Jamb Chemistry 2002 Past Questions and Answers

Question 21:

• JAMB 2002

The furring of kettles is caused by the presence in the water of

A. Calcium tetraoxosulphate (VI)
B. Calcium hydrogentrioxocarbonate (IV)
C. Calcium hydroxide
D. Calcium trioxocarbonate (IV)

Question 22:

• JAMB 2002

The property which makes alcohol soluble in water is the

A. Boiling point
B. Hydrogen bonding
C. Ionic character
D. Covalent nature

Question 23:

• JAMB 2002

Steam changes the colour of anhydrous cobalt (II) chloride from

A. Blue to pink
B. White to red
C. White to green
D. Blue to white

Question 24:

• JAMB 2002

The gas that gives brown colouration in brown ring test is

A. NO
B. CO₂
C. NO₂
D. CO

Question 25:

• JAMB 2002

Ethanol can easily be produced by

A. Fermentation of starch
B. Distillation of starch solution
C. Catalytic oxidation of methane
D. Destructive distillation of wood