Class 9 Exam > Class 9 Questions > The fragrance of flowers is due to the presen...
Start Learning for Free
The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:
- a)Distillation under reduced pressure
- b)Distillation
- c)Steam distillation
- d)Crystallisation
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The fragrance of flowers is due to the presence of some steam volatile...
A suitable method for the extraction of these oils from the flowers is Steam distillation
Most Upvoted Answer
The fragrance of flowers is due to the presence of some steam volatile...
Steam Distillation:
Steam distillation is a suitable method for the extraction of essential oils from flowers. It is a technique that utilizes steam to extract the volatile compounds from the plant material. Here's how the process works:
1. Introduction:
- Start by introducing the concept of essential oils and their presence in flowers.
- Explain that essential oils are steam volatile organic compounds responsible for the fragrance of flowers.
- Mention that these oils are generally insoluble in water at room temperature.
2. Steam Volatility:
- Describe how essential oils have the property of being steam volatile, meaning they can vaporize when heated.
- Explain that this property allows for their extraction using steam distillation.
3. Steam Distillation Process:
- Explain the process of steam distillation step by step:
- The flowers are placed in a distillation apparatus, usually a still or a distillation flask.
- Steam is then passed through the plant material, causing the essential oils to vaporize.
- The steam and vaporized oils rise up into a condenser, where they are cooled and condensed back into a liquid form.
- The condensed mixture of water and essential oils is then collected in a separate container, with the essential oils floating on top of the water.
- The essential oils can be separated from the water by using a separating funnel or other methods.
4. Miscibility with Water Vapor:
- Describe how essential oils are generally insoluble in water at room temperature.
- However, they are miscible with water vapor in the vapor phase.
- Clarify that this property allows the essential oils to be carried along with the steam during the distillation process.
5. Advantages of Steam Distillation:
- Discuss the advantages of steam distillation for extracting essential oils:
- It is a gentle method that preserves the delicate fragrance and properties of the oils.
- It allows for the extraction of a wide range of volatile compounds.
- It is a relatively simple and cost-effective technique.
6. Conclusion:
- Summarize the main points discussed, emphasizing the suitability of steam distillation for extracting essential oils from flowers due to their steam volatility and miscibility with water vapor.
- Restate that the correct option for the extraction method in the given question is "C) Steam distillation."
Steam distillation is a suitable method for the extraction of essential oils from flowers. It is a technique that utilizes steam to extract the volatile compounds from the plant material. Here's how the process works:
1. Introduction:
- Start by introducing the concept of essential oils and their presence in flowers.
- Explain that essential oils are steam volatile organic compounds responsible for the fragrance of flowers.
- Mention that these oils are generally insoluble in water at room temperature.
2. Steam Volatility:
- Describe how essential oils have the property of being steam volatile, meaning they can vaporize when heated.
- Explain that this property allows for their extraction using steam distillation.
3. Steam Distillation Process:
- Explain the process of steam distillation step by step:
- The flowers are placed in a distillation apparatus, usually a still or a distillation flask.
- Steam is then passed through the plant material, causing the essential oils to vaporize.
- The steam and vaporized oils rise up into a condenser, where they are cooled and condensed back into a liquid form.
- The condensed mixture of water and essential oils is then collected in a separate container, with the essential oils floating on top of the water.
- The essential oils can be separated from the water by using a separating funnel or other methods.
4. Miscibility with Water Vapor:
- Describe how essential oils are generally insoluble in water at room temperature.
- However, they are miscible with water vapor in the vapor phase.
- Clarify that this property allows the essential oils to be carried along with the steam during the distillation process.
5. Advantages of Steam Distillation:
- Discuss the advantages of steam distillation for extracting essential oils:
- It is a gentle method that preserves the delicate fragrance and properties of the oils.
- It allows for the extraction of a wide range of volatile compounds.
- It is a relatively simple and cost-effective technique.
6. Conclusion:
- Summarize the main points discussed, emphasizing the suitability of steam distillation for extracting essential oils from flowers due to their steam volatility and miscibility with water vapor.
- Restate that the correct option for the extraction method in the given question is "C) Steam distillation."
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer?
Question Description
The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer?.
The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer?.
Solutions for The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of these oils from the flowers is:a)Distillation under reduced pressureb)Distillationc)Steam distillationd)CrystallisationCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup