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Hydrocarbons

ICSE · Class 11 · Chemistry

Flashcards for Hydrocarbons — ICSE Class 11 Chemistry. Quick Q&A cards covering key concepts, definitions, and formulas.

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An infographic illustrating the main types of hydrocarbons: saturated (alkanes), unsaturated (alkenes, alkynes), and aromatic hydrocarbons, with their general structures and key characteristics.
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45 Flashcards
Card 1Introduction

What are hydrocarbons?

Answer

Hydrocarbons are organic compounds made only of carbon and hydrogen atoms. They contain C-C and C-H covalent bonds and do not have functional groups.

Card 2Classification

How are hydrocarbons classified?

Answer

Hydrocarbons are classified as acyclic and cyclic. Acyclic hydrocarbons are open-chain compounds and may be saturated or unsaturated. Cyclic hydrocarbons contain rings and include cycloalkanes and are…

Card 3Alkanes

What are alkanes?

Answer

Alkanes are saturated acyclic hydrocarbons. They contain only C-C and C-H single bonds. General formula: CnH2n+2.

Card 4Cycloalkanes

What are cycloalkanes?

Answer

Cycloalkanes are cyclic saturated hydrocarbons with closed rings of singly bonded carbon atoms. For monocyclic cycloalkanes, the general formula is CnH2n.

Card 5Alkenes

What are alkenes?

Answer

Alkenes are unsaturated hydrocarbons containing one or more double bonds. For one double bond, the general formula is CnH2n.

Card 6Alkynes

What are alkynes?

Answer

Alkynes are unsaturated hydrocarbons containing one or more triple bonds. For one triple bond, the general formula is CnH2n-2.

Card 7Arenes

What are arenes?

Answer

Arenes are aromatic hydrocarbons containing one or more benzene rings. They are unsaturated but chemically stable because of delocalised pi electrons.

Card 8Isomerism in Alkanes

Why do alkanes show only chain isomerism?

Answer

Alkanes do not contain functional groups or multiple bonds. Therefore, they can vary only in the arrangement of the carbon chain, so they show only chain isomerism.

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What are the important topics in Hydrocarbons for ICSE Class 11 Chemistry?
Key topics in Hydrocarbons include Complete Classification and Overview of Hydrocarbons, Classification and Structure of Hydrocarbons, Classification of Hydrocarbons. These are the concepts ICSE Class 11 examiners draw on most — study them first, then practise related questions.
How to score full marks in Hydrocarbons — ICSE Class 11 Chemistry?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Hydrocarbons?
There are 45 flashcards for Hydrocarbons covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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