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Most Failed Questions on Jamb Chemistry 2006
Chemistry
Admin Admin
22-01-2016 20:41:00 +0000Below are some questions that a great percentage of people who attempted them failed. DO you know the answer to these questions? Lets all attempt to answer them for practices makes perfect. :)
Question 6: If the heat of combustion of hydrogen is -285.8kJ, what is the heat of formation of water?
A. -285.kJ
B. -571.6kJ
C. +571.6kJ
D. +285.8kJ
Question 42: The efficiency of a solid catalyst to increase reaction rates depends on its
A. concentration
B. solubility
C. quantity
D. surface area
Question 48: The characteristic colour of the flame shown when a copper salt moistened with concentrated hydrochloric acid on a platinum wire is put on a bunsen burner is
A. green
B. lilac
C. yellow
D. brick-red
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