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![Selina solutions for Concise Chemistry [English] Class 9 ICSE chapter 9 - Practical Work - Shaalaa.com](/images/concise-chemistry-english-class-9-icse_6:3baa192b34e3498fa97ae56602d705f0.jpg "Selina solutions for Concise Chemistry [English] Class 9 ICSE chapter 9 - Practical Work")
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Solutions for Chapter 9: Practical Work
Below listed, you can find solutions for Chapter 9 of CISCE Selina for Concise Chemistry [English] Class 9 ICSE.
Selina solutions for Concise Chemistry [English] Class 9 ICSE 9 Practical Work Exercise 9 (A) [Page 142]
(a) Give only one suitable chemical test to identify the following gases.
- Ammonia
- Sulphur dioxide
- Hydrogen Chloride
- Chlorine
- Carbon Dioxide
- Oxygen
- Hydrogen
(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?
(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?
(d) State the gas responsible for bleaching action.
(e)Which gas turn blue cobalt chloride paper light pink?
What is observed in performing the following :
| Hydrogen | Oxygen | Carbon dioxide | Chlorine | |
| Litmus test | ||||
| Apply a burning splint to the gas | ||||
| Colour of gas | colourless | colourless | colourless | greenish-yellow |
| Odour of gas |
Give a chemical test to distinguish between the following gases.
H2 and CO2
Give a chemical test to distinguish between the following gases.
H2 and O2
Give a chemical test to distinguish between the following gases.
CO2 and SO2
Give a chemical test to distinguish between the following gases.
HCl and H2S
Give a chemical test to distinguish between the following gases.
HCl and Cl2
Give a chemical test to distinguish between the following gases.
NH3 and HCl
Give a chemical test to distinguish between the following gases.
SO2 and Cl2
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Name the gas that.
Turns moist starch iodide paper blue black.
Name the gases which Turn moist red litmus blue.
Name the gas that:
Does not affect acidified K2Cr2O7 paper but turns lime water milky.
Name Affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
What do you observe when CO2 is passed through lime water first and then a little in excess.
What do you observe when HCI is passed through a silver nitrate solution.
What do you observe when H2S is passed through a lead nitrate solution.
What do you observe when Cl2 is passed through potassium iodide (KI) solution.
What do you observe when Cobalt chloride paper is introduced in water vapour.
Name: Two carbonates do not produce carbon dioxide on heating.
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Name: A brown gas
Name: A greenish-yellow gas.
Name: Gas with rotten egg smell.
Selina solutions for Concise Chemistry [English] Class 9 ICSE 9 Practical Work Exercise 9 (B) [Page 146]
Distinguish by heating the following in dry test tubs.
Zinc carbonate, Copper carbonate and lead carbonate.
Distinguish by heating the following in dry test tubs.
Zinc nitrate and copper nitrate.
Distinguish by heating the following in dry test tubs.
Copper Sulphate and copper carbonate
Distinguish by heating the following in dry test tubs.
Ammonium Chloride and iodine.
Match the following:
| Column A | Column B |
| (a) Pb(NO3)2 | (i) rotten eggs smell |
| (b) CO2 | (ii) burns with a pop sound |
| (c) (NH4)2Cr2O7 | (iii) the suffocating smell of sulphur |
| (d) HCI | (iv) lime water turns milky |
| (e) NO2 | (v) crackling sound |
| (f) O2 | (vi) residue swells up |
| (g) H2 | (vii) brown gas |
| (i) H2S | (viii) supports combustion |
| (j) SO2 | (ix) fumes with NH3 solution |
Distinguish by dilute sulphuric acid.
Sodium Sulphite and sodium carbonate?
Distinguish by dilute sulphuric acid.
Copper and magnesium?
Distinguish by dilute sulphuric acid.
Sodium sulphide and sodium sulphite?
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium dichromate.
Write your observation and a balanced equation in the case of the following substances being heated.
Copper nitrate.
Write your observation and a balanced equation in the case of the following substances being heated.
Copper carbonate.
Write your observation and a balanced equation in the case of the following substances being heated.
Zinc carbonate.
Write your observation and a balanced equation in the case of the following substances being heated.
Ammonium chloride
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
State the original colour of the following substance and colour of residue obtained after heating.
Lead nitrate
State the original colour of the following substance and colour of residue obtained after heating.
Zinc carbonate
Selina solutions for Concise Chemistry [English] Class 9 ICSE 9 Practical Work Exercise 9 (C) [Pages 153 - 142]
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
What do you observe when dilute sulphuric acid is added to the following:
Sodium carbonate
What do you observe when dilute sulphuric acid is added to Zinc granules.
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
How is a flame test performed?
How will you distinguish sodium chloride, potassium chloride, and calcium chloride?
How will you distinguish between soft water and hard water?
How will you distinguish between temporary hard water and permanent hard water?
What do you understand by Temporary hardness?
What do you understand by soft water?
What do you understand by permanent hardness?
How the temporary and permanent hardness is removed?
What are soaps and detergents?
Why do they differ in their actions?
Explain their cleansing action?
Compare the effect of soaps and detergents on hard water.
Copy and complete the following table which refers to the action of heat on the carbonate:
| Carbonate | Colour of residue on cooling |
| Zinc Carbonate |
Copy and complete the following table which refers to the action of heat on the carbonate:
| Carbonate | Colour of residue on cooling |
| Lead carbonate |
Copy and complete the following table which refers to the action of heat on the carbonate:
| Carbonate | Colour of residue on cooling |
| Copper carbonate |
Identify the following substance:
An alkaline gas A which gives dense white fumes with hydrogen chloride.
Identify the following substance:
Gas B that has an offensive smell as of rotten eggs.
Identify the following substance:
Gas C that is colourless and can be used as a bleaching agent.
Identify the following substance:
A brown gas D with the irritating smell.
Complete the following table and write your observations.
| Hydrogen sulphide | Ammonia | Sulphur dioxide | Hydrogen chloride | |
| Shake the gas with red litmus solution |
Complete the following table and write your observations.
| Hydrogen sulphide | Ammonia | Sulphur dioxide | Hydrogen chloride | |
| Shake the gas with blue litmus solution |
Complete the following table and write your observations.
| Hydrogen sulphide | Ammonia | Sulphur dioxide | Hydrogen chloride | |
| Apply a burning splint to the gas |
Solutions for 9: Practical Work
Selina solutions for Concise Chemistry [English] Class 9 ICSE chapter 9 - Practical Work
Shaalaa.com has the CISCE Mathematics Concise Chemistry [English] Class 9 ICSE CISCE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Selina solutions for Mathematics Concise Chemistry [English] Class 9 ICSE CISCE 9 (Practical Work) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Selina textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Concise Chemistry [English] Class 9 ICSE chapter 9 Practical Work are Matter (Substance), Molecules, Pure Substances, Elements, Symbols Used to Represent Atoms of Different Elements, Valency, Variable Valency, Chemical Formula or Molecular Formula, Naming Chemical Compounds, To Calculate the Valency from the Formula, Chemical Equation, Balancing Chemical Equation, Atomic Mass, Molecular Mass, Percentage Composition, Empirical and Molecular Formula, Empirical Formula of a Compound, Hydrogen, Ions (Radicals) and Its Types, Chemical Formula or Molecular Formula, Classification of Molecules, Chemical Reaction, Conditions Necessary for Chemical Reactions, Types of Chemical Change or Chemical Reaction, Direct Combination (or Synthesis) Reaction, Decomposition Reactions, Single Displacement Reactions, Double Displacement Reaction, Energy Change in Chemical Reactions, Chemical Reaction, Water: Our Lifeline, Water - a Universal Solvent, Salts, Removal of Hardness of Water, Efflorescence, Hygroscopic, and Deliquescence Substances, Drying and Dehydrous Substances, Classification of water: Soft and Hard Water, Causes of Hardness, Advantage and Disadvantage of Hard Water, Physical Properties of Water, Chemical Properties of Water, Solutions as 'Mixtures' of Solids in Water, Components of Solutions, Different Types of Solutions, Saturated Solutions, Concentration of a Solution, Solubility, Crystals and Crystallisation, Hydrated and Anhydrous Substances, Prevention of Water Pollution, Chemical Bond, History of Atom, Elements, Atoms: Building Blocks of Matter, Discovery of Charged Particles in Matter, Electrons (e), Protons (p), Nucleus, Neutrons (n), J. J. Thomson’s Atomic Model, Lord Rutherford’s Atomic model, Neils Bohr’s Model of an Atom, Structure of an Atom, Atomic Number (Z), Mass Number (A), and Number of Neutrons (n), Atomic Mass, Electronic Configuration of Atom, Reason for Chemical Activity of an Atom, Isotopes, Isobars, Types of Covalent Bond, Formation of Covalent Bond, The Covalent Bond, Ionic or Electrovalent Bond, Ionic or Electrovalent Bond, Valency, Dalton’s Atomic Theory, Types of Element: Metals, History of Periodic Table: Early Attempts at the Classification of Elements, Dobereiner’s Triads, Newland's Law of Octaves, Mendeleev’s Periodic Table, Merits and Demerits of Mendeleev’s Periodic Table, Modern Periodic Law, The Modern Periodic Table, Structure of the Modern Periodic Table, Advantage and Disadvantage of Modern Periodic Table, Periodic Properties, Shells (Orbits), Valency, Properties of Elements, Atomic Radius Or Atomic Size, Metallic and Non-metallic Characters, Study of Specific Groups in Periodic Table, Group II (Alkaline Earth Metals), Group I (Alkali Metals), Group VIIA Or Group 17 (The Halogens), Group Zero or 18 Group (Noble Gases), Uses of Periodic Table, Position of Hydrogen in Periodic Table, Similarities Between Hydrogen and Alkali Metals, Application of Activity Series in the Preparation of Hydrogen, Laboratory Preparation of Hydrogen, Similarities Between Hydrogen and Halogens, Hydrogen, Preparation of Hydrogen, Manufacture of Hydrogen, Chemical Properties of Hydrogen, Oxidation, Reduction and Redox Reactions, Uses of Hydrogen, Physical Properties of Hydrogen, Molecular Motion : Relationship of Temperature, Pressure and Volume, The Temperature and a Thermometer, The Gas Laws, Scales of Thermometers, Gas Equation, Standard Temperature Pressure (S.T.P.), The Effect of Moisture and Pressure, Gases and Its Characteristics, Pressure and Volume Relationship or Bolye's Law, Temperature - Volume Relationship or Charles's Law, Absolute Zero, Causes of Acid Rain, Global Warming, Ozone Layer Depletion, Air Pollution and Its Causes, Atmospheric Pollution, Effects of Air Pollution, Prevention of Air Pollution, Gaseous Pollutants and Their Effects, Acid Rain, Green House Effect, Advantage of Green House Effect, Preventive Measures of Global Warming, Ozone.
Using Selina Concise Chemistry [English] Class 9 ICSE solutions Practical Work exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Selina Solutions are essential questions that can be asked in the final exam. Maximum CISCE Concise Chemistry [English] Class 9 ICSE students prefer Selina Textbook Solutions to score more in exams.
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