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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 |
66%
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 |
56%
From NCERT
NEET - 2023
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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
70%
From NCERT
NEET - 2022
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Compound X on reaction with \(O_3\) followed by \(Zn/ H_2O\) 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 |
71%
From NCERT
NEET - 2022
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Match list-I with 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 |
| (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 |
79%
From NCERT
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 \(HgSO_4 \) and dilute \(H_2SO_4\) at 333K, is:
| 1. | A vicinal diol | 2. | An aldehyde |
| 3. | An alcohol | 4. | A ketone |
Subtopic: Alkanes, Alkenes and Alkynes - Chemical Properties |
59%
From NCERT
NEET - 2022
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Given the following compounds:
(a) Heptane
(b) Butane
(c) 2-Methylbutane
(d) 2-Methylpropane
(e) Hexane
For the compounds given above, the correct option capturing decreasing order of boiling points is:
(a) Heptane
(b) Butane
(c) 2-Methylbutane
(d) 2-Methylpropane
(e) Hexane
For the compounds given above, the correct option capturing decreasing order of boiling points is:
| 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 |
From NCERT
NEET - 2022
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Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
66%
From NCERT
NEET - 2021
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Subtopic: Aliphatic Hydrocarbon - Methods of Preparation |
67%
From NCERT
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 |
74%
From NCERT
NEET - 2020
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