Chemistry and Industry - Jamb Chemistry Past Questions and Answers

Question 106:

• JAMB 2002

The most important use of hydrogen is in the

A. Manufacture of ammonia
B. Manufacture of methyl alcohol
C. Manufacture of ethyl alcohol
D. Hydrogenation of oils

Question 107:

• JAMB 2002

Hydrogen is readily released when dilute hydrochloric acid reacts with

A. Cu
B. Na
C. Au
D. Ag

Question 108:

• JAMB 2003

A gas exerts pressure on its container because

A. Some of its molecules are moving faster than others
B. Of the collision of the molecules with each other
C. Of the mass of the molecules of gas
D. The molecules of a gas colide with the walls of the container

Question 109:

• 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 110:

• JAMB 2003

Chlorine gas turns a damp starch-iodide paper

A. Pink
B. Colourless
C. Red
D. Dark blue