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Q. No.Determine the IUPAC name of the compound with the molecular formula C₆H₁₄ that contains two tertiary carbon atoms.
1. 2-Methyl pentane
2. 2, 3-Dimethylbutane
3. 2, 2-Dimethylbutane
4. n-Hexane
1. 2-Methyl pentane
2. 2, 3-Dimethylbutane
3. 2, 2-Dimethylbutane
4. n-Hexane
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
71%
Level 2: 60%+
NEET - 2024
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Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
Level 3: 35%-60%
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 |
82%
Level 1: 80%+
NEET - 2024
Hints
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 |
74%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
69%
Level 2: 60%+
NEET - 2024
Hints
Given below are two statements :
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 |
76%
Level 2: 60%+
NEET - 2024
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Anthracene is an aromatic compound that is described by the following characteristics:
| I. | Cyclic |
| II. | Planar |
| III. | Satisfies Huckel's rule |
| IV. | Has an even number of \(\pi\) electrons |
| 1. | I and II only | 2. | II, III, and IV only |
| 3. | I, III, and IV only | 4. | I, II, III, and IV |
Subtopic: Aromatic Hydrocarbons - Reactions & Mechanism |
79%
Level 2: 60%+
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Among the following, the compound which contains the fewest tertiary carbons is:
| 1. | \((CH_3)_3C(CH_2)_2CH_3~~~~~~~~~~~~~\) |
| 2. | 4-isobutyl heptane |
| 3. |  |
| 4. |  |
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
Level 3: 35%-60%
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When dealing with hybridization in organic compounds, which bond angle is associated with the strongest bond formation?
| 1. | 109° | 2. | 120° |
| 3. | 180° | 4. | 360° |
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
69%
Level 2: 60%+
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The electron pair in the \(\pi -\) bond of an alkene has:
| 1. | 33% p character and are at a lower energy level than the electron pair in the \(\sigma -\) bond. |
| 2. | 50% p character and are at a higher energy level than the electron pair in the \(\sigma -\) bond. |
| 3. | 100% p character and are at a lower energy level than the electron pair in the \(\sigma -\) bond. |
| 4. | 100% p character and are at a higher energy level than the electron pair in the \(\sigma -\) bond. |
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
Level 4: Below 35%
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