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How many structural isomers can you draw for pentane? - Science

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प्रश्न

 How many structural isomers can you draw for pentane?

थोडक्यात उत्तर

उत्तर

Three structural isomers are possible for pentane.

1) \[\ce{CH3 - CH2 - CH2 - CH2 - CH3}\]

2)

\begin{array}{cc}\
\ce{CH3 - CH2 - CH - CH3}\\
\phantom{......}|\\
\phantom{........}\ce{CH3}
\end{array}

3) 

\begin{array}{cc}\
\phantom{..}\ce{CH3}\\
|\\
\ce{CH3 - C - CH3}\\
|\\
\phantom{...}\ce{CH3}\\
\end{array}

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पाठ 4: Carbon and its Compounds - Intext Questions [पृष्ठ ६८]

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एनसीईआरटी Science [English] Class 10
पाठ 4 Carbon and its Compounds
Intext Questions | Q 1 | पृष्ठ ६८

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संबंधित प्रश्‍न

Define Catenation.


Write the number of covalent bonds in the molecule of ethane.


Why does carbon form strong bonds with most other elements ?


Draw the electron dot structures for ethanoic acid.


A compound 'X' on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound 'Y'. 'X' also reacts with sodium metal to evolve a colourless gas 'Z'. Identify 'X', 'Y' and 'Z'. Write the equation of the chemical reaction of formation of 'Y' and also write the role of sulphuric acid in the reaction.


Write the name and structure of a saturated compound in which the carbon atoms are arranged in a ring. Give the number of single bonds present in this compound.


Write a short note on Catenation.


Write the electron-dot structures for ethane.


How many isomers of the following hydrocharbons are possible?

C3H8


A cyclic hydrocarbon having carbon-carbon single bonds as well as carbon-carbon double bonds in its molecule is:
(a) C6H12
(b) C6H14
(c) C6H6
(d) C6H10


An unsaturated hydrocarbon having a triple covalent bond has 50 hydrogen atoms in its molecule. The number of carbon atoms in its molecule will be:
(a) 24
(b) 25
(c) 26
(d) 28


What is added to groundnut oil when it is to be converted to vanaspati ghee?


Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?
C6H12, C6H14, C6H10


Structural formula of ethyne is ______.


Structural formula of ethyne is


Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reactions. Give the test to distinguish ethane from ethene.


Identify and name the functional groups present in the following compounds.

  1. \[\begin{array}{cc}
    \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\
    \phantom{}|\phantom{....}|\phantom{....}|\phantom{..}\\
    \ce{H - C - C - C - OH}\\
    \phantom{}|\phantom{....}|\phantom{....}|\phantom{..}\\
    \ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\
    \end{array}\]
  2. \[\begin{array}{cc}
    \phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{....}\\
    \phantom{...}|\phantom{....}|\phantom{....}||\phantom{....}\\
    \ce{H - C - C - C - OH}\\
    \phantom{...}|\phantom{....}|\phantom{.........}\\
    \phantom{}\ce{H}\phantom{...}\ce{H}\phantom{.......}\\
    \end{array}\]
  3. \[\begin{array}{cc}
    \phantom{......}\ce{H}\phantom{....}\ce{H}\phantom{....}\ce{O}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{.......}\\
    \phantom{....}|\phantom{....}|\phantom{....}||\phantom{....}|\phantom{....}|\phantom{....}\\
    \ce{H} - \ce{C} - \ce{C} - \ce{C} - \ce{C} - \ce{C} - \ce{H}\\
    \phantom{....}|\phantom{.....}|\phantom{........}|\phantom{....}|\phantom{....}\\
    \phantom{....}\ce{H}\phantom{....}\ce{H}\phantom{........}\ce{H}\phantom{..}\ce{H}\phantom{.....}\\
    \end{array}\]
  4. \[\begin{array}{cc}
    \phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{......}\\
    \phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}|\phantom{....}\\
    \ce{H - C - C - C = C - H}\\
    \phantom{....}|\phantom{....}|\phantom{.............}\\
    \phantom{....}\ce{H}\phantom{...}\ce{H}\phantom{.............}
    \end{array}\]

Draw the electron dot structure for ethyne.


  1. Write the name and draw the structure of a saturated hydrocarbon with four carbon atoms.
  2. Write the number of single covalent bonds present in this compound.

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