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Q. No.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
Hints
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
Hints
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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Subtopic: Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
75%
Level 2: 60%+
NEET - 2022
Hints
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
Hints
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
Hints
The correct IUPAC name for this non-polar alkane is:
1. 3-Ethyl-4-methylheptane
2. 3-Ethyl-4, 7-dimethynonane
3. 3-Methyl-7-ethydecane
4. 3,4-Diethyl-5, 7-dimethylnonane
1. 3-Ethyl-4-methylheptane
2. 3-Ethyl-4, 7-dimethynonane
3. 3-Methyl-7-ethydecane
4. 3,4-Diethyl-5, 7-dimethylnonane
Subtopic: Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
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%
Please attempt this question first.
Hints
Please attempt this question first.
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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