- 1(current)
Q. No.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 vapor in the vapor phase. A suitable method for the extraction of these oils from the flowers is
| 1. | Distillation | 2. | Crystallisation |
| 3. | Distillation under pressure | 4. | Steam distillation |
Subtopic: Quantitative Analysis of Organic Compounds |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch Column I with Column II.
| Column I | Column II |
| A. Dumas method | 1. AgNO3 |
| B. Kjeldahl’s method | 2. Silica gel |
| C. Carius method | 3. Nitrogen gel |
| D. Chromatography | 4. Ammonium sulphate |
Codes:
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Quantitative Analysis of Organic Compounds |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below are two statements:
| Assertion (A): | Sulphur present in an organic compound can be estimated quantitatively by the Carius method. |
| Reason (R): | Sulphur is separated easily from other atoms in the molecule and gets precipitated as a light yellow solid. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
From NCERT
Subtopic: Quantitative Analysis of Organic Compounds |
To view explanation, please take trial in the course below.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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