Class-9 Chemistry SEP

Pre-foundation Career Care Programmes (PCCP) Division SESSION-2019-20 SCHOOL EXAMINATION PREPARATORY SHEETS (SEP SHEETS : PART-2) CLASS — IX CHEMISTRY STUDY CENTRE : ____________________ NAME OF STUDENT ______________________ ROLL NO. _____________ BATCH _______ IMPORTANT INSTRUCTIONS 1. Student has to write all the answers in the space provided in the SEP Sheet only. 2. SEP Sheet is prepared to enhance the basic knowledge of students of each topic in every subject. 3. SEP Sheet contains different questions based on NCERT pattern. 4. SEP Sheet is divided into three sections, Very Short Answer Questions, Short Answer Questions and Long Answer Questions. 5. Before taking the sheet of next topic student has to submit his / her previous sheet to his respective teacher.

CHEMISTRY IS MATTER AROUND US PURE CLASS : IX Lecture — 1 Very Short Answer Type Questions [ 1 Mark each ] 1. Is brass a mixture or a compound ? ........................................................................................................................................................... 2. Classify the following elements as metal, non-metal or metalloid - Aluminium, Fluorine, Gallium, Phosphorous Krypton, Tellurium, Barium, Strontium. ........................................................................................................................................................... 3. Give one example each of homogenous and heterogenous mixture. ........................................................................................................................................................... ........................................................................................................................................................... Short Answer Type Questions [ 3 Marks each ] 4. Define Element. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. Define Mixture. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Long Answer Type Questions [ 4 Marks each ] 6. Explain why water is a compound and not a mixture ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Lecture — 2 Very Short Answer Type Questions [ 1 Mark each ] 1. What is Solute ? ........................................................................................................................................................... 2. What is Solvent ? ........................................................................................................................................................... 3. What is the size of particles of true solution ? ........................................................................................................................................................... ..................................................................................................................................................... Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-21

Short Answer Type Questions [ 3 Marks each ] 4. Define solution. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. What is the meaning of concentration of a solution ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Long Answer Type Questions [ 4 Marks each ] 6. How would you prepare 500 gm of aqueous solution containing 15% mass by mass of sucrose ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Lecture — 3 Very Short Answer Type Questions [ 1 Mark each ] 1. What is meant by aerosols ? ........................................................................................................................................................... 2. Name the colloidal solution that is obtained from tree. ........................................................................................................................................................... 3. What is the size of particles of colloidal solution ? ........................................................................................................................................................... ......................................................................................................................................................... Short Answer Type Questions [ 3 Marks each ] 4. What is Tyndall effect ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. What is Electrophoresis ? ........................................................................................................................................................... ........................................................................................................................................................... Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-22

........................................................................................................................................................... ........................................................................................................................................................... Long Answer Type Questions [ 4 Marks each ] 6. Write the differences between true solution, colloidal solution and suspension based on particle size. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Total Marks Total Marks EVALUATION REMARK SHEET Obtained Remarks & Signature by teacher Maximum Marks Remarks & Signature by Parents Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-23

Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-24

Lecture — 1 ATOMS AND MOLECULES Very Short Answers Type Questions [ 1 Mark each ] 1. State the law of constant proportion. ........................................................................................................................................................... ........................................................................................................................................................... 2. State the law of conservation of mass. ........................................................................................................................................................... ........................................................................................................................................................... 3. Find the mass ratio of the combining elements in carbon dioxide (CO2). ........................................................................................................................................................ Short Answers Type Questions [ 3 Marks each ] 4. 15.9 g of copper sulphate and 10.6 g of sodium carbonate were made to react with each other. As a result, 14.2 g of sodium sulphate and 12.3 g of copper carbonate were formed. Show that these results are in agreement with the law of conservation of mass. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. 1.4625 g of a sample of sodium chloride contains 0.575 g of sodium and 0.8875 g of chlorine. In another sample, 2.925 g of sodium chloride was found to contain 1.15 g of sodium and 1.775 g of chlorine. Show that these data are in agreement with the law of constant proportion. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Long Answers Type Questions [ 4 Marks each ] 6. What are the postulates of Dalton’s atomic theory ? What are the limitations of the theory ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-25

........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Total Marks Lecture — 2 Very Short Answers Type Questions [ 1 Mark each ] 1. Smallest particle of a matter called ? ........................................................................................................................................................... 2. Shorthand representation of an element called ? ........................................................................................................................................................... 3. Which of the following is the correct symbol for cobalt, CO or Co ? ........................................................................................................................................................... Short Answers Type Questions [ 3 Marks each ] 4. Differentiate between an atom and a molecule. ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. What information do you get from the symbol of an element ? ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Long Answers Type Questions [ 4 Marks each ] 6. What is atomicity ? Classify the following on the basis of atomicity. (i) NH3 (ii) CO2 (iii) O3 (iv) N2 (v) Cl2 (vi) NO2 (vii) Ar (viii) S8 (ix) C2H6 ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-26

........................................................................................................................................................... ...........................................................................................................................................................  Total Marks Lecture — 3 Very Short Answers Type Questions [ 1 Mark each ] 1. Calculate the valency of calcium in calcium phosphate, Ca3(PO4)2. ........................................................................................................................................................... ........................................................................................................................................................... 2. What is the valency of nitrogen in ammonia (NH3). ........................................................................................................................................................... ........................................................................................................................................................... 3. What is the valency of copper in Cu2Cl2. ........................................................................................................................................................... ........................................................................................................................................................... Short Answers Type Questions [ 3 Marks each ] 4. Indicate the cations and anions present in the following compounds : (i) (NH4)2SO4 (ii) Ca(NO3)2 (iii) CH3COONa (iv) H2SO4 ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... 5. Identify the ionic and covalent compound : NaCl, HCl, H2O, Cl2, MgO ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Long Answers Type Questions [ 4 Marks each ] 6. Write the chemical formulae of : (i) Calcium nitrate (ii) Aluminium chloride (iii) Bismuth(III) phosphate (iv) Copper(I) chloride (v) Sodium phosphate (vi) Gold(III) chloride ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-27

Total Marks Total Marks EVALUATION REMARK SHEET Obtained Remarks & Signature by teacher Maximum Marks Remarks & Signature by Parents Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-28

Corporate Office : CG Tower, A-46 & 52, IPIA, Near City Mall, Jhalawar Road, Kota (Raj.) – 324005 PCCP Head Office: Plot No. A-51 [A], IPIA, Near Resonance CG Tower; Contact : 91-0744-6635569 Pre-foundation Career Care Programmes(PCCP) Division Website : www.resonance.ac.in | E-mail : [email protected] SEP SHEET(PART-2) Toll Free : | 1800 258 5555 | CIN: U80302RJ2007PLC024029 CHEMISTRY_CLASS-IX_PAGE-29