Jamb Chemistry 2000 Past Questions and Answers

Question 1:

• JAMB 2000

A mixture of iodine and sulphur crystals can be separated by treatment with

A. Water to filter off sulphur
B. Carbon (IV) sulphide to filter off iodine
C. Ethanoic acid to filter off sulphur
D. Methanol to filter off iodine

Question 2:

• JAMB 2000

A mixture of iodine and sulphur crystals can be separated by treatment with

A. Water to filter off sulphur
B. Carbon (IV) sulphide to filter off iodine
C. Ethanoic acid to filter off sulphur
D. Methanol to filter off iodine

Question 3:

• JAMB 2000

Sieving is a technique used to separate mixture containing solid particles of

A. Small sizes
B. Large sizes
C. Differents sizes
D. The same sizes

Question 4:

• JAMB 2000

Which of the following compounds is composed of Al, Si, O and H?

A. Epsom salt
B. Limestone
C. Clay
D. Urea

Question 5:

• JAMB 2000

50 cm³ of carbon (II) oxide was exploded with 150 cm³ of air containing 20% oxygen by volume. Which of the reactants was in excess?

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