ICSE Worksheet for chapter-11 Practical Chemistry class 9

ICSE Worksheet for chapter-11 Practical Chemistry class 9

Worksheet For class 9

Find ICSE Worksheet for chapter-11 Practical Chemistry class 9

CLASS-9

BOARD: ICSE

Chemistry Worksheet - 11

TOPIC:  Practical Chemistry

For other ICSE Worksheet for class 9 Science check out main page of Physics Wallah.

PRACTICAL CHEMISTRY

SUMMARY -

1. Identification of gases.
   1. Neutral gases - H₂O, H₂, O₂
   2. Acidic gases - CO₂, SO₂, Cl₂, HCl, H₂S, NO₂
   3. Basic gases - NH₃
2. Action of heat –
   CuCO₃, ZnCO₃, Na₂CO₃.10H₂O, CuSO₄.5H₂O, Zn(NO₃)₂, Cu(NO₃)₂, Pb(NO₃)₂, NH₄Cl, I₂, (NH₄)₂Cr₂O₇.
3. Addition of dilute H₂SO₄ on :- metal, sulphide, carbonate.
4. Flame test – Na, K, Ca.
5. Hard and soft water, types of hardness (temporary and permanent), soaps and detergents.

SECTION -1

1. Name the gas which –
   1. Turns moist starch iodine paper blue black.
   2. Turns moist red litmus blue.
   3. Do not affect the acidified K₂Cr₂O₇ paper but turn lime water milky.
   4. Affects the acidified K₂Cr₂O₇ paper and also turns lime water milky.
2. Name :
   1. Two carbonates which do not produce carbon dioxide on heating.
   2. Two nitrates which do not produce nitrogen dioxide on heating.
   3. A brown gas.
   4. Green yellow gas.
   5. Gas with rotten egg smell.
3. Match column A with column B.
   Column A Column B
   1. Blue salt changes to white and then black               1) Ammonium dichromate
   2. Orange coloured compound changes to green        2) Iodine
   3. Red compound changes to brown and then yellow 3) Zinc nitrate
   4. Yellow when hot and white when cold                     4) Copper sulphate
   5. Violet solid changes to violet vapours                     5) Red lead

SECTION -2

1. How will you distinguish between :
   1. Sodium sulphite and sodium carbonate.
   2. Copper and magnesium.
   3. Copper carbonate and copper nitrate.
   4. Soft water and hard water.
   5. Temporary hard water and permanent hard water.
2. What do you observe when dilute sulphuric acid is added to the following :
   1. Sodium sulphide
   2. Sodium carbonate
   3. Sodium sulphite
3. 1. What are soaps and detergents ?
   2. Why do they differ in action ?
4. Can sodium hydroxide solution be used to distinguish between ferrous sulphate and ferric sulphate solution. If so how ?
5. What is the cause of hardness of water ?
6. Write your observation and balanced equation when the following substances are heated :
   1. Ammonium dichromate (b) Red lead
   2. Ammonium chloride (d) Mercuric oxide
7. Give a chemical test to distinguish between the following gases :
   1. NH ₃ andHCl
   2. SO ₂ ang Cl ₂
   3. H ₂ and O ₂