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Q. No.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 |
73%
Level 2: 60%+
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%
Level 2: 60%+
NEET - 2023
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
75%
Level 2: 60%+
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 |
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
73%
Level 2: 60%+
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%
Level 1: 80%+
NEET - 2022
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The compound obtained by addition of water to an alkyne having more than two carbons, in the presence of \(\mathrm{HgSO_4 }\) and dilute \(\mathrm{H_2SO_4}\) at 333K, is:
1. A vicinal diol
2. An aldehyde
3. An alcohol
4. A ketone
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
62%
Level 2: 60%+
NEET - 2022
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What is the correct order of boiling points for the following compounds, arranged from the highest to the lowest?
(a) Heptane
(b) Butane
(c) 2-Methylbutane
(d) 2-Methylpropane
(e) Hexane
Choose the correct option from the following:
1. (a) > (c) > (e) > (d) > (b)
2. (c) > (d) > (a) > (e) > (b)
3. (a) > (e) > (b) > (c) > (d)
4. (a) > (e) > (c) > (b) > (d)
(a) Heptane
(b) Butane
(c) 2-Methylbutane
(d) 2-Methylpropane
(e) Hexane
Choose the correct option from the following:
1. (a) > (c) > (e) > (d) > (b)
2. (c) > (d) > (a) > (e) > (b)
3. (a) > (e) > (b) > (c) > (d)
4. (a) > (e) > (c) > (b) > (d)
Subtopic: Aliphatic Hydrocarbon- Physical Properties |
54%
Level 3: 35%-60%
NEET - 2022
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Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
69%
Level 2: 60%+
NEET - 2021
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Subtopic: Aliphatic Hydrocarbon - Methods of Preparation |
71%
Level 2: 60%+
NEET - 2021
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Which of the following statement(s) is/are correct about the elimination reaction of 2-Bromopentane to form pent-2-ene:
(a) -Elimination reaction
(b) Follows Zaitsev rule
(c) Dehydrohalogenation reaction
(d) Dehydration reaction
| 1. | (a), (c), (d) | 2. | (b), (c), (d) |
| 3. | (a), (b), (d) | 4. | (a), (b), (c) |
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism | Aliphatic Hydrocarbon - Methods of Preparation |
77%
Level 2: 60%+
NEET - 2020
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