2024 WAEC (WASSCE) Chemistry Past Questions

When naphthalene on heating changes from the solid state directly to the gaseous state it undergoes

1. A.evaporation✓ Correct
2. B.sublimation
3. C.decomposition
4. D.combustion
5. E.ionisation

After the following sentence, a list of possible interpretations is given. Choose the interpretation that is most appropriate for the sentence.  Don't tell me another cock and bull story. This means that the speaker does not want to.

1. A.be further baffled
2. B.hear the same old story
3. C.hear another drab story
4. D.be further deceived✓ Correct

After each of the following sentences, a list of possible interpretations is given. Choose the interpretation that is most appropriate for each sentence. Your daughter will do very well in school. She has a good head on her shoulders. This means that she

1. A.thinks fast✓ Correct
2. B.is sensible
3. C.is very beautiful
4. D.is well behaved and dilligent

Äjótàpá ni a máa ń jó

1. A.A. gángan
2. B.B. kęríkeri✓ Correct
3. C.C. bènhbé
4. D.D. bàtá

When a solid melts and consequently boils, there is

1. A.a gradual increase in the average kinetic energy of the particles
2. B.a sudden decrease in the kinetic energy of the particles
3. C.no change in the average kinetic energy of the particles✓ Correct
4. D.a rapid change in the nature of bonding of the components
5. E.a change in the size of the fundamental particles

The total possible combinations of the input variables for a logic gate containing three input variables is

1. A.A. 3
2. B.B. 4
3. C.C. 8✓ Correct
4. D.D. 12

The study of economics IS Important to every society because it______

1. A.Enables individuals to satisfy all their wants
2. B.Helps in the utilization of scarce resources.
3. C.Helps producers to know what to produce.✓ Correct
4. D.Restores equilibrium between producers and consumers

Which of the following is not a conductor of electricity?

1. A.Human body✓ Correct
2. B.Glass
3. C.Silver
4. D.Earth
5. E.Copper

Instruction: Choose the word opposite in meaning to the underlined words.Answer all the questions. Most people thought the accused would be convicted but surprisingly he was.....

1. A.acquitted
2. B.released
3. C.sentenced
4. D.jailed✓ Correct
5. E.pardoned

A solid material of volume 100$cm^{-3}$ is heated through a temperature difference of 40°C. Calculate the increase in the volume of the material if its linear expansitivity is 2 x $10^{-6}K{-1}$

1. A.2.4 x$10^{-2}cm^{-3}$✓ Correct
2. B.1.6 x$10^{-2}cm^{-3}$
3. C.8 x$10^{-2}cm^{-3}$
4. D.5 x$10^{-2}cm^{-3}$
5. E.4 x$10^{-2}cm^{-3}$