nakuru district secondary schools trial examination - KCSE Online

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.................................................................................................................................................................................................................................................................................................................................................................................................................................................................11glass wool soaked in watertest tubeexcess zinc powdergas K(a)Why was it necessary to heat the moist glass wool before heating zinc powder (1mark).................................................................................................................................................................................................................................................................................................................................................................................................................................................................(b)Identify gas K ................................................................................................(1mark)(c) Describe a test for gas K (1mark)...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................12(a)Give the names of the following compoundsi) CH 3 CH=CH CH 2 CH 3 (1Mark)Visit:6www.kcse-online.info for thousands of free Past papers
.......................................................................................................................Oii) CH 3 CH 2 CH 2 C – OH(1mark)..................................................................................................................................(b)Ethane and ethene react with bromine according to the equation below.(i) C 2 H 6(g) + Br 2(g) C 2 H S Br (5) + HBr(ii) C 2 H 4(g) + Br 2(g) C 2 H 4 Br 2Name the type of bromination reaction that take place in (i) and (ii)(1mark)(i)...................................................................................................................................................(ii)……………………………………………………………………………………………….13 Study the scheme below and answer the questions that followSolid E + Ca(OH) 2 pasteStep IwarmAmmonia GasStep IIBubble over aluminum sulphate solution and filterSolid F(a) Identify solid E................................................................................................................( 1mark)(b) Write an ionic equation for the reaction in step II that produces solid F(1mark)Visit:7www.kcse-online.info for thousands of free Past papers
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Page 3 and 4: 3. Identify (3marks)a) solution K
Page 5: Timea) Which of the two R and P is
Page 9 and 10: 16 Four metals F,G,H, and J were ea
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Page 13 and 14: Substance A........................

nakuru district secondary schools trial examination - KCSE Online

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