text stringlengths 86 39.2k |
|---|
2493.26ARABIC 503 3.26.1 Arabic Paper 1 503 1 For More Free KCSE Past papers Visit www.freekcsepastpapers.com250For More Free KCSE Past papers Visit www.freekcsepastpapers.com251For More Free KCSE Past papers Visit www.freekcsepastpapers.com2523.26.2 Arabic Paper 2 503 2 For More Free KCSE Past papers Visit www.freekcs... |
THE KENYA NATIONAL EXAMINATIONS COUNCILKenya Certificate of Secondary Education4443 2 AGRICULTURE Paper2 THEORY Nov. 2019 - 2 hours Name ... Index Number Candidate's Signature Date Instr ns to candidates a Write your name and iidex number in the spaces provided above. B Sign and write the date of examination in the spa... |
2 marks 8. State four control measures for fowl typhoid, 2 marks Kenya Certificate of Secondary Education, 201944372919348 Turn overML919348State the function of each of the following: a mallet 4 mark b trocar and canula Amari garden tine mark 2 stock and die mark State four maintenance practices carried out on a wheel... |
1 mark Gi Givea reason for your answer in c i above. Mark 18, The diagram below illustrates a treatment practice for a cow s udder infected with mastitis. Name the causal organism for mastitis. 1 mark Explain the treatment practice illustrated. 0 mark How is mastitis infection detected in a lactating cow? 1 marky How i... |
K.C.S.E 2012C.R.E PAPER 2 1. A Outline Micah's prophecies about the Messiah Micah 5: 1-5 . 7 marks b With reference to Luke 1:13 -17, outline the message of angel Gabriel about John to Zechariah. 7 marks c Give three lessons Christians learn from the incident when Jesus was dedicated. 6 marks 2. A Describe the incident... |
Check www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpap... |
2763.29BUSINESS STUDIES 565 3.29.1 Business Studies Paper 1 565 1 For More Free KCSE Past papers Visit www.freekcsepastpapers.com277For More Free KCSE Past papers Visit www.freekcsepastpapers.com278For More Free KCSE Past papers Visit www.freekcsepastpapers.com279For More Free KCSE Past papers Visit www.freekcsepastpap... |
4marks 1 mark Express 10500 in terms of its prime factors.13 Ww Three police posts X, Y and Z. are such that Y is 50 km on a bearing of 060 from X while Zis 70 km from Y and on a bearing of 300 from X.Using a suitable scale, draw a diagram to represent the above situation. Determine the smallest positive number P such ... |
It took 15 minutes toreplace the wheel. Find the time taken to complete the remaining part of the journey. G marks The producto the maces a AS -05 is a singutr matin2 P. Po p-2Find the value of p. 3 marks Asaleswoman eared a fixed salary of Ksh.x and a commission of Ksh y for eachitem sold. In a certain month she sold ... |
For more free KCSE Revision Papers and Answers visithttp: www.joshuaarimi.comConnect with Joshua Arimi in facebookFor Tips on passing KCSE register http: www.joshuaarimi.comFor more free KCSE Revision Papers and Answers visithttp: www.joshuaarimi.comConnect with Joshua Arimi in facebookFor Tips on passing KCSE register... |
K.C.S.E YEAR 2010PAPER 12.a Distinguish between a deliquescent and a hygroscopic substance. 2 marks b Give one use of hygroscopic substance in the laboratory. 1 mark 3. A What is meant by the terms: 2 marks a. elementb. Atomic number b The formula for a chloride of titanium is TiCl3. What is the formuaof its sulphate? ... |
AL 27.0, 0 16.0 2 marks 7. Complete the table below by writing the poduct formed at the electrodesduring the electrolysis of the electrolytes given in the table. 3 marks ElectrolyteProduct atanodeProduct at cathodeAqueous sodiumsulphate using inertelectrodesoxygen 1 2mark Hydrogen 1 2mark Aqueous copper II sulphate usi... |
The pressure of nitrogen gas contained in a 1dm3 cylinder at -1960C was 107Pascals. Calculate the:a Volume of the gas at 250C and 105 Pascals. 1 marks b Mass of nitrogen gas Molar volume of gas is 24dm3, N 14.0 1 marks 9. Carbon -14,146C, is used in carbon dating. It decays to form nitrogen, 147N.The graph below shows ... |
It decays to form nitrogen, 147N.The graph below shows the amount of carbon -14 left in a sample against itsage in years.a Write a nuclear equation for the decay process of carbon -14. 1 mark b From the graph, determine the;i Half-life of carbon -14; 1 mark ii Percentage of carbon -14 in a sample whose age is 1950 year... |
It is normallyprepared in a fume chamber.a Name two reagents that can be used to prepare hydrogen sulphide in thelaboratory. 1 mark b One of the uses of hydrogen sulphide is to produce sulphur as shown in thefollowing equation;2H2S g SO2 g 3S s 2H2O l Identify the reducing agent in this reaction and give a reason for y... |
Givethe reagents and conditions necessary for converting the oils into:a Margarine 2 marks b Soap 1 mark 14.Using electrons in thee outermost energy level, draw the dot . And cross x diagrams for the molecules H2O and C2H4. H 1, C 6, O 8 2 marks i H2Oii C2H4b The formula of a complex ion is Zn NH3 42 . Name the type of... |
Describechemical tests for each of the following ions in the sample:a Calcium ions; 2 marks b Ammonium ions. 1 mark 17.Analysis of a compound showed that it had the following composition:69.42 carbon, 4.13 hydrogen and the rest oxygen.a Determine the empirical formula of the compound. C 12.0, H 1.0, O 16.0 2 marks b If... |
C 12.0, H 1.0, O 16.0 2 marks b If the mass of one mole of the compound is 242, determine its molecularformula 1 mark 18.The diagram below represents set up for large scale manufacture ofhydrochloric acid. Study it and answer the questions that follow.a Name substance X 1 mark b What is the purpose of the glass beads? ... |
Study it and answer the questions that follow.a Name substance X 1 mark b What is the purpose of the glass beads? 1 mark c Give two uses of hydrochloric acid. 1 mark 19.The half equations involved in a cell are:2H2O l 2e H2 g 2OH- aq : E - 0.83VO2 g 2H2O l 4e 4OH- aq : E 0.40Va Write the oveall equation for the electro... |
Check www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpapers.com for free learning materialcheck www.freekcsepastpap... |
377 BOOKFLYER PRECISE PUBLISHERS c Replace lens A with lens B. Fix the plane mirror at the back of lens B. Repeat the procedure in b above. Measure the distance 2 between the screen and lens B. 2 cm d Remove the mirror from the lens holder. Set the distance d between lens A and lens B to be 65cm. Adjust the position of... |
B i Connect the crocodile clip K to point A.Adjust the potentiometer by turning the knob until the voltmeter reading is maximum. Maximum voltmeter reading volts. 1mark For More Free KCSE past papers visit www.freekcsepastpapers.com380 BOOKFLYER PRECISE PUBLISHERS ii Without adjusting the potentionmeter, disconnect the ... |
For free exams visit www.freekcsepastpapers.com or call 0710765974for free exams visit www.freekcsepastpapers.com or call 0710765974for free exams visit www.freekcsepastpapers.com or call 0710765974for free exams visit www.freekcsepastpapers.com or call 0710765974for free exams visit www.freekcsepastpapers.com or call ... |
2 marks 4Give themainform of transport used in the Trans-Saharan Trade. 1 mark 5Name two groups of people that were involved in the Trans-Atlantic Trade. 2 marks 6Statetwo negative effects of the developmentof motor vehicle transport. 2 marks 7Give two inventions that revolutionalized the textile industry in Britain du... |
2 marks 4Give themainform of transport used in the Trans-Saharan Trade. 1 mark 5Name two groups of people that were involved in the Trans-Atlantic Trade. 2 marks 6Statetwo negative effects of the developmentof motor vehicle transport. 2 marks 7Give two inventions that revolutionalized the textile industry in Britain du... |
2 marks 4Give themainform of transport used in the Trans-Saharan Trade. 1 mark 5Name two groups of people that were involved in the Trans-Atlantic Trade. 2 marks 6Statetwo negative effects of the developmentof motor vehicle transport. 2 marks 7Give two inventions that revolutionalized the textile industry in Britain du... |
2 marks 4Give themainform of transport used in the Trans-Saharan Trade. 1 mark 5Name two groups of people that were involved in the Trans-Atlantic Trade. 2 marks 6Statetwo negative effects of the developmentof motor vehicle transport. 2 marks 7Give two inventions that revolutionalized the textile industry in Britain du... |
For more free past papers visit www.freekcsepastpapers.comfor more free past papers visit www.freekcsepastpapers.comfor more free past papers visit www.freekcsepastpapers.com. |
For More Free KCSE past papers visit www.freekcsepastpapers.comFor More Free KCSE past papers visit www.freekcsepastpapers.comFor More Free KCSE past papers visit www.freekcsepastpapers.comFor More Free KCSE past papers visit www.freekcsepastpapers.comFor More Free KCSE past papers visit www.freekcsepastpapers.comFor M... |
933.6.2 Chemistry Paper 2 233 2 For More Free KCSE Past papers Visit www.freekcsepastpapers.comFor More Free KCSE Past papers Visit www.freekcsepastpapers.com94For More Free KCSE Past papers Visit www.freekcsepastpapers.comFor More Free KCSE Past papers Visit www.freekcsepastpapers.com95For More Free KCSE Past papers V... |
NameIndex Number565 1 Candidate s SignatureBUSINESS STUDIESPaper 1 Date.............................Nov. 20162 hoursTHE KENYA NATIONAL EXAMINATIONS COUNCIL Kenya Certificate of Secondary EducationBUSINESS STUDIES Paper 12 hoursInstructions to candidates a Write your name and index number in the spaces provided above. B... |
For free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers... |
1493.14ART DESIGN 442 3.14.1 Art Design Paper 1 442 1 For More Free KCSE Past papers Visit www.freekcsepastpapers.com150For More Free KCSE Past papers Visit www.freekcsepastpapers.com151For More Free KCSE Past papers Visit www.freekcsepastpapers.com152For More Free KCSE Past papers Visit www.freekcsepastpapers.com153Fo... |
Marks Kenya Certificate of Secondary Education, 2019919417 223es19417 6Given that R and T are related by the equation Log R Log K n Log T, determine thevalue of; oan 1 mark K 2 marks Kenya Cerificate of Secondary Edueation, 20192323Question 2 You are provided with the following: Ametre rule Asstand, boss and clamp Apie... |
2 String ITT TTT T metre rate208 50g, Figure 3 Kenya Certificate of Secondary Education, 2019919417 2323 Turn overRecord the distance d of the 50g mass from the centre of gravity.em Record the volume of the water in the measuring cylinder provided. VE omen 0 mark 0 mark Gi Immerse the 20g mass fully into the water and ... |
Visit www.freekcsepastpapers.com for free revision contentwww.freekcsepastpapers.comwww.freekcsepastpapers.comwww.freekcsepastpapers.comwww.freekcsepastpapers.comwww.freekcsepastpapers.comwww.freekcsepastpapers.comvisit www.freekcsepastpapers.com for free revision contentwww.freekcsepastpapers.comwww.freekcsepastpapers... |
THE KENYA NATIONAL EXAMINATIONS COUNCILKenya Certificate of Secondary Education101 3 ENGLISH Paper 3 Creative Composition and Essays Based on Set Texts Nov. 2019 - 2 hours Candidate's Signature ... Instructions to candidates 2 . Write your name and index number in the spaces provided above. Sign and write the date of e... |
The Compulsory Set Text 20 marks HR, Ole Kulet, Blossoms of the SavannahIrresponsible decisions can lead to serious consequences, Referring closely to H.R.Ole Kulet inBlossoms of the Savannah, write an essay in support of this statement.3. The Optional Set Texts 20 marks Answer any one of the following three questions.... |
For free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers.comfor free past papers visit: www.freekcsepastpapers... |
For more free KCSE Revision Papers and Answers visithttp: www.joshuaarimi.comConnect with Joshua Arimi in facebookFor Tips on passing KCSE register http: www.joshuaarimi.comFor more free KCSE Revision Papers and Answers visithttp: www.joshuaarimi.comConnect with Joshua Arimi in facebookFor Tips on passing KCSE register... |
Www.freekcsepastpapers.comPage 1 CEKENAS MOCK EXAMINATION, 2023 Kenya Certificate of Secondary Education 233 1 CHEMISTRY Paper 1 Theory TIME: 2 HOURS INSTRUCTIONS TO CANDIDATES 1.All working must be clearly shown where necessary.2.Mathematical tables and silent electronic calculations may be used1.Give two difference b... |
Www.freekcsepastpapers.comPage 1 CEKENAS MOCK EXAMINATION, 2023 Kenya Certificate of Secondary Education 233 1 CHEMISTRY Paper 1 Theory TIME: 2 HOURS INSTRUCTIONS TO CANDIDATES 1.All working must be clearly shown where necessary.2.Mathematical tables and silent electronic calculations may be used1.Give two difference b... |
1mark 7.Draw the structure of the followinga Mg 1mark b Hydroxonium ion 1mark 8.When 27.8g of hydrated aluminium oxide OXHOAl was heated to a constant mass 20.6 g of aluminiumoxide was obtained. Determine the value of X Al 27, O 16, H 1 3marks 9.In the Haber process, the industrial manufacture of ammonia is given by th... |
300cm3 of x takes 12 seconds to diffuse through the same pot calculate the relative molecular mass of gas x. N 14, O 16 3marks 15. Draw a well labelled diagram that can be used during electrolysis of molten sodium chloride in the laboratory 3marks 16. The figure below describes the manufacture of detergent B a What typ... |
Explain. 2marks Zinc can Ammonium chloride Carbon manganese iv oxidewww.freekcsepastpapers.comPage 3 20. Write equations to show the effect of heat on each of the following a Ammonium nitrate 1mark b Potassium nitrate 1mark c Anhydrous iron II sulphate 1mark 21. When excess chlorine gas is bubbled through diluted sodiu... |
Starting with sodium metal, describe how a sample of crystal of sodium hydrogen carbonate may be prepared 3marks 25. When 20cm3 of 0.5M sulphuric VI acid was mixed with 20cm3 of 1M NaOH, the temperature of the solution rose from 24.0oC to 32.0oC calculate the molar heat of neutralisation. Specific heat capacity of the ... |
G I V K J L M a i Select elements which belong to the same chemical family 1mark ii Write the formulae of ions for two elements in the same period 1mark b The first ionization energies of two elements K and M at random are 577kJ mol and 494kJ mol. I Write equations for the 1st ionisation energies for elements K and M a... |
2marks d Write an equation to show the reaction between compound E and magnesium metal and give the name of the product formed. 2marks e The following is a structure of a section of a polymerwww.freekcsepastpapers.comPage 5 i Draw the structure of the monomer 1mark ii Give the name of the polymer 1mark iii State one us... |
Explain 2marks 4. A Aqueous potassium sulphate was electrolysed using platinum electrodes in a cell. I Shows the product formed at the anode and cathode with the help of an equation 2marks Anode Cathode ii Why would it not be advisable to electrolyse aqueous potassium sulphate using potassium metal electrodes? 1mark b ... |
I Write an ionic equation for the reaction that took place at the anode 1mark ii Determine the change in mass of the anode which occurred as a result of electrolysis CFaradayICu96500,5.63 1mark Chlorine gas Dry ammonia White fumes of solid Nwww.freekcsepastpapers.comPage 6 5. A The diagram below represents the electrol... |
Explain 2marks ii Calculate the relative mass of Neon 2marks iii Balance the nuclear equation below NC6 1mark iv Distinguish between nuclear fission and nuclear fusion. 1mark c Bismuth undergoes radioactive decay. The table below shows the mass of Bismuth remaining at different times. Time min 0 6 12 22 38 62 100 mass ... |
2M H2SO4 acid 6. Source of heat 7. Phenolphthalein indicator Preparations 1. Solid E 5cm magnesium ribbon 2. Solution F 2M HCl 3. Solution H 0.375M NaOH 4. Solid K sodium benzoate 5. Solid L Ammonium aluminium sulphatewww.freekcsepastpapers.comPage 8 CEKENAS MOCK EXAMINATION, 2023 Kenya Certificate of Secondary Educati... |
Step 4: Repeat step 2 and 3 by placing 9cm3 of solution F and 1cm3 of distilled water shake the contents before use. After each experiment transfer the mixture into the volumetric flask. Repeat the procedure using contents in test tube 3, 4 and 5 as shown in the table below. RETAIN THE SOLUTION IN THE VOLUMETRIC FLASK ... |
On adding 3cm3of 2M sodium hydroxide to a simple of solution B, a white precipitate C is formed that dissolves to form a colourless solution D on adding more sodium hydroxide. On adding 2M aqueous ammonia, a white precipitate E is formed which dissolves in excess aqueous ammonia. On adding 5cm3 of 1M lead II nitrate to... |
Explain why M would be more effective in protecting iron from rusting than P. 2 marks b Calculate the E value for the cell represented as M s M2 aq P aq P s . 1 mark 7. A State Charles s law. 1mark b A sealed glass tube containing air at s.t.p was immersed in water at 1000c. Assuming that there was no increase in the v... |
Describe you would prepare a pure sample of zinc carbonate starting with zinc oxide. 3marks 16. A The diagram below shows a structure of water molecules. Name the bonds labeled R - mark S - mark b Using dot and cross x diagram show bonding in; i Potassium chloride K 19 Cl 17 1mark ii Carbon tetrachloride C 6, Cl 17 1ma... |
2marks 21. The diagram below represents a paper chromatogram of pure inks marked 1, 2, 3 and 4. Ink 5 is a mixture that contains inks 1 and 4 only. A Give a reason why ink 1 moves faster to the solvent front than ink 2. 1mark b Show on the chromatogram diagram the: i chromatography of ink 5. 1mark ii The baseline 1mark... |
Plastics are made from petroleum products. A Name two plastics derived from ethene and give their use. 2marks b State one disadvantage of continuous use of plastics 1mark 26. Dilute hydrochloric acid and Sodium sulphite were reacted as shown in the set-up below: a Name the gas produced in the flask 1mark b Write a chem... |
1mk ii Write the formula of the compound formed between element G and D. 1mk iii Compare the following with explanations: I The electric conductivity of A and E. 2mks II The atomic radius of B and D. 2mks iv Which element has the highest ionisation energy? Explain. 2mks v Show on the periodic table above an element Z b... |
Study the reaction scheme shown below and answer the questions that follow. A Identify the following: i Metal S 1mk ii Green precipitate T: 1mk iii Blue precipitate U: 1mk b Write ionic equation for the reaction that takes place in step II. 1mk c i Distinguish between a strong acid and a weak acid. 1mk ii A student tes... |
1mk c In electrolysis of dilute magnesium sulphate using inert electrodes, a current of 2.5A was passed through the electrolyte for 1 hour 20 minutes. Calculate the volume of the gas produced at the anode at standard temperature and pressure s.t.p. IF 96500C, molar volume at s.t.p 22.4 dm3 3mks 5. A Define standard ent... |
1mk iii Write the equation for the reaction between solid E and concentrated sulphuric VI acid. 1mk iv State and explain two observations made during the experiment. 2mks b During the industrial manufacture of nitric V acid, a mixture of purified dry ammonia and air is passed through a catalyst at 900oC. A series of re... |
I Calcium chloride 1mk II Steel diaphragm 1mk iv State one use of sodium metal. 1mk c i Give the name and formula of the major ore from which copper is extracted. 1mk ii Draw a diagram of a set up used in the electrolytic purification of blister copper. 2mks EASTERN CLUSTER EVALUATION - 2023 Kenya Certificate of Second... |
1mk c i Give the name and formula of the major ore from which copper is extracted. 1mk ii Draw a diagram of a set up used in the electrolytic purification of blister copper. 2mks EASTERN CLUSTER EVALUATION - 2023 Kenya Certificate of Secondary Education K.C.S.E 233 3 CHEMISTRY PRACTICAL Paper 3 CONFIDENTIAL INSTRUCTION... |
1mk ii Draw a diagram of a set up used in the electrolytic purification of blister copper. 2mks EASTERN CLUSTER EVALUATION - 2023 Kenya Certificate of Secondary Education K.C.S.E 233 3 CHEMISTRY PRACTICAL Paper 3 CONFIDENTIAL INSTRUCTIONS TO SCHOOLS In addition to the normal fittings and apparatus in the laboratory, ea... |
2mks EASTERN CLUSTER EVALUATION - 2023 Kenya Certificate of Secondary Education K.C.S.E 233 3 CHEMISTRY PRACTICAL Paper 3 CONFIDENTIAL INSTRUCTIONS TO SCHOOLS In addition to the normal fittings and apparatus in the laboratory, each candidate would need the following: Solid P in a boiling tube 100 cm3 of solution Q 1 Bu... |
Liquid G is 4 cm3 of ethanol supplied in a stoppered test tubewww.freekcsepastpapers.comPage 27 EASTERN CLUSTER EVALUATION - 2023 Kenya Certificate of Secondary Education K.C.S.E 233 3 CHEMISTRY Paper 3 PRACTICAL TIME: 2 HOURS INSTRUCTIONS TO CANDIDATES Answer all questions. You are not allowed to start working with th... |
E Repeat the procedure c and d three more times, heating the solution in a water bath and record the temperature in the table I. Retain the contents of the boiling tube for use in procedure II. F Complete the table by calculating the solubility of solid P at the different temperatures. The solubility of a substance is ... |
A Give the name of the Structure. 1mk b What is the total number of electrons used for bonding in a molecule of the structured Named in a 2mks 8. The purple color of a solution containing manganese vii ions disappears when iron ii ions are added. The ionic equation for the reaction which occurs is; MnO 4 aq 5Fe2 aq 8H ... |
The letters do not represent the actual symbols of elements. R S N Q T U P a Indicate in the grid the position of an element represented by letter V, whose atomic number is 14. 1mk b Select a letter which represents a monoatomic gas. 1mk c Write an equation for the reaction between Q and T 1mk 17. The table below shows... |
The grid below shows part of the periodic table. Study it and answer the questions that follow. The letters do not represent the true symbols of the elements. I II III IV V VI VII VIII a b Which element forms ions with charge of -2? Explain your answer. 2mks c Which element is the most reactive metal? 1mk d Name the ch... |
I Other than Nitric V acid, name another product that is formed. 1mk ii State and explain the effect on the position of equilibrium if the reaction is carried out; I at 10 atmospheres pressure and 4500C. 2mks II at 9000C and 20 atmospheres pressure. 2mks III In the absence of a catalyst. 1mk c State and explain the eff... |
E Write an equation forming compound T 1Mk f Draw the structural formula of M and give its name 1Mk g I Name compound K 1Mk II If the relative molecular mass of K is 84,000, determine the value of n C 12, H 1 2Mks 4. The following data was obtained during an experiment to determine the molar heat of combustion of metha... |
Half cells E Volts N aq e N s -2.92 J aq e J s 0.52 K aq e K2 g 0.00 G2 g e G- aq 1.36 M2 aq 2e M s -0.44 i Identify the strongest reducing agent. Give a reason for your answer. 1mk ii Which two half cells would produce the highest potential difference when combined. 1mk iii Explain whether the reaction represented bel... |
1mk c Give reasons why excess hydrogen chloride gas is dissolved using the funnel arrangement. 1mk d State what will be observed when the reaction in the combustion tube is complete. 1mk www.freekcsepastpapers.comPage 46 7. A Define radioactivity. 1mk b Give two differences between chemical and nuclear reactions. 2mks ... |
250ml empty beaker 7. Glass rod 8. About 50cm3 of 0.5m sulphuric VI acid labelled solution G 9. About 70cm3 of 1m sodium hydroxide solution labelled solution F 10. 10ml measuring cylinder 11. 100ml empty beaker 12. 0-110 C thermometer 13. One burette 0-50ml 14. One 25.0ml pipette 15. One pipette filler 16. Retort stand... |
Solution S is 0.2m Hydrochloric acid prepared by dissolving 17.2cm3 of concentrated hydrochloric acid in 1 litre. 5. Solution G is 0.5m sulphuric vi acid prepared by dissolving 27.5cm3 of concentrated sulphuric vi acid in 1 litre of solution Density 1.84g cm3 6. 0.5m sodium chloride solution is prepared by dissolving 2... |
Pipette 25.0cm3 of solution T and place it into a conical flask, add 3 drops of methyl orange indicator and titrate with solution S from the burette. Record your results in the table I below. Repeat the titration two more times and complete the table below. 3mks I II III Final burette reading cm3 Initial burette readin... |
2mks 2. State two functions of a fume chamber in a laboratory. 2mks 3. The diagram below shows a structure of water molecule. 4. Two samples of water were put in separate beakers. They were boiled for some time and allowed to cool. Equal volumes of soap were added to each sample and stirred. Water in beaker C readily f... |
2mks 9. Hydrogen sulphide gas was passed through a solution of iron ii chloride. I State two observations made. 2mks ii Write an equation for the reaction taking place in i above. 1mk 10. Two clean iron nails of the same size were connected with wire to magnesium and silver stripes as shown. State and explain the obser... |
1mk b Name process B 1mk c What does PVC stand for? 1mk www.freekcsepastpapers.comPage 60 16. The set up below was used to investigate a property of ammonia gas. I What property of ammonia gas is being investigated? 1mk ii The experiment above is commonly known as the fountain experiment ; explain. 2mks iii Identify an... |
1mk www.freekcsepastpapers.comPage 61 24. The curves below were obtained when equal volumes of nitric v acid of same concentration were reacted with 25.0g of calcium carbonate, labelled Y. In one case, the acid was first warmed before the reaction. A Which curve represents the reaction involving warm nitric v acid? 1mk... |
All working must be clearly shown where necessary. 1. The diagram shows part of the Periodic Table. The letters are not the actual symbols of the elements. A Compare the reactivity between elements Q and T. 2mks b Explain the electrical conductivity of the chloride of element T. 2mks c Compare the melting and boiling p... |
Next to each letter, A to F, in the table below is the molecular formula of an organic compound. A Choose a molecular formula above that represents an organic compound below. Write down only the letter A to F next to the question numbers i A haloalkane mk ii An alcohol mark iii An unsaturated hydrocarbon mark iv A prod... |
A Name the process represented by A and B 2mks b Identify the reagents required for process B, C and D 3mks c Write a chemical equation of the reaction that occurs in process B 1mk d With an aid of a diagram, explain how you would obtain a pure sample of Zinc by process E. 2mks e State two uses of Zinc metal 2mks 5. A ... |
2mks iv Calculate the molar enthalpy of solution of concentrated sulphuric VI acid given that T for the reaction T 1oC. Density of water 1gcm-3; specific heat capacity of water 4.2kJkg-1K-1 . 4mks 6. A Consider the electrochemical cell represented by the cell notation below, where X is an unknown metal: Pt s Fe2 aq , F... |
A i What is a salt? 1mk ii Write the formula of any two double salts. 1mk b A student has found that her sample of potassium nitrate is contaminated with small amounts of a green solid. She picks out a small piece of the green solid and finds that it is insoluble in water. I Describe how you would make a pure sample of... |
Bromine water supplied with a dropper 23. 0.5g of solid K oxalic acid. 24. 0.5g of solid P Sodium sulphite The students should have access to the following a. 2.0M NaOH solution with a dropper b. 1.0M barium nitrate solution with a dropper c. Bromine water with a dropper d. Acidified potassium manganate vii with a drop... |
1 mark b 50cm3 of carbon IV oxide diffuses through a porous plate in 15 seconds. Calculate the time taken by 75cm3 o nitrogen IV oxide to diffuse through the same plate under similar conditions. C 12, O 16, N 14 3 marks 21. A Give equations to show the reactions that take place when: i Magnesium reacts with dilute hydr... |
Boilers used for boiling hard water are normally covered with scales after some time. A What is the chemical name for boilers scales? 1 mark b How is the boiler scale removed? 1 mark 27. State Charle s law. 1 mark www.freekcsepastpapers.comPage 80 IMENTI SOUTH EXAMINATIONS, 2023 Kenya Certificate of Secondary Education... |
1 mark iii Write an equation for the reaction that took place in tube K. 1 mark b i If 320cm3 of ammonia gas reacted with copper II oxide, calculate the volume of nitrogen gas produced. 1 mark ii The mass of copper II oxide that reacted. Cu 63.5, O 16.0, 1 mole of a gas occupies 24 litres at r.t.p 2 marks iii At the en... |
1 mark iii Calculate the mass of the solution. 1 mark iv Calculate the mass of the residue. 1 mark v Calculate the mass of water. 1 mark vi Calculate the solubility of salt R in g per 100g of water at 25oC. 2 marks b Hard water has both advantages and disadvantages. Give one advantage and one disadvantage. I Advantage ... |
Solid A is 4.0g oxalic acid COOH 2 2H2O accurately measured and placed in a stoppered boiling tube 2. Solution B is 0.25M NaOH prepared by dissolving 10g NaOH pellets in 600cm3 of water and topping up to 100cm3 solution with distilled water 3. Solution C is prepared by dissolving a mixture of aluminium nitrate and sodi... |
KMnO4 is prepared by dissolving 3.2g KMnO4 in 400cm3 of 2.0M sulphuric VI acid and topping up to 1000cm3 of solution using distilled water 12. Bromine water of prepared by dissolving 1cm3 of bromine water is a fumed chamber. Www.freekcsepastpapers.comPage 86 IMENTI SOUTH EXAMINATIONS, 2023 Kenya Certificate of Secondar... |
Complete the table below by selecting the appropriate pH for each substance from pH values 1.0, 4.0, 7.0 and 11. 3mks Substance pH Sodium carbonate Lemon juice Sodium chloride 4. The structure below represents a portion of an additional polymer. A Draw the structure of monomer. 1mk b If the portion of the polymer has a... |
Calculate the temperature in 00c that the same gas would occupy 283cm3 at 750mmHg pressure. 2mks 9. Study the set-up of apparatus below and answer the questions that follow. A Write the equation for the reaction that occur in tube V 1mk b State one industrial use of gas W 1mk c Name another metal that can be used in tu... |
A Write an equation for the reaction of formation of ammonium chloride and substance A. 1mk b State how the following are carried out i Process 1 1mk ii Process 2 1mk 14. The table below shows the solubility of salt X at various temperatures. Temperature 0c Solubility g 100g of H2O 0 36 40 30 80 25 100 i A saturated so... |
Density of solution 1g cm3, specific heat capacity 4.2 J g K Determine; a The heat of reaction 1mk b The molar heat of displacement of copper 2mk 19. The grid below is part of the periodic to table. Use it to answer the question that follow. The letters are not the actual symbol of the elements P S T W X M Y R Z a Draw... |
A Phosphorous has a melting point of 440C or 5900C . Explain 1mk b Why is phosphorous stored under water 1mk c Using dot and cross diagrams, draw the structure of aluminium oxide 1mk 24. A gold rings contain 3.94g of gold. Calculate the number of gold atoms in the ring. Avogadro s constant 6.02 1023, Au 197 2mks 25. A ... |
1mark www.freekcsepastpapers.comPage 102 3. A Crude oil is a mixture of several compounds which are separated in a refinery as shown below. I What is the name of the apparatus above 1mark ii What is the name of the process which is used in separation of crude oil 1mark iii What physical property of the compounds in the... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.