Practical Work
ICSE · Class 9 · Chemistry
Flashcards for Practical Work — ICSE Class 9 Chemistry. Quick Q&A cards covering key concepts, definitions, and formulas.
Interactive on Super Tutor
Studying Practical Work? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for flashcards and more.
1,000+ Class 9 students started this chapter today
Super Tutor has 20+ illustrations like this for Practical Work alone — flashcards, concept maps, and step-by-step visuals.
See them allWhat gas burns with a 'pop' sound when a burning splinter is brought near it?
Answer
Hydrogen (H₂). This is a characteristic test for hydrogen gas. When hydrogen mixes with air and a burning taper is brought near it, it burns with a distinctive 'pop' sound due to the explosive combust…
Which gas turns lime water milky and has no effect on acidified potassium dichromate?
Answer
Carbon dioxide (CO₂). The lime water test: Ca(OH)₂ + CO₂ → CaCO₃↓ + H₂O. The white precipitate of CaCO₃ makes lime water milky. Unlike SO₂, CO₂ does not affect acidified K₂Cr₂O₇ paper.
What happens when copper carbonate (CuCO₃) is heated?
Answer
Copper carbonate decomposes on heating: CuCO₃ → CuO + CO₂↑. The green copper carbonate changes to black copper oxide, and carbon dioxide gas is evolved which can be tested with lime water.
Which gas has the smell of rotten eggs and turns lead acetate paper black?
Answer
Hydrogen sulphide (H₂S). It has a characteristic foul smell like rotten eggs and turns lead acetate paper black due to formation of black lead sulphide: (CH₃COO)₂Pb + H₂S → PbS↓ + 2CH₃COOH…
What color flame does a sodium salt produce in a flame test?
Answer
Golden yellow flame. Sodium compounds produce a persistent golden yellow flame. When viewed through blue glass, the yellow color vanishes, helping to distinguish it from other metals.
What gas rekindles a glowing wooden splinter?
Answer
Oxygen (O₂). This is the characteristic test for oxygen gas. Oxygen supports combustion, so it rekindles (reignites) a glowing wooden splinter that has been blown out but is still hot.
What happens when zinc carbonate is heated strongly?
Answer
ZnCO₃ → ZnO + CO₂↑. White zinc carbonate decomposes to form zinc oxide (which is yellow when hot, white when cold) and carbon dioxide gas is evolved.
Which gas turns moist starch iodide paper blue-black?
Answer
Chlorine (Cl₂). The reaction is: Cl₂ + 2KI → 2KCl + I₂. The liberated iodine reacts with starch to produce the characteristic blue-black color.
+17 more flashcards available
Practice AllFrequently Asked Questions
What are the important topics in Practical Work for ICSE Class 9 Chemistry?
How to score full marks in Practical Work — ICSE Class 9 Chemistry?
How many flashcards are available for Practical Work?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Practical Work
Important Questions
Practice with board exam-style questions
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually
For serious students
Get the full Practical Work chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 9 Chemistry.