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Questions and Answers
What is used as an indicator solution for the acidity test?
What is used as an indicator solution for the acidity test?
- Phenolphthalein indicator solution, 0.5% in 50% Alcohol (correct)
- Litmus paper
- Bromothymol blue indicator solution
- Methyl orange indicator solution
What is the purpose of the sodium hydroxide solution in the acidity test?
What is the purpose of the sodium hydroxide solution in the acidity test?
- To check for protein content
- To test for the presence of lactose
- To titrate the acid in the milk (correct)
- To neutralize the base in the milk
What instrument is used to measure precise volumes of liquids in the acidity test?
What instrument is used to measure precise volumes of liquids in the acidity test?
- Graduated cylinder
- Beaker
- Burette, 0.1 ml graduations (correct)
- Erlenmeyer flask
Which item is used for stirring the milk in the dish during the acidity test?
Which item is used for stirring the milk in the dish during the acidity test?
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What is used to deliver 10 ml of liquid during the acidity test?
What is used to deliver 10 ml of liquid during the acidity test?
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Study Notes
Acidity Test
- Phenolphthalein is used as an indicator solution to detect acidity.
Purpose of Solutions
- Sodium hydroxide solution is used to neutralize the acid in the milk.
Laboratory Equipment
- A pipette is used to measure precise volumes of liquids.
Laboratory Techniques
- A glass rod is used for stirring the milk in the dish during the test.
Measurement and Delivery
- A pipette is used to deliver 10 ml of liquid during the acidity test.
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