Waec Chemistry 2013 Past Questions and Answers

Question 16:

• WAEC 2013

The bonds in crystalline ammonium chloride are

A. Covalent and dative
B. Ionic and covalent
C. Ionic, covalent and dative
D. Ionic, covalent and hydrogen bond

Question 17:

• WAEC 2013

Which of the following elements is diatomic?

A. Sodium
B. Oxygen
C. Iron
D. Neon

Question 18:

• WAEC 2013

Noble gas molecules are held together by

A. Van der Waals forces
B. Hydrogen bonds
C. Dative bonds
D. Covalent bonds

Question 19:

• WAEC 2013

Which of the following statements about nuclear reaction is correct? The reaction

A. Involves neutrons only
B. Takes place inside the nucleus
C. Is governed by temperature and pressure
D. Involves protons and electrons only

Question 20:

• WAEC 2013

Consider the reaction represented by the following equation: C\(_2\)H\(_2\) + yH\(_2\) → C\(_2\)H\(_6\). The value of y in the reaction is

A. 4
B. 3
C. 2
D. 1