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Chemistry Past Questions

Study and practice Chemistry past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.

64 questions JAMB 2505 WAEC 1623 NECO 168 CUSTOM 10

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Past Questions

64 questions

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Question 31

jamb 2015

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

Awashing under pressure

Bdrying over phosphorus (V) oxide

Cpassing the mixture to the limewater

Dusing ammonical copper (I) chlorine

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Question 32

jamb 2015

Iron is often galvanized in order to

AMake it more malleable

BRemove the impurities unit

CProtect it against corrosion

DRender it passive

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Question 33

jamb 2015

Which of these require crystallization most?

ADrug making

BCement making

CPaint making

DPerfume making

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Question 34

jamb 2015

The filter in the cigarette reduce the nicotine construct by

Aburning

Badsorption

Cevaporation

Dabsorption

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