Given below are two statements : 
Statement I : The boiling point of three isomeric pentanes follows the order
\(\text { n-pentane }>\text { isopentane }>\text { neopentane }\)
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.

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.
Subtopic:  Aliphatic Hydrocarbon- Physical Properties |
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NEET - 2024
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For the given reaction: 


'P' is:
 
1. 2.
3.
4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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Match List -I with List -II:
List-I
(Reactions)
List-II
(Products)
A. 
I.  \(\left(\mathrm{CH}_3\right)_2 \mathrm{C}=\mathrm{O}+\mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}\)
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 |
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NEET - 2024
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The major product P formed in the following reaction sequence is :


 
1.
2.
3.
4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
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NEET - 2024
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Consider the following compounds/species:
i. ii.
iii. iv.
v vi
vii
The number of compounds/species which obey Huckel's rule is:
1. 5 2. 4
3. 6 4. 2
Subtopic:  Aromatic Hydrocarbons - Nomenclature, Isomerism & Huckel's Rule |
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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    
Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
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NEET - 2023
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Which of the following compounds does not exhibit aromaticity?
 
1. 2.
3. 4.
Subtopic:  Aromatic Hydrocarbons - Benzene - Structure, Preparation & Chemical Reactions |
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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 |
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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 |
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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 |
 59%
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