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Bottled juices are clarified by the use ...

Bottled juices are clarified by the use of

A

Pectinases

B

Proteases

C

Lipases

D

Both (1) & (2)

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks about the clarification process of bottled juices. Bottled juices are typically clearer than homemade juices, which often have some turbidity. 2. **Identifying the Clarification Process**: The clarity in bottled juices is achieved through the use of certain enzymes. These enzymes help in breaking down components that contribute to the turbidity of the juice. 3. **Recognizing the Relevant Enzyme**: The specific enzyme used for clarifying juices is pectinase. Pectinase is an enzyme that breaks down pectin, a substance found in the cell walls of plants that can cause cloudiness in juices. 4. **Differentiating Other Enzymes**: It is important to note that other enzymes like proteases (which break down proteins) and lipases (which break down lipids) are not used for clarifying juices. Therefore, they are not the correct answers. 5. **Conclusion**: The correct answer to the question is that bottled juices are clarified by the use of pectinases. **Final Answer**: Bottled juices are clarified by the use of **pectinases**. ---
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A chemist opened a cupboard to find four bottles containing water solutions, each of which has lost its label. Bottles 1,2,3 contained colourless solutions, Whilst bottle 4 contained a blue solution. The labels from the bottles were lying scattered ont he floor of the cupboard. They were copper (II) sulphate sodium carbonate lead nitrate hydrochloric acid By mixing sammples of teh contents of the bottles, in pairs, the chemist made the following observations: (i) Bottle 1 + Bottle 2 white precipitate (ii) Bottle 1 + bottle 3 white precipitate (iii) Bottle 1 + Bottle 4 white precipitate (iv) Bottle 2 +Bottle 3 colourless gas evolved (v) Bottle 2+ Bottle 4 no visible reaction (vi) bottle 3 +bottle 4 blue precipitate Q. Nature of gas evolved in observation (iv) is:

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