Virtual Labs

Physical Sciences Physical Pharmaceutics II Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Determination of Angle of Repose of a Granular Material

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1. The angle of repose is defined as:

a: The angle between two adjacent particles Explanation

Explanation

b: The angle between a funnel and the surface Explanation

Explanation

c: The angle between the horizontal surface and the slope of a pile of powder Explanation

Explanation

d: The angle formed by the radius and the base Explanation

Explanation

2. The formula used to calculate the angle of repose is:

a: θ = tan⁻¹(r / h) Explanation

Explanation

b: θ = tan⁻¹(h / r) Explanation

Explanation

c: θ = sin⁻¹(h / r) Explanation

Explanation

d: θ = cos⁻¹(h / r) Explanation

Explanation

3. A smaller angle of repose indicates:

a: Better flowability of the powder Explanation

Explanation

b: Poor flowability of the powder Explanation

Explanation

c: Higher interparticle friction Explanation

Explanation

d: Higher cohesiveness Explanation

Explanation

4. The instrument used to form the powder pile in this experiment is:

a: Beaker Explanation

Explanation

b: Measuring cylinder Explanation

Explanation

c: Funnel Explanation

Explanation

d: Dropper Explanation

Explanation

5. The main factors influencing the angle of repose include:

a: Temperature, color, and density Explanation

Explanation

b: Particle size, shape, and moisture content Explanation

Explanation

c: Weight, volume, and color Explanation

Explanation

d: Porosity, color, and temperature Explanation

Explanation

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