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Haloalkanes and Haloarenes

ICSE · Class 12 · Chemistry

Most important questions from Haloalkanes and Haloarenes for ICSE Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.

104 questions38 flashcards5 concepts

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A labeled diagram of a Daniell cell, showing the anode (zinc electrode), cathode (copper electrode), electrolyte solutions (zinc sulfate, copper sulfate), salt bridge, and the direction of electron an
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104 Questions·
multiple choice

Sample Questions

1multiple choice

Which of the following is the correct IUPAC name for (CH3)2CHCH2Cl?

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1-chloro-2-methylpropane

Parent chain: propane (3C). Cl on C1, methyl group on C2. IUPAC: 1-chloro-2-methylpropane. List substituents alphabetically: chloro before methyl. Common name: iso-butyl chloride (not IUPAC).

2multiple choice

Which reagent is preferred for preparing alkyl chlorides from alcohols and WHY?

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SOCl2 — byproducts are gases that escape

R-OH + SOCl2 → R-Cl + SO2↑ + HCl↑. Both byproducts (SO2 and HCl) are gases and escape from reaction mixture, leaving pure R-Cl. With PCl5, POCl3 remains as liquid byproduct requiring separation.

3multiple choice

The Finkelstein reaction involves:

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Conversion of RCl/RBr to RI using NaI in acetone

Finkelstein reaction: R-Cl + NaI → R-I + NaCl (in dry acetone). NaCl precipitates in acetone (insoluble) → equilibrium shifts to products. Used to prepare iodoalkanes which are hard to make directly.

4multiple choice

The boiling points of haloalkanes with the same alkyl group follow the order:

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RF < RCl < RBr < RI

BP increases with atomic mass of halogen (RF < RCl < RBr < RI) because larger halogens have stronger van der Waals forces. Example: CH3F (194.6K) < CH3Cl (248.8K) < CH3Br (276.6K) < CH3I (315.4K).

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Frequently Asked Questions

What are the important topics in Haloalkanes and Haloarenes for ICSE Class 12 Chemistry?
Key topics in Haloalkanes and Haloarenes include Haloalkanes and Haloarenes - Comprehensive Overview, Mind map showing the classification of halogen derivatives into aliphatic and aromatic compounds with further subcategories., Flowchart showing the step-by-step process for naming haloalkanes using IUPAC nomenclature rules.. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Haloalkanes and Haloarenes — ICSE Class 12 Chemistry?
Understand the core concepts first, then work through the 104 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 Haloalkanes and Haloarenes?
There are 104 practice questions available for Haloalkanes and Haloarenes. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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