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Important Questions

Organic Chemistry I

ICSE · Class 10 · Chemistry

Most important questions from Organic Chemistry I for ICSE Class 10 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.

45 questions24 flashcards5 concepts

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A diagram illustrating the sp3, sp2, and sp hybridization states of carbon, showing the arrangement of atoms and bond angles for tetrahedral, trigonal planar, and linear geometries respectively. Inclu
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45 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are characteristics of organic compounds? (Select all correct answers)

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Covalent bonding, Low melting and boiling points, Usually combustible

Organic compounds typically have covalent bonding, low melting and boiling points, and are combustible. They do not have ionic bonding or high melting points like inorganic compounds.

2multiple choice

Which functional group is present in alcohols?

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-OH

The hydroxyl group (-OH) is the characteristic functional group present in alcohols.

3multiple choice

Butane and 2-methylpropane have the same molecular formula but different structures. What type of isomerism do they show?

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Chain isomerism

Chain isomerism occurs when compounds have the same molecular formula but different arrangements of carbon atoms in the main chain. Butane has a straight chain while 2-methylpropane has a branched chain.

4multiple correct

Which of the following are unsaturated hydrocarbons? (Select all correct answers)

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Alkenes, Alkynes, Ethene, Propyne

Unsaturated hydrocarbons contain double or triple bonds. Alkenes have double bonds, alkynes have triple bonds. Ethene and propyne are specific examples of alkene and alkyne respectively.

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Frequently Asked Questions

What are the important topics in Organic Chemistry I for ICSE Class 10 Chemistry?
Organic Chemistry I covers several key topics that are frequently asked in ICSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Organic Chemistry I — ICSE Class 10 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 important questions are there in Organic Chemistry I?
There are 45 practice questions available for Organic Chemistry I. These cover multiple question types including MCQs, short answer, and long answer questions.

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

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