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chemistry Practice tests Neco, Jamb, Wascce,SSce, Sat, Gre, Toefel, Gmat Online

Practice chemistry tests question Below by selecting the right option.


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Which of the following pairs of substances will react further with oxygen to form a higher oxide?




 NO and H2O
B


CO and CO2
C


 SO2 and NO
D

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The characteristic colour of the flame shown when a copper salt moistened with concentrated hydrochloric acid on a platinum wire is put on Bunsen burner is




green
B


yellow
C


brick-red
D

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In the industrial production of H2 from natural gas, the CO2 produced along with the H2 is removed by




drying over phosphor
B


passing the mixture
C


using ammoniacal cop
D

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