Sample WAEC-style Practice Questions (Original Content)

WAEC Style

Question 1

Which of the following elements has the highest first ionization energy?

Question 2

The type of bond formed between two non-metal atoms of different electronegativities is a:

Question 3

How many protons, neutrons, and electrons are in an atom of 23 Na 11?

Question 4

Which of the following is an intensive property of matter?

Question 5

The geometric shape of a methane (CH4) molecule is:

Question 6

Which of the following gases is used as a refrigerant?

Question 7

The empirical formula of a compound containing 40% Carbon, 6.7% Hydrogen, and 53.3% Oxygen is: (C=12, H=1, O=16)

Question 8

Which of the following salts is insoluble in water?

Question 9

The change of a gas to a liquid is called:

Question 10

What is the oxidation state of Manganese in KMnO4?

Question 11

A gas occupies 2.0 dm3 at 27 degrees Celsius. What is its volume at 127 degrees Celsius at constant pressure?

Question 12

Which of the following is the chief ore of Iron?

Question 13

Which of the following is a greenhouse gas?

Question 14

The process of breaking down large hydrocarbon molecules into smaller ones is:

Question 15

In the reaction: H2 + Cl2 -> 2HCl, which substance is oxidized?

Question 16

The general formula for the Alkyne series is:

Question 17

Which of the following solutions will turn blue litmus paper red?

Question 18

The bond formed between a metal and a non-metal is usually:

Question 19

How many electrons are shared in a double covalent bond?

Question 20

Which of the following is a neutralization reaction?

Question 21

What is the IUPAC name for CH3CH2CH2OH?

Question 22

The process by which vegetable oil is converted to margarine is:

Question 23

Which of the following is the most reactive metal?

Question 24

The formula for the trioxonitrate (V) acid is:

Question 25

Which of the following is a member of the transition metal series?

Question 26

Anhydrous Calcium Chloride is used as a:

Question 27

Which of the following isotopes is used in dating archaeological artifacts?

Question 28

What is the percentage by mass of Oxygen in Water (H2O)? (H=1, O=16)

Question 29

The ability of an atom to attract electrons to itself in a chemical bond is:

Question 30

The substance used to test for the presence of Glucose in a lab is:

Question 31

Which of the following allotropes of Carbon is a good conductor of electricity?

Question 32

The volume of 0.1 mol/dm3 HCl required to neutralize 25 cm3 of 0.2 mol/dm3 NaOH is:

Question 33

Which gas is produced at the anode during the electrolysis of acidified water?

Question 34

The functional group for organic acids is:

Question 35

Compounds with the same molecular formula but different structural formulas are called:

Question 36

Which of the following is a natural polymer?

Question 37

The gas that turns acidified Potassium Tetraoxomanganate (VII) from purple to colorless is:

Question 38

What is the solubility of a salt if 5g dissolves in 20g of water at 25 degrees Celsius? (g/100g water)

Question 39

The process of soap making is called:

Question 40

Which of the following is an amphoteric oxide?

Question 41

The acid present in sour milk is:

Question 42

Temporary hardness in water can be removed by:

Question 43

The product formed when ethene reacts with bromine water is:

Question 44

Which of the following is a vector quantity in chemistry?

Question 45

The salt obtained from the reaction between aqueous ammonia and sulfuric acid is:

Question 46

Which of the following methods is used to separate a mixture of oil and water?

Question 47

According to the Kinetic Theory, the pressure of a gas is caused by:

Question 48

The monomer used to make PVC is:

Question 49

Which of the following is a use of Chlorine?

Question 50

The noble gas used in incandescent light bulbs to prevent the filament from burning out is:

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