Waec Chemistry 2016 Past Questions and Answers

Question 1:

• WAEC 2016

The following atoms of carbon ¹²₆C, ¹³₆C and ¹⁴₆C can be described as?

A. Allotropes
B. Isomers
C. Isotopes
D. Isotones

Question 2:

• WAEC 2016

The following atoms of carbon ¹²₆C, ¹³₆C and ¹⁴₆C can be described as?

A. Allotropes
B. Isomers
C. Isotopes
D. Isotones

Question 3:

• WAEC 2016

An atom X consist of 6 protons, 6 electrons and 7 neutrons. Which of the following representations of the atom is correct?

A. ¹³₆X
B. ¹³₇X
C. ¹⁹₆X
D. ¹⁹₇X

Question 4:

• WAEC 2016

How many electron are present in 94Be2+?

A. 2
B. 4
C. 5
D. 6

Question 5:

• WAEC 2016

When element \(_{20}\)Y combines with element \(_8\)Z, it forms

A. A covalent compound , YZ is formed
B. A covalent compound, ZY is formed
C. An ionic compound, YZ is formed
D. An ionic compound, ZY is formed