Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Experiment name

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1.What is the significance of centrifuging the butyrometer mixture?

a: To sterilize the milk Explanation

Explanation

b: To separate the fat layer from SNF Explanation

Explanation

c: To mix the acid and milk Explanation

Explanation

d: To evaporate the fat Explanation

Explanation

2.If the corrected lactometer reading is 28 and fat percentage is 4.0%, what is the SNF %?

a: 8.0% Explanation

Explanation

b: 8.55% Explanation

Explanation

c: 9.15% Explanation

Explanation

d: 10.25% Explanation

Explanation

3.The corrected lactometer reading (CLR) is calculated by adjusting for:

a: Specific gravity Explanation

Explanation

b: Fat content Explanation

Explanation

c: Temperature deviation from 40°C Explanation

Explanation

d: Protein content Explanation

Explanation

4.What is the duration and speed of centrifugation in the SNF test procedure?

a: 2 minutes at 1500 rpm Explanation

Explanation

b: 5 minutes at 1200 rpm Explanation

Explanation

c: 4 minutes at 1100 rpm Explanation

Explanation

d: 10 minutes at 800 rpm Explanation

Explanation

5.Why is a water-filled butyrometer used during centrifugation?

a: To determine SNF in water Explanation

Explanation

b: For temperature control Explanation

Explanation

c: To balance the centrifuge Explanation

Explanation

d: To absorb heat Explanation

Explanation

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