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 |
67%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The correct order of decreasing stability of the following carbocations is:
| I | \( \begin{aligned} &~~~~~~~~~~~~\oplus\\ & CH_3 - CH-CH_3 \end{aligned}\) |
| II | \( \begin{aligned} &~~~~~~~~~~~~\oplus\\ & CH_3 - CH-OCH_3\end{aligned}\) |
| III | \( \begin{aligned} & ~~~~~~~~~~~~\oplus\\ &CH_3 - CH-CH_2- OCH_3\end{aligned}\) |
| 1. | II > I > III | 2. | I > II > III |
| 3. | II < I < III | 4. | I < II < III |
Subtopic: Electron Displacement Effects |
58%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Subtopic: Electron Displacement Effects |
81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Match the terms mentioned in Column-I with the terms in Column-II.
| Column-I (Term) | Column-II (Definition) | ||
| A. | Carbocation | (i) | Species that can receive a pair of electrons. |
| B. | Nucleophile | (ii) | Conjunction of electrons of \(C-H ~\sigma-\) bond with the empty p-orbital present in adjacent positively charged carbon. |
| C. | Hyperconjugation | (iii) | sp2 hybridised carbon with empty p-orbital. |
| D. | Electrophile | (iv) | Species that can donate a pair of electrons. |
| Options: | A | B | C | D |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (iv) | (i) | (iii) | (ii) |
Subtopic: Hybridisation & Structure of Carbon Compounds |
82%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Match 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 |
Choose the correct answer from the options given below:
| 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 |
75%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given below are two statements:
| Assertion (A): | Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97°C ) and propanone (boiling point 56°C ). |
| Reason (R): | Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation. |
| 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. |
Subtopic: Qualitative Analysis of Organic Compounds |
85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given below are two statements:
| Assertion (A): | Energy of resonance hybrid is equal to the average of energies of all canonical forms. |
| Reason (R): | Resonance hybrid cannot be presented by a single structure. |
| 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. |
Subtopic: Aromaticity & Polarity |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given below are two statements:
| Assertion (A): | Pent-1-ene and pent-2-ene are position isomers. |
| Reason (R): | Position isomers differ in the position of a functional group or a substituent. |
| 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. |
Subtopic: Structural Isomers |
87%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given below are two statements:
| Assertion (A): | All the carbon atoms in H2C = C = CH2 are sp2-hybridised. |
| Reason (R): | In this molecule, all the carbon atoms are attached to each other by double bonds. |
| 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. |
Subtopic: Hybridisation & Structure of Carbon Compounds |
68%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Given 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. |
Subtopic: Quantitative Analysis of Organic Compounds |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
© 2025 GoodEd Technologies Pvt. Ltd.