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Q. No.Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the option given below:
1. Both Statement I and Statement II are incorrect.
2. Statement I is correct but Statement II is incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Both Statement I and Statement II are correct.
| Statement I : | The boiling point of three isomeric pentanes follows the order \(\small\text { n-Pentane }>\text { Isopentane }>\text { Neopentane }\) |
| Statement II : | When branching increases, the molecule attains the shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point. |
1. Both Statement I and Statement II are incorrect.
2. Statement I is correct but Statement II is incorrect.
3. Statement I is incorrect but Statement II is correct.
4. Both Statement I and Statement II are correct.
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
77%
From NCERT
NEET - 2024
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2024
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Phenanthrene is an aromatic compound and follows Huckel's \((4 n+2) \pi\) electron rule. The value of \(n\) is:
1. 0
2. 1
3. 2
4. 3
1. 0
2. 1
3. 2
4. 3
Subtopic: Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
83%
From NCERT
NEET - 2024
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NEET 2025 - Target Batch
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Match List -I with List -II:
Choose the correct answer from the options given below:
1. A-II, B-IV, C-III, D-I
2. A-II, B-III, C-IV, D-I
3. A-II, B-III, C-I, D-IV
4. A-IV, B-I, C-III, D-II
| List-I (Reactions) |
List-II (Products) |
||
| A. |  |
I. | \(\small\mathrm{{\left({CH}_3\right)_2 {C}={O}+{CO}_2+\mathrm{H}_2 {O} }}\) |
| B. |  |
II. |  |
| C. |  |
III. |  |
| D. |  |
IV. | \(\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{OH} \) |
Choose the correct answer from the options given below:
1. A-II, B-IV, C-III, D-I
2. A-II, B-III, C-IV, D-I
3. A-II, B-III, C-I, D-IV
4. A-IV, B-I, C-III, D-II
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
75%
From NCERT
NEET - 2024
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
69%
From NCERT
NEET - 2024
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Consider the following compounds/species:
The number of compounds/species which obey Huckel's rule is:
| i. |  |
ii. |  |
| iii. |  |
iv. |  |
| v |  |
vi |  |
| vii |  |
| 1. | 5 | 2. | 4 |
| 3. | 6 | 4. | 2 |
Subtopic: Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
72%
From NCERT
NEET - 2023
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Which amongst the following compounds will show geometrical isomerism?
1. Pent-1-ene
2. 2,3-Dimethylbut-2-ene
3. 2-Methylprop-1-ene
4. 3,4-Dimethylhex-3-ene
1. Pent-1-ene
2. 2,3-Dimethylbut-2-ene
3. 2-Methylprop-1-ene
4. 3,4-Dimethylhex-3-ene
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
60%
From NCERT
NEET - 2023
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
75%
From NCERT
NEET - 2022
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Compound X on reaction with \(O_3\) followed by \(\mathrm{Zn/ H_2O}\) gives formaldehyde and 2-methyl propanal as products. The compound X is :
1. Pent-2-ene
2. 3-Methylbut-1-ene
3. 2-Methylbut-1-ene
4. 2-Methylbut-2-ene
1. Pent-2-ene
2. 3-Methylbut-1-ene
3. 2-Methylbut-1-ene
4. 2-Methylbut-2-ene
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
73%
From NCERT
NEET - 2022
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Match the bond line structures of hydrocarbons given in List I with the corresponding boiling points given in List II.
| List-I (Compound) | List II (Boiling point in K) | ||
| (a) |  |
(i) | 300.9 |
| (b) |  |
(ii) | 282.5 |
| (c) |  |
(iii) | 309.1 |
| (d) |  |
(iv) | 341.9 |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (i) | (iv) | (iii) | (ii) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (iv) | (i) | (ii) | (iii) |
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
83%
From NCERT
NEET - 2022
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