Jamb Chemistry 2003 Past Questions and Answers

Question 31:

• JAMB 2003

Chlorine gas is prepared in the laboratory by

A. Adding concentrated hydrochloric acid to solid manganese (IV) oxide
B. Aciding concentrated tetraoxosulphate (VI) acid to solid sodium chloride
C. Dropping concentrated hydrochloric acid onto potassium tetraoxomanganate (VI) crystals
D. Aciding concentrated tetraoxosulphate (VI) acid to hydrochloric acid

Question 32:

• JAMB 2003

Metals of the first transition series have special properties which are different from those of groups I and II elements because they have partially filled

A. S orbitals
B. P orbitals
C. D orbitals
D. F orbitals

Question 33:

• JAMB 2003

Hydrogen can be displaced from a hot alkaline solution by

A. Fe
B. Cu
C. Ca
D. Sn

Question 34:

• JAMB 2003

Which of the following statements is true of sulphur (IV) oxide?

A. It forms tetraoxosulphate (VI) acid with water
B. It is an odourless gas
C. It is an acid hybride
D. It forms white precipitate with acidified barium chloride

Question 35:

• JAMB 2003

The salt that will form a precipitate soluble in excess ammonia solution is

A. Ca(NO₃)₂
B. Cu(NO_{3[sub])[sub]2}[/sub][/sub]
C. Mg(NO_{3[sub])[sub]2}[/sub][/sub]
D. Al(NO_{3[sub])[sub]3}[/sub][/sub]