Waec Chemistry 2013 Past Questions and Answers

Question 41:

• WAEC 2013

Which of the following reactions is common to all hydrocarbones?

A. Combustion
B. Addition
C. Polymerization
D. Condensation

Question 42:

• WAEC 2013

A hydrocarbon compound contains 92.3% carbon Determine its empirical formula [H = 1.00; C = 12.0]

A. CH
B. CH_2-
C. CH₃
D. C₃H₂

Question 43:

• WAEC 2013

The main function of limestone in the blast furnace is to

A. Act as catalyst
B. Act as reducing agent
C. Remove impurity
D. Supply carbon (IV) oxide

Question 44:

• WAEC 2013

Which of the following raw materials is used in a plastic industry?

A. Ethene
B. Methane
C. Calcium
D. Hydrogen

Question 45:

• WAEC 2013

Which of the following statements about fine chemical is correct? It

A. Is injurious to health
B. Has low degree of purity
C. Is produced in relatively small amount
D. Can be stored for a long time