Post Utme Chemistry Past Questions and Answers

Question 1101:

Sulphur ____________

A. Forms two alkaline oxides
B. Is spontaneously inflammable
C. Burns with a blue flame
D. Conducts electricity in the molten state

Question 1102:

Which of the following combination of reagents will reacts to give chlorine gas?

A. Sodium chloride, conc. \(H _{2} SO _{4}\) and Manganese (IV) oxide
B. Potassium tetraoxomangante
C. Potassium trioxochloide (V) and conc. \(H _{2} SO _{4}\)
D. Potassium tetraoxomangante (VI) and conc. \(H _{2} SO _{4}\)

Question 1103:

Stainless steel is an alloy of ____________

A. Carbon, iron and lead
B. Carbon, iron and chromium
C. Carbon, iron and copper
D. Carbon, iron and silver
E. Carbon and iron only

Question 1104:

A gas that can behave as a reducing agent towards chlorine and as an oxidizing agent towards ____________

A. \(O _{2} \)
B. NO
C. SO
D. \(NH _{3}\)
E. \(CO _{2}\)

Question 1105:

An element that can exist in two or more different structure forms which possess the same chemical properties is said to exhibit ____________

A. Polymerism
B. Isotropy
C. Isomorphism
D. Isomerism
E. Allotropy