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Important Questions

Organic Chemistry II

ICSE · Class 10 · Chemistry

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

42 questions25 flashcards5 concepts

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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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42 Questions·
multiple correctmultiple choice

Sample Questions

1multiple correct

Which of the following are methods to prepare methane in laboratory?

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Decarboxylation of sodium acetate with soda lime, Reduction of methyl iodide

Methane is prepared by decarboxylation of sodium acetate (CH3COONa + NaOH → CH4 + Na2CO3) and by reduction of methyl iodide. Calcium carbide produces acetylene, not methane.

2multiple choice

Which test is used to detect unsaturation in organic compounds?

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Baeyer's test

Baeyer's test uses cold alkaline KMnO4 solution. Unsaturated compounds decolorize the purple color of KMnO4, indicating presence of C=C or C≡C bonds.

3multiple choice

Denatured alcohol contains:

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Ethyl alcohol + methyl alcohol + pyridine

Denatured alcohol is ethyl alcohol made unfit for drinking by adding poisonous substances like methyl alcohol, pyridine, and coloring matter.

4multiple correct

Which of the following reactions occur with ethylene?

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Addition of hydrogen, Addition of halogens, Polymerization

Ethylene undergoes addition reactions due to C=C double bond: adds H2 to form ethane, adds Cl2/Br2 to form dihalides, and polymerizes to form polythene. Substitution occurs in saturated compounds.

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Frequently Asked Questions

What are the important topics in Organic Chemistry II for ICSE Class 10 Chemistry?
Organic Chemistry II 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 II — ICSE Class 10 Chemistry?
Understand the core concepts first, then work through the 42 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 II?
There are 42 practice questions available for Organic Chemistry II. 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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