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English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 20 above, choose the best option from letters A-D that best completes the gap.
A
interest
B
awareness
C
view
D
service
medium Difficulty
Verified Correct Answer: Option D
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #15431)
English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 21 above, choose the best option from letters A-D that best completes the gap.
A
distribution
B
competition
C
consumption
D
production
medium Difficulty
Verified Correct Answer: Option B
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #15433)
English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 22 above, choose the best option from letters A-D that best completes the gap.
A
respect
B
dignity
C
loyalty
D
obedience
medium Difficulty
Verified Correct Answer: Option C
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #15435)
English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 23 above, choose the best option from letters A-D that best completes the gap.
A
tangible
B
rowdy
C
sensitive
D
desirable
medium Difficulty
Verified Correct Answer: Option D
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #15436)
English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 24 above, choose the best option from letters A-D that best completes the gap.
A
prior
B
full
C
biased
D
simple
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #15437)
English Language
UTME / JAMB 2009
Lexis, Structure & Register (Cloze & Vocabulary)
In question number 25 above, choose the best option from letters A-D that best completes the gap.
A
analyze
B
present
C
organize
D
discuss
medium Difficulty
Verified Correct Answer: Option A
Grammar & Contextual Explanation
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #15438)
Physics
UTME / JAMB 2009
Waves, Sound & Vibrations
Solution
A progressive wave is represented by \( y = 10 \text{Sin} (1000\pi t - \frac{\pi x}{34}) \) . two layers of the wave separated by 153cm have a phase difference of?
A
2700
B
450
C
900
D
1800
E
No Correct Option
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Comparing \( y = 10 \text{Sin} (1000\pi t - \frac{\pi x}{34}) \) with y = A sin (\omegat - ϕ)
where ϕ = \(\frac{2\pi x}{\lambda}\)
comparing: \(\frac{2\pi x}{\lambda}\) = \( \frac{\pi x}{34}\)
\lambda = 34 \(\times\) 2 = 68
: ϕ = \(\frac{2\pi x}{\lambda}\) = \(\frac{2\pi \times 153}{68}\)
ϕ = 4.5\(\pi\) rad = 810^\circ or 90^\circ
since sin 810^\circ or 90^\circ = 1
Source: Myschool Past Questions Archive (Record #41400)
Chemistry
UTME / JAMB 2009
Electrolysis & Electrochemical Cells
Solution
Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays?
A
are positively charged
B
are negatively charged
C
have mass
D
travel in straight lines
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Cathode rays travel in a straight line and can cast sharp shadows.
Cathode rays are negatively charged.
Electric field and magnetic field deflect cathode rays.
Source: Myschool Past Questions Archive (Record #4297)
Chemistry
UTME / JAMB 2009
Stoichiometry, Mole Concept & Volumetric Analysis
If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm3 of distilled water at 18oC, the solubility of the solute in mol dm-3 is
[Pb = 207, N = 14, O = 16]
A
1.60
B
5.25
C
16.00
D
525.00
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #4307)
Chemistry
UTME / JAMB 2009
Water, Solutions & Solubility
For a given solute, the concentration of its saturated solution in different solvents are
A
the same at the same temperature
B
different at the same temperature
C
the same at different temperature
D
constant
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #4308)
Chemistry
UTME / JAMB 2009
Non-Metals & Their Compounds
Solution
The major source of oxides of nitrogen is from the burning of
A
coal
B
wood
C
fuel
D
chlrofluorocarbons
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
Nitrogen oxides form when fuel is burned at high temperatures
Source: Myschool Past Questions Archive (Record #4309)
Chemistry
UTME / JAMB 2009
Stoichiometry, Mole Concept & Volumetric Analysis
What volume of 1.5M solution of KOH would contain 0.045 moles
A
67.50 cm3
B
30.00 cm3
C
6.75 cm3
D
3.00 cm3
medium Difficulty
Verified Correct Answer: Option B
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #4312)
Chemistry
UTME / JAMB 2009
Chemical Energetics & Thermochemistry
The equilibrium of an endothermic reaction which proceeds with an increase in volume can be shifted in the reverse direction by
A
increasing the temperature and decreasing the pressure
B
increasing the pressure and increasing the temperature
C
decreasing the temperature and increasing the pressure
D
decreasing the pressure and decreasing the temperature
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #4326)
Chemistry
UTME / JAMB 2009
Electrolysis & Electrochemical Cells
What current will deposit 3.25g of zinc in 2hrs?
[Zn = 65, F = 96500 mol-]
A
3.25A
B
2.00A
C
1.34A
D
0.67A
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #4320)
Chemistry
UTME / JAMB 2009
Reaction Rates & Chemical Equilibrium
Diagram
Solution
In the diagram above, which of the curves represents the evolution of oxygen with time in the equation 2KClO3(s) → 2KCl(s) + 3O2(g)?
Attached Figure / Diagram
A
X
B
Y
C
Z
D
R
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
The curve that represents the evolution of oxygen over time for the reaction 2KClO\(_3\)(s) → 2KCl(s)+3O\(_2\)\(_g\) would start at a concentration of zero and then increase, with the rate of increase slowing down over time until it reaches a constant, maximum value.
At the beginning of the reaction (t=0), no oxygen has been produced. As the reaction proceeds, the amount of oxygen gas increases. The reaction rate is fastest at the start when the concentration of the reactant,KClO\(_3\), is highest. As the reactant is consumed, the rate of the reaction slows down, which is reflected in the curve's slope becoming less steep. Once all of the KClO\(_3\) has reacted, the amount of oxygen produced will no longer increase, and the curve will flatten out.
Source: Myschool Past Questions Archive (Record #4323)