Waec Chemistry 2019 Past Questions and Answers

Question 1:

• WAEC 2019

The periodic table is an arrangement of elements according to their?

A. Oxidation number
B. Atomic number
C. Mass number
D. Nunber of neutrons

Question 2:

• WAEC 2019

The periodic table is an arrangement of elements according to their?

A. Oxidation number
B. Atomic number
C. Mass number
D. Nunber of neutrons

Question 3:

• WAEC 2019

A solid with higher melting and boiling points is likely to be?

A. Covalent compound
B. A Dative compound
C. An Electrovalent compound
D. A Non-metal

Question 4:

• WAEC 2019

Which of the following metals reacts slowly with cold water?

A. Iron
B. Silver
C. Calcium
D. Pottassium

Question 5:

• WAEC 2019

which of the following elements has the highest ionization energy?

A. Calcium
B. Chlorine
C. Flourine
D. Magnesium