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Important Questions

Practical Chemistry

ICSE · Class 10 · Chemistry

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

45 questions25 flashcards5 concepts

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A diagram illustrating the laboratory test for hydrogen gas, showing a burning splint producing a 'pop' sound when brought near the gas.
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45 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which gases are evolved when copper nitrate is heated? (Select all correct answers)

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Nitrogen dioxide, Oxygen

When copper nitrate is heated, it decomposes to form copper oxide (black residue), nitrogen dioxide (brown gas), and oxygen gas according to: 2Cu(NO₃)₂ → 2CuO + 4NO₂ + O₂

2multiple choice

Which test is used to confirm the presence of hydrogen gas?

Show answer

Burns with a pop sound

Hydrogen gas burns with a characteristic 'pop' sound when ignited. This is the confirmatory test for hydrogen gas: 2H₂ + O₂ → 2H₂O

3multiple correct

Which ions can be identified by their reaction with sodium hydroxide solution? (Select all correct answers)

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Cu²⁺, Fe³⁺, Zn²⁺, NH₄⁺

All the cations listed (Cu²⁺, Fe³⁺, Zn²⁺, NH₄⁺) can be identified by their characteristic reactions with NaOH solution, forming colored precipitates or releasing gases. Chloride ion cannot be tested this way.

4multiple choice

What color is the precipitate formed when copper ions react with sodium hydroxide?

Show answer

Pale blue

Cu²⁺ ions react with NaOH to form a pale blue precipitate of copper hydroxide Cu(OH)₂. This precipitate turns black on heating due to formation of CuO.

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Frequently Asked Questions

What are the important topics in Practical Chemistry for ICSE Class 10 Chemistry?
Practical Chemistry 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 Practical Chemistry — 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 Practical Chemistry?
There are 45 practice questions available for Practical Chemistry. 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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