Chemistry 2020 Waec Past Questions and Answers

Question 21 :

• WAEC 2020

The type of isomerism exhibited by cis and trans isomers is?

A. Positional
B. Geometrical
C. Functional
D. Optical

Question 22 :

• WAEC 2020

Which of the following compounds has the lowest boiling point?

A. C\(_4\)H\(_10\)
B. CH\(_3\)COOH
C. H\(_2\)O
D. C\(_2\)H\(_5\)OH

Question 23 :

• WAEC 2020

An alkanol containing 60% carbon by mass would have a molecular formula [H=1.0. C-12.0, O= 16.0]

A. CH\(_3\)OH
B. C\(_2\)H\(_5\)OH
C. C\(_3\)H\(_7\)OH
D. C\(_4\)H\(_9\)OH

Question 24 :

• WAEC 2020

Which of the following compounds would release hydrogen when reacted with sodium metal?
I. CH\(_3\)COOH
II. CH\(_3\)CH\(_2\)OH
III. CH\(_3\)COOCH\(_3\)

A. I only
B. I and II only
C. Il and IIl only
D. I and Ill only

Question 25 :

• WAEC 2020

Which of the following substances is not a reducing agent?

A. C
B. CO
C. O\(_2\)
D. H\(_2\)