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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

To determine the viscosity of liquid by using Ostwald’s Viscometer

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1. The property that represents a liquid’s internal resistance to flow is known as:

a: Density Explanation

Explanation

b: Surface tension Explanation

Explanation

c: Viscosity Explanation

Explanation

d: Specific gravity Explanation

Explanation

2. The Ostwald viscometer works on the principle of:

a: Bernoulli’s Theorem Explanation

Explanation

b: Poiseuille’s Law Explanation

Explanation

c: Newton’s Law of Viscosity Explanation

Explanation

d: Boyle’s Law Explanation

Explanation

3. In an Ostwald viscometer, flow time of a liquid is measured between:

a: Two pressure points Explanation

Explanation

b: Two temperature levels Explanation

Explanation

c: Two fixed marks on the viscometer Explanation

Explanation

d: Two density values Explanation

Explanation

4. The SI unit of viscosity is:

a: Poise Explanation

Explanation

b: Pascal-second (Pa·s) Explanation

Explanation

c: dyne·s/cm² Explanation

Explanation

d: Newton per meter Explanation

Explanation

5. Temperature control is essential during viscosity measurement because:

a: Viscosity increases with temperature Explanation

Explanation

b: Viscosity decreases with temperature Explanation

Explanation

c: Density increases with temperature Explanation

Explanation

d: Density remains constant with temperature Explanation

Explanation

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