Post Utme Chemistry Past Questions and Answers

Question 1136:

The compound with the highest ionic character among the following is ____________

A. \(PCl _{5}\)
B. \(CCl _{4}\)
C. \(BCl _{3}\)
D. \(CsCl\)

Question 1137:

Why is the hydrogen gas not found in the atmosphere? It readily reacts with ____________

A. Carbon (IV) oxide
B. Oxygen
C. Nitrogen
D. Carbon (II) oxide

Question 1138:

Apart from water, the other product(s) of the neutralization reaction between \(NaOH\) solution and nitrogen (IV) oxide is/are ____________

A. \(NaNO _{2}\)
B. \(NaNO _{3}\)
C. \(NaNO _{3}\) and \(HNO _{3}\)
D. \(NaNO _{2}\) and \(NaNO _{3}\)

Question 1139:

An acid and its conjugate base ____________

A. Are oppositely charged
B. Differ only by a hydroxide ion
C. Differ only by an electron
D. Differ only a proton

Question 1140:

A complex salt is ____________

A. KAl( \(\left.SO _{4}\right) \cdot 12 H _{2} O\)
B. \(Cu \left( NH _{3}\)_{4} Cl _{2}\)
C. \(K _{2} S _{2} O _{1} .5 H _{2} O\)
D. \(Mg ( OH ) Cl\)