2021 JAMB Commerce Past Questions

Temporary hard water is formed when rain water containing dissolved carbon(IV) oxide flows over deposits of

1. A.CaCO3
2. B.Na2CO3
3. C.Na2SO4
4. D.CaSO4✓ Correct

An ecological instrument used to measure wind direction is?

1. A.Secchi disc
2. B.wind vane
3. C.anemometer✓ Correct
4. D.slope gauge

The earliest form of life in animal kingdom is the

1. A.aves
2. B.amphibian
3. C.pisces✓ Correct
4. D.reptilia

Aliya is going to be what prefect in her school?

1. A.Head Girl
2. B.Health Prefect
3. C.Assembly Prefect✓ Correct
4. D.School Prefect

According to the novel, what delicacy is considered to be students' favourite?

1. A.Danwake✓ Correct
2. B.Snail
3. C.Spagetti
4. D.Indomie jollof

Integrate $\frac{2x^3 + 2x}{x}$ with respect to x

1. A.$\frac{2x^3}{3}$ - 2x + k✓ Correct
2. B.x3 + 2x + k
3. C.$\frac{2x^3}{3}$ + 2x + k
4. D.x3 - 2x + k

Choose the option nearest in meaning to the underlined. For all he cared: the game was as good as lost

1. A.He did not care if the game as lost✓ Correct
2. B.He could not care less if the game was lost
3. C.He was almost certain that the game would be lost
4. D.He was afraid the game would be lost

Which of the following controls the way in which the computer system functions and provides a means by which users can interact with the computer.

1. A.A. CPU
2. B.B. application software
3. C.C. operating system✓ Correct
4. D.D. ALU

_________ is formed when two corries cut back opposite sides of the same mountain, resulting in a knife-edged ridge

1. A.Cirque
2. B.Pyramidal Peak
3. C.Striation✓ Correct
4. D.Arete

The angular dispersion of a prism depends on

1. A.The index of refraction only✓ Correct
2. B.The angle of incidence as well as the index of refraction
3. C.The angle of incidence only
4. D.The thickness of the prism only