Waec Chemistry 2008 Past Questions and Answers

Question 36:

• WAEC 2008

When ethanol is heated with excess concentrated tetraoxosulphate (VI) acid, the organic product formed is

A. Ethanal
B. Ethanoic acid
C. Ethane
D. Ethene

Question 37:

• WAEC 2008

The hydrolysis of groundnut oil by potassium hydroxide is known as

A. Hydrogenation
B. Saponification
C. Esteriffication
D. Neutralization

Question 38:

• WAEC 2008

What is the main type of reaction alkenes undergo?

A. Addition
B. Condensation
C. Elimination
D. Substitutio

Question 39:

• WAEC 2008

Arrange the following compounds in order of increasing boiling point
l.CH 3CH2CH2OH
II.CH 3CH 2OH
III.CH3CH2CH2CH2OH
IV. CH3CH 2CH2CH 2CH 3

A. I < II < IV < III
B. IV < III < II < I
C. I < II < III < IV
D. IV < II < I < III

Question 40:

• WAEC 2008

A hydrocarbon containing 88.9% carbon has the empirical formula [H = 1 C = 12]

A. CH
B. CH₂
C. C₂H₃
D. C₂H₅