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2,483 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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2,483 questions

Question 1 of 20 2,483 total questions

Question 601

jamb 2006

If the relative density of gold is 19.2, the volume of 2.4kg of gold is?

A8.00 x 10^-3 m³

B1.25 x 10^-4 m³

C1.92 x 10^-4 m³

D4.61 x 10^-3 m³

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Question 602

jamb 2006

At low humidity in an environment, the human skin is usually?

Adamp and rough

Bdamp and smooth

Cdry and rough

Ddry and smooth

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Question 603

jamb 2006

A uniform solid cube material 10cm on each side of mass 700g is submerged in water. which of the following best described the behavior of the cube water?

Athe cube will melt after a period of time

Bthe cube will float

Cthe cube will sink in water

Dthe cube will rest at an equilibrium position in water

View Explanation & Discuss

Question 604

jamb 2005

A motorcyclist traveling at 30ms\(^{-1}\) starts to apply his brakes when he is 50m from the traffic light that had just turned red. If he reached the traffic light, his decceleration is

A18 ms\(^{-2}\)

B10 ms\(^{-2}\)

C9 ms\(^{-2}\)

D5 ms\(^{-2}\)

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Question 605

jamb 2005

The amount of energy released when 0.5kg of uranium is burnt completely is [c = 3 x 10\(^8\)m/s]

A1.5 x 10\(^8\)J

B4.5 x 10\(^8\)J

C1.5 x 10\(^{16}\)J

D4.5 x 10\(^{16}\)J

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Question 606

jamb 2005

In the photoelectric effect, which of the following graphs correctly represents the graph of stopping potential Vo against frequency,f, of incident light?

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Question 607

jamb 2005

An elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is

A12cm

B20cm

C18cm

D15cm

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Question 608

jamb 2005

If two inductors of inductances 3H and 6H are arranged in series, the total inductance is

A9.0H

B18.0H

C0.5H

D2.0H

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Question 609

jamb 2005

A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is

A400N

B200N

C100N

D800N

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Question 610

jamb 2005

The velocity of sound in air will be doubled if it's absolute temperature is

AQuadrupled

BConstant

CHalved

DDoulbed

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Question 611

jamb 2005

If the distance between two point charges its increased by a factor of four, the magnitude of the electrostatic force between them will be

A¹/₄ of its former value

B¹/₁₆ of its former value

C¹/₂ of its former value

D4 times its former value

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Question 612

jamb 2005

The figure above shows three capacitors, 2μF, 3μF and 6μF connected in series. If the p.d across the system is 12V, the p.d, across the 6μF capacitor is

A4V

B12V

C2V

D6V

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Question 613

jamb 2005

10⁶J of heat is required to boil off completely 2kg of a certain liquid. Neglecting heat lost to the surroundings, the latent heat of vaporization of the liquid is

A2.0 x 10⁶J kg^-1

B5.0 x 10⁶J kg^-1

C2.0 x 10⁵J kg^-1

D5.0 x 10⁵J kg^-1

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Question 614

jamb 2005

Two liquids L₁ and L₂ are contained in a U - tube. The height and the density of L₁ are 8 cm and 10³ kgm^-3 respectively. If the density of L₂ is 800 kgm^-3, its height measured from the same level is

A8 cm

B10 cm

C16 cm

D12 cm

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Question 615

jamb 2005

\( ^{235} _{92}U + ^1 _0n → ^{144} _{56}Ba + ^{90} _{36}Kr +2X \)

In the reaction above, X is

Aelectron

Bproton

Cneutrino

Dneutron

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Question 616

jamb 2005

In the circuit diagram of a transistor above, the terminal P, Q and R represent

AEMITTER, BASE and COLLECTOR

BCOLLECTOR, EMITTER and BASE

CBASE, COLLECTOR and EMITTER

DBASE, ENITTER and COLLECTOR

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Question 617

jamb 2005

In the figure above, the work done by the force of 100N inclined at an angle of 60^o to the object dragged horizontally to a distance of 8m is

A800J

B600J

C100J

D400J

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Question 618

jamb 2005

If the system above is in equilibrium, the tension in the string Q is

A11N

B9N

C4N

D6N

View Explanation & Discuss

Question 619

jamb 2005

In the figure above, the coefficient of static friction is 0.5. If the tension in the string is T, the acceleration of the system in motion is

A5 ms^-2

B15 ms^-2

C3 ms^-2

D9 ms^-2

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Question 620

jamb 2005

The value of F in the figure above when in equilibrium is

A10N

B12N

C20N

D27N

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