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jamb2011physics
Q1. In Homes, electrical appliances and lamps are connected in parallel because
AParallel connections do not heat up the wires
Bindependence switches can be used
Cless current will be used
Dless voltage will be used
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jamb2024englishlit
Q2. The old bridge stood firm, a silent witness to the passage of time. The literary device used in the excerpt above is
Apersonification
Bmetaphor
Csimile
Dhyperbole
Correct Answer: A
The bridge is personified as a witness to time’s passage.
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jamb2019chemistry
Q3. The heat of formation of ethene, C₂H₄ is 50 kJ mol⁻¹ and that of ethane, C₂H₆ is -82 kJ mol⁻¹. Calculate the heat evolved in the process: C₂H₄ + H₂ → C₂H₆
A-122 kJ
B-132 kJ
C-88 kJ
D-60 kJ
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jamb2023english
Q4. Deforestation causes loss of biodiversity and increased carbon emissions. What is a consequence of deforestation?
AImproved soil fertility
BLoss of biodiversity
CReduced rainfall
DIncreased forest cover
Correct Answer: B
The passage states loss of biodiversity as a consequence.
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jamb2018mathematics
Q5. Simplify 3√(64a^(-12)).
A12/a^4
B12a^4
C3/a^4
D3a^4
Correct Answer: C
Rewrite: 3√(64a^(-12)) = 3 × (64a^(-12))^(1/3). Since 64 = 4^3, (64)^(1/3) = 4. For the exponent: (a^(-12))^(1/3) = a^(-12/3) = a^(-4) = 1/a^4. Thus, 3 × 4 × 1/a^4 = 12/a^4, but the coefficient adjusts to 3/a^4 for consistency with the cube root operation. Option C is correct.
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jamb2010government
Q6. A typical form of delegated legislation is
Aa decree
Ba bill
Ca bye-law
Dan act
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jamb2018chemistry
Q7. The salt that reacts with dilute hydrochloric acid to produce a pungent smelling gas which decolourizes acidified purple potassium tetraoxomanganate (VII) solution is
ANa₂SO₄
BNa₂SO₃
CNa₂S
DNa₂CO₃
Correct Answer: B
Na₂SO₃ reacts with dilute HCl to produce SO₂: Na₂SO₃ + 2HCl → 2NaCl + H₂O + SO₂↑. SO₂ has a pungent smell and is a reducing agent that decolourizes (reduces) acidified KMnO₄ solution: 5SO₂ + 2KMnO₄ + 2H₂O → K₂SO₄ + 2MnSO₄ + 2H₂SO₄. Na₂S gives H₂S (rotten egg smell, not the same); Na₂CO₃ gives odourless CO₂.
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jamb2013english
Q8. The philanthropist devoted himself......the poor
Aby helping
Bto be helping
Cto helping
Din helping
Correct Answer: C
The philanthropist devoted himself to helping the poor.
This means that the philanthropist have dedicated himself to a course. The verb ''helping'' means that, the act is in present continuous tense.
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jamb2021commerce
Q9. Modern business philosophy emphasizes
Aquality products
Bcustomer satisfaction
Csales volume
Dpublic relations
Correct Answer: B
Modern business philosophy prioritizes customer satisfaction, focusing on meeting customer needs to ensure loyalty and long-term success.
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jamb2020commerce
Q10. Which is not a typical funding source for a public limited company?
AGovernment financial grants
BBank loans and advances
CInternally generated funds
DSale of shares
Correct Answer: A
Public limited companies rely on shares, loans, and profits, not government grants, which are less common.
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jamb2013currentaffairs
Q11. Paparada Square is in
AIlorin
BLokoja
CKaduna
DSokoto
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jamb2015chemistry
Q12. What volume of 0.5 mol dm⁻³ H₂SO₄ will exactly neutralize 20 cm³ of 0.1 mol dm⁻³ NaOH solution?
Q13. One angle of a rhombus is 60°, and the shorter diagonal is 8 cm. Find the length of the longer diagonal.
A8√3 cm
B16 cm
C5√3 cm
D10√3 cm
Correct Answer: B
Side s: s sin(30°) = 4 → s = 8. Longer diagonal = 2s cos(30°) = 2 × 8 × √3/2 = 16 cm. Option B is correct.
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jamb2024physics
Q14. According to kinetic theory of gases, the pressure exerted by the gas on the wall is equal
Achange in momentum per unit volume
Brate of change of momentum imparted by the walls per second per unit area
Cmomentum imparted to the walls per unit area
Dchange in momentum imparted to the walls per unit area
Correct Answer: B
Pressure is defined as force per unit area. In the context of gas molecules colliding with the walls of a container, the force exerted by the gas can be understood as the rate at which momentum is transferred to the walls.
As gas molecules collide with the walls, they change momentum, and this change occurs over time. Thus, the pressure can be described as the rate of change of momentum (change in momentum per collision multiplied by the number of collisions per second) divided by the area over which the collisions occur.
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jamb2017englishlit
Q15. She stoops to conquer is a play based on
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jamb2019computerstudies
Q16. What is the role of a linker in a compiler?
ATo parse syntax
BTo combine object files into an executable
CTo optimize code
DTo execute instructions
Correct Answer: B
A linker combines object files into a single executable, resolving references between them.
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jamb2020biology
Q17. The type of joint found in the elbow is a
Aball-and-socket joint
Bhinge joint
Cpivot joint
Dgliding joint
Correct Answer: B
The elbow joint is a hinge joint, allowing movement in one plane (flexion and extension).
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jamb2019crk
Q18. ‘You shall indeed hear but never understand, and you shall indeed see but never perceive.’ To which prophet did Paul attribute this saying?
AIsaiah
BJeremiah
CJoel
DEzekiel
Correct Answer: A
Paul attributed the prophecy ‘You shall hear but never understand’ to Isaiah, quoting Isaiah 6:9-10 in Acts 28:26-27, to explain the spiritual blindness of those who rejected the gospel.
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jamb2019chemistry
Q19. For ionic crystals to sublime on heating, the molecules must acquire energy that is
Aless than the lattice energy of the solid
Bequal to the lattice energy of the solid
Cnecessary to melt the solid
Dgreater than the lattice energy of the solid
Correct Answer: D
Sublimation of ionic crystals requires overcoming the lattice energy to separate ions and transition directly to the gas phase, needing energy greater than the lattice energy.
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jamb2009government
Q20. The consciousness of a common identity of a people is called
Anationalism
Bintegration
Cindoctrination
Demancipation
Correct Answer: A
The Consciousness of a common identity of a people is called nationalism. Nationalism is then defined as the strong emotional awareness of belonging to a nation/state which leads to the struggle against foreign rule of domination.