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These resources are designed to help you familiarize yourself with the exam format, identify key topics, and practice effectively. Whether you're preparing for the May/June or GCE sessions, our curated materials provide both objective and theory questions to enhance your study sessions.","tags","waec nigeria west africa examination council","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",18,"createdOn",1755991949910,"updatedOn","questionsCount",27220,"courseCount",23,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_110":414},"6PKlGJognfpLLll1UlW2iSiszchZUF","q","Which of the following reactions represents the laboratory preparation of hydrogen?","ans",[414],2,"1989","course","chemistry","opts",[420,421,422,423,424],"C_(s) + H₂O_(l) → CO_(g) + H_2(g)","2Na_(s) + 2H₂O_(l) → 2NaOH_(aq) + H_2(g)","Zn_{(s) + 2HCI_(aq) → ZnCI_2(aq) + H_2(g)\n}","Cu_(s) + H₂O_(l) → CuO_(s) + H_2(g)","2AI_(s) + 3H₂O_{(l) → Al₂O_3(s) + 3H_2(g)\n}","2","initComment","initReply","actionData","errors"]

WAEC - Chemistry (1989 - No. 2)

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