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What is the minimum number of carbon atoms of an alkane must have to form an isomer?

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Important Questions on Hydrocarbons

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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The number of structural isomers for C6H14 is:
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Arrange the following conformational isomers of n-butane in order of their increasing potential energy:
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
IUPAC name of lowest molecular mass alkane containing chiral carbon is
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Write the structure of the isomer that will have the lowest boiling point of all the isomers of C4H9Cl.
 
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The conformations of n -butane, commonly known as eclipsed, gauche and anti-conformations can be interconverted by
HARD
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Draw the structural formula for the following:

  • 2, 2 dimethyl pentane
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The energy difference between the staggered and eclipsed conformations of ethane is
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Bromination of cyclohexene under conditions given below yields:

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EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The dihedral angle in staggered form of Newmann's projection of 1,1,1-Trichloro ethane is ………degree. (Round off the answer to the nearest integer)
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
What will be the CORRECT stability order of the different conformations of n -butane ?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which of the following is not an example of heterogeneous catalysis reaction?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Which of these factors does not govern the stability of a conformation in acyclic compounds?
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Which hydrogen in compound E is easily replaceable during bromination reaction in presence of light ?

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HARD
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Draw the structural formula for the following:

  • Iso propane
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The major product of the following reaction is:

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HARD
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes

Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure.

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The correct order of their boiling point is

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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The gas evolved on heating CH3MgBr in methanol is:
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Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
Dihedral angle of least stable conformer of ethane is:
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
In the following skew conformation of ethane, H'-C-C-H″ dihedral angle is:
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MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Alkanes
The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is: