Chemistry Practice Test – Carbon and its Compounds (Questions with Answers and Explanations)

Coal fire should not be used in poorly ventilated rooms because ______ (JAMB 1990)

A. of the accumulation of CO which causes deep sleep
B. it is usually too hot
C. of the accumulation of CO which causes suffocation
D. it removes most of the gases in the rooms

The process which return carbon (IV) oxide to the atmosphere include ______ (JAMB 2002)

A. photosynthesis, respiration and transpiration
B. respiration, decay and combustion
C. photosynthesis, decay and respiration
D. ozone depletion, combustion and decay

When steam is passed over red-hot carbon, the substances produced are _____ (JAMB 2004)

A. hydrogen and carbon (II) oxide
B. hydrogen and carbon (IV) oxide
C. hydrogen trioxocarbonate (IV) acid
D. hydrogen, oxygen and carbon (IV) oxide.

The fuel gas labelled L is ______ (JAMB 2007)

An experiment produces a gaseous mixture of carbon (IV) oxide and carbon (II) oxide. In order to obtain pure carbon (II) oxides the gas mixture should be ______ (JAMB 1993)

A. passed over heated copper (II) oxide
B. bubbled through concentrated tetraoxosulphate (VI) acid.
C. bubbled through sodium hydroxide solution
D. bubbled through water.