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HYDROCARBON
Page 2


HYDROCARBON
What Are Hydrocarbon?
HYDROCARBONS are the compounds containing
carbon and hydrogen only.
Page 3


HYDROCARBON
What Are Hydrocarbon?
HYDROCARBONS are the compounds containing
carbon and hydrogen only.
1.1 Classification Of
Hydrocarbon
Depending upon the types of carbon-carbon bonds present, they
can be classified into tree main categories:
Saturated Hydrocarbon 1.
Unsaturated Hydrocarbon 2.
Aromatic Hydrocarbon  3.
Page 4


HYDROCARBON
What Are Hydrocarbon?
HYDROCARBONS are the compounds containing
carbon and hydrogen only.
1.1 Classification Of
Hydrocarbon
Depending upon the types of carbon-carbon bonds present, they
can be classified into tree main categories:
Saturated Hydrocarbon 1.
Unsaturated Hydrocarbon 2.
Aromatic Hydrocarbon  3.
1.1.1Saturated Hydrocarbon
The hydrocarbon that contain only carbon-carbon single bond is called
Saturated Hydrocarbon. These include open chain hydrocarbon as well as closed
chain hydrocarbons. These compounds are called saturated because they have  
maximum number of bonded hydrogen
              If  different carbon atoms are joined together to form an open chain of
carbon atoms with single bonds, they are called Alkanes.
For example: 2-Methylpropane (Isobutane)
If carbon atoms form a closed chain or ring, they are called Cycloalkanes.
For  example: Cyclopentane
Page 5


HYDROCARBON
What Are Hydrocarbon?
HYDROCARBONS are the compounds containing
carbon and hydrogen only.
1.1 Classification Of
Hydrocarbon
Depending upon the types of carbon-carbon bonds present, they
can be classified into tree main categories:
Saturated Hydrocarbon 1.
Unsaturated Hydrocarbon 2.
Aromatic Hydrocarbon  3.
1.1.1Saturated Hydrocarbon
The hydrocarbon that contain only carbon-carbon single bond is called
Saturated Hydrocarbon. These include open chain hydrocarbon as well as closed
chain hydrocarbons. These compounds are called saturated because they have  
maximum number of bonded hydrogen
              If  different carbon atoms are joined together to form an open chain of
carbon atoms with single bonds, they are called Alkanes.
For example: 2-Methylpropane (Isobutane)
If carbon atoms form a closed chain or ring, they are called Cycloalkanes.
For  example: Cyclopentane
1.1.2 Unsaturated Hydrocarbon
The  hydrocarbons which contain carbon-carbon multiple bond  
(Double bonds or triple bond) are called unsturated
hydrocarbon.
                               Depending upon multiple bond they are further classified as
alkenes and alkynes.
Alkenes : These are hydrocarbon which contain at least one carbon-carbon
bond. For example: Ethene
A l k y n e s: These are hydrocarbons which contain at least one carbon-carbon
triple bond. For example: Ethyle
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FAQs on PPT: Hydrocarbons - Chemistry for JEE Main & Advanced

1. What are hydrocarbons and why are they important in organic chemistry?
Ans. Hydrocarbons are organic compounds composed entirely of hydrogen and carbon atoms. They are fundamental to organic chemistry because they form the backbone of many organic molecules. Hydrocarbons are important as they serve as fuels (like gasoline and natural gas), solvents, and raw materials for the production of plastics, synthetic fibers, and other chemicals.
2. What are the different types of hydrocarbons?
Ans. Hydrocarbons can be classified into two main types: aliphatic and aromatic hydrocarbons. Aliphatic hydrocarbons can be further divided into alkanes (single bonds), alkenes (at least one double bond), and alkynes (at least one triple bond). Aromatic hydrocarbons contain one or more aromatic rings and have unique stability due to resonance. Each type has distinct properties and reactivity.
3. How do you differentiate between alkanes, alkenes, and alkynes?
Ans. The primary difference between alkanes, alkenes, and alkynes lies in their bonding. Alkanes are saturated hydrocarbons with single bonds only (C-C), alkenes are unsaturated with at least one double bond (C=C), and alkynes have at least one triple bond (C≡C). This difference in bonding affects their chemical reactivity, with alkenes and alkynes being more reactive than alkanes.
4. What is the significance of isomerism in hydrocarbons?
Ans. Isomerism refers to the existence of compounds with the same molecular formula but different structural arrangements. In hydrocarbons, isomerism is significant because it can lead to different physical and chemical properties. For example, butane (C4H10) can exist as two structural isomers: n-butane and isobutane, which have different boiling points and uses.
5. How can I prepare for JEE with a focus on hydrocarbons?
Ans. To prepare for JEE with a focus on hydrocarbons, students should thoroughly understand the concepts of hydrocarbon structures, nomenclature, reactions, and properties. Practicing previous years' JEE questions, taking mock tests, and referring to standard textbooks like NCERT and organic chemistry by Morrison and Boyd can be very helpful. Additionally, working on problem-solving techniques and understanding reaction mechanisms will enhance preparation.
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