The molecule among the following that has the hybridization sp2sp2sp, and sp from left to right atoms is:

1. HCC-CH

2. CH2=CH-CCH

3. CH2=CH-CH=CH2 

4. CH2-CH=CH-CH3

Subtopic:  Alkanes, Alkenes and Alkynes - Conformations and Hybridisation |
 90%
From NCERT
NEET - 2018
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The correct statement regarding the comparison of staggered and eclipsed conformations of ethane is:

1.  The eclipsed conformation of ethane is more stable than staggered conformation because eclipsed conformation has no torsional strain.
2. The eclipsed conformation of ethane is more stable than staggered conformation even though the eclipsed conformation has a torsional strain.
3. The staggered conformation of ethane is more stable than eclipsed conformation because staggered conformation has no torsional strain.
4. The staggered conformation of ethane is less stable than eclipsed conformation because staggered conformation has a torsional strain.

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 83%
From NCERT
NEET - 2016
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X and Y in the above-mentioned reaction are respectively:
1. X = 2–Butyne; Y = 3–Hexyne
2. X = 2-Butyne; Y = 2-Hexyne
3. X = 1-Butyne; Y = 2-Hexyne
4. X = 1-Butyne; Y = 3–Hexyne

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 60%
From NCERT
NEET - 2016
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HCl with an alkene X reacts in accordance with Markovnikov’s rule to give 1-Chloro-1-methylcyclohexane. The structure of alkene (X) is:

1. 2.
3. (1) and (2) 4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 77%
From NCERT
NEET - 2015
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2,3-dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

1. CH32CH-CH|CH3-CH=CH2

2. CH33C-CH=CH2

3. CH32C=CH-CH2-CH3

4. CH32CH-CH2-CH=CH2

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
From NCERT
NEET - 2015
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The reaction of C6H5CH =CHCH3 with HBr produces:

1. \(C_{6} H_{5} \underset{Br}{\underset{\left|\right.}{CH}} CH_{2} CH_{3} \)

2. \(C_{6} H_{5} CH_{2} \underset{Br}{\underset{\left|\right.}{CH}} CH_{3} \) 

3. \(C_{6} H_{5} CH_{2} CH_{2} CH_{2} Br \)

4. 

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 76%
From NCERT
NEET - 2015
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Above mentioned single molecule is obtained from ozonolysis. The starting cyclic compound is:

1. 2.
3. 4.
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 75%
From NCERT
NEET - 2015
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Given compounds are as follows:
 

(I) (II)
(III)

The enthalpy of hydrogenation of these compounds will be in the order as-

1. I > II > III 2. III > II > I
3. II > III > I 4. II > I > III
Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 63%
NEET - 2015
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The product(s) that are formed when the given compound is treated with Br2 in the presence of FeBr3 are:
 

1. 2. and
3.  and 
 
4. and

Subtopic:  Aromatic Hydrocarbons - Reactions & Mechanism |
 72%
From NCERT
AIPMT - 2014
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Product Z in the above-mentioned reaction is:

1. CH3-(CH2)3-O-CH2CH3

2. (CH3)2CH2-O-CH2CH3

3. CH3(CH2)4-O-CH3

4. CH3CH2-CH(CH3)-O-CH2CH3

Subtopic:  Aliphatic Hydrocarbon -Nomenclature, Isomerism & Mechanism |
 74%
From NCERT
AIPMT - 2014
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