determination of Urea in Milk

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Beginner

Intermediate

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1. Rf stands for-

a: Reference Factor Explanation

Explanation

b: Relative Factor Explanation

Explanation

c: Retardation Factor Explanation

Explanation

d: Retention Factor Explanation

Explanation

2. What will be the nature of sample is used in HPTLC analysis?

a: Partially Soluble Explanation

Explanation

b: Insoluble Explanation

Explanation

c: Saturated Solution Explanation

Explanation

d: Completely Soluble Explanation

Explanation

3. How many lamps are present in densitometer of HPTLC used for analysis?

a: Four Explanation

Explanation

b: Three Explanation

Explanation

c: Two Explanation

Explanation

d: One Explanation

Explanation

4. Which technique is used for sample application in HPTLC?

a: Manual spotting with capillary tube Explanation

Explanation

b: Automatic sample applicator (Linomat or CAMAG sprayer) Explanation

Explanation

c: Dipping the plate in sample solution Explanation

Explanation

d: Pouring the sample onto the plate Explanation

Explanation

5. What is the typical particle size of silica gel used in HPTLC plates?

a: 50-100 μm Explanation

Explanation

b: 5-10 μm Explanation

Explanation

c: 1-2 μm Explanation

Explanation

d: 100-200 μm Explanation

Explanation

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