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प्रश्न
What are hydrocarbons? Explain with examples.
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उत्तर
Hydrocarbon is a compound of hydrogen and carbon. Examples for hydrocarbons are methane (CH4), ethane (C2H6) and ethyne (C2H2). All these compounds are hydrocarbons as they are only made of hydrogen and carbon elements which is evident from their respective molecular formulae.
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संबंधित प्रश्न
List two reasons for carbon forming a large number of compounds. Name the type of bonding found in most of its compounds. Why does carbon form compounds mainly by this kind of bonding?
Write the number of covalent bonds in the molecule of propane, C3H8.
Draw the structures for butanone.
Draw the structures of possible isomers of butane, C4H10.
Write the molecular formula of benzene.
Giving the structure, state the number of single bonds, double bonds, and triple bonds (if any) in the following compound:
Benzene
Write the molecular formula and structure of cyclohexane. How many covalent bonds are there in a molecule of cyclohexane?
How many isomers of the following hydrocarbon are possible?
C4H10
An alkyne has seventy five carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be ______.
The hydrocarbon which has alternate single and double bonds arranged in the form of a ring is ______.
The solid element A exhibits the property of catenation. It is also present in the form of a gas B in the air which is utilised by plants in photosynthesis. An allotrope C of this element is used in glass cutters.
(a) What is element A?
(b) What is the gas B?
(c) Name the allotrope C.
(d) State another use of allotrope C (other than in glass cutters).
(e) Name another allotrope of element A which exists as spherical molecules.
(f) Name a yet another allotrope of element A which conduct electricity.
You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12
Which three formulae can represent cyclic hydrocarbons?
Pentane has the molecular formula C5H12. It has ______.
How many electrons are there in the outermost orbit of carbon?
Hydrocarbons are mainly composed of which of these?
Recognise the carbon chain type of the following:
\[\begin{array}{cc}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\phantom{....}|\\\ce{H - C - C - C - H}\\
|\phantom{....}|\phantom{....}|\\\ce{H}\phantom{...}\ce{}\phantom{.....}\ce{H}\\
\ce{H - C - H}\\
|\\
\ce{H}
\end{array}\]
Write the chemical equation for the following:
Hydrogenation of ethene.
Draw the structure of propanone.
