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

Which of these statements is TRUE about carbon (IV) oxide? (JAMB 1992)

A. It supports combustion
B. It is strongly acidic in water
C. It is very soluble in water
D. It supports the burning of magnesium to produce magnesium oxide

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 shape of a graphite crystal is _______ (WASSCE 2015)

A. tetrahedral
B. pyramidal.
C. octahedral.
D. hexagonal.