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4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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4,719 questions

Question 1 of 20 4,719 total questions

Question 1171

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 1172

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 1173

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 1174

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

View Explanation & Discuss

Question 1175

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 1176

jamb 2005

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

A11N

B9N

C4N

D6N

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Question 1177

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 1178

jamb 2005

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

A10N

B12N

C20N

D27N

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Question 1179

jamb 2005

The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is

A20^o

B18^o

C35^o

D25^o

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Question 1180

jamb 2005

The resistance of a piece of wire of length 20m has crossed-sectional area 8 x 10\(^{-6}\)m\(^2\)is?
[Resistivity of the wire = 4 x 10\(^{-7}\) Ω m]

A5.0 Ω

B0.5 Ω

C10.0 Ω

D1.0 Ω

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Question 1181

jamb 2005

Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge?

Athe charge must be of opposite sign

Bpositive charges are more in number

Cthe charges are electrically neutral

Dthe charges are of the same sign

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Question 1182

jamb 2005

The electric field intensity in a place where a charge of 10^-10c experiences a force of 0.4N is?

A4.0 x 10⁷ NC^-1

B8.0 x 10⁹ NC^-1

C8.O x 10^-12 NC^-1

D4.0 x 10⁹ NC^-1

View Explanation & Discuss

Question 1183

jamb 2005

A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full?

A10 hrs

B18 hrs

C20 hrs

D25 hrs

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Question 1184

jamb 2005

The north pole of a magnet can never be separated from the south pole because of the property knowledge as?

Amagnetic octopole

Bmagnetic monopole

Cmagnetic dipole

Dmagnetic quadrupole

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Question 1185

jamb 2005

An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is?

A9 A

B8 A

C6 A

D7 A

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Question 1186

jamb 2005

Satellite communication network makes use of?

Avisible light

Bsound wave

Cradio wave

Dinfra-red wave

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Question 1187

jamb 2005

When very hot water is poured into two identical thin and thick glass tumblers in equal volumes, the thick one cracks because?

Aof the even expansion of glass

Bglass is a crystal

Cglass is a good conductor of heat

Dof the uneven expansion of glass

View Explanation & Discuss

Question 1188

jamb 2005

I. Melting

II. Boiling

III. Refraction

IV. Conduction

Which combination of the above is evident of the molecular nature of matter?

AII , III and IV only

BI ,II and IV only

CI , III and IV only

DI , II and III only

View Explanation & Discuss

Question 1189

jamb 2005

The process whereby a liquid turns spontaneously into vapour is called?

Aregelation

Bsublimation

Cboiling

Devaporation

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Question 1190

jamb 2005

I. reproducibility

II. Sensibility

III. High thermal capacity

iv. High accuracy

The quantities of a good thermometer include?

AI, II and IV only

BI, III and IV only

CI, II and III only

DII, III and IV only

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