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Physics
UTME / JAMB 2014
Atomic, Quantum, Nuclear Physics & Electronics
Which gas produces a red coloured light in a discharge tube?
A
Mercury
B
Argon
C
Air
D
Neon
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #26991)
Physics
UTME / JAMB 2014
Units, Measurements & Dimensional Analysis
Which of the following is NOT a Fundamental S.I unit?
A
Metre
B
Ampere
C
Newton
D
Second
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #26992)
Physics
UTME / JAMB 2014
Atomic, Quantum, Nuclear Physics & Electronics
When \(^{210}_{82}Pb\) decays to \(^{206}_{80}Pb\), it emits
A
two alpha and two beta particles
B
an alpha particle
C
one beta particle
D
one alpha and one beta particle
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #26993)
Physics
UTME / JAMB 2014
Current Electricity & Electric Circuits
What type of reaction is represented by the equation \(^{2}_{1}X+^{2}_{1}X\rightarrow^{3}_{2}Y+^{1}_{0}n+Energy\)
A
Ionization
B
Fusion
C
Fission
D
Chain
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #26994)
Physics
UTME / JAMB 2014
Temperature, Thermometry & Thermal Expansion
Solution
A glass bottle of initial volume 2 x 10\(^4\) cm\(^3\) is heated from 20ºC to 50ºC. If the linear expansivity of glass is 9 x 10\(^{-6}\)K\(^{-1}\), the volume of the bottle at 50ºC is
A
20016.2cm3
B
20005.4cm3
C
20008.1cm3
D
20013.5cm3
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
\(\gamma = \frac{V_2 - V_1}{V(\theta)}\)
\(3(9 \times 10^4) = \frac{V_2 - 2 \times 10^4}{2 \times 10^4(30)}\)
V\(_2\) - 2 x 10\(^4\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\))
V\(_2\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\)) + 2 x 10\(^4\)
V\(_2\) = 16.2 + 2 x 10\(^4\)
V\(_2\) = 20016.2cm3
Source: Myschool Past Questions Archive (Record #26995)
Physics
UTME / JAMB 2014
Temperature, Thermometry & Thermal Expansion
Solution
A glass bottle of initial volume 2 x 10\(^4\) cm\(^3\) is heated from 20ºC to 50ºC. If the linear expansivity of glass is 9 x 10\(^{-6}\)K\(^{-1}\), the volume of the bottle at 50ºC is
A
20016.2cm3
B
20005.4cm3
C
20008.1cm3
D
20013.5cm3
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
\(\gamma = \frac{V_2 - V_1}{V(\theta)}\)
\(3(9 \times 10^4) = \frac{V_2 - 2 \times 10^4}{2 \times 10^4(30)}\)
V\(_2\) - 2 x 10\(^4\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\))
V\(_2\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\)) + 2 x 10\(^4\)
V\(_2\) = 16.2 + 2 x 10\(^4\)
V\(_2\) = 20016.2cm3
Source: Official Exam / Past Question Archive
Chemistry
UTME / JAMB 2014
Stoichiometry, Mole Concept & Volumetric Analysis
A mixture is different from a compound because
A
the properties of a compound are those of its individual constituents while those of a mixture differ from its constituents
B
a mixture is always homogeneous while a compound is not
C
the constituent of a compound are chemically bound together while those of a mixture are not
D
a mixture can be represented by a chemical formula while a compound cannot
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 #30675)
Chemistry
UTME / JAMB 2014
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
What is the percentage of sulphur in sulphur (IV) oxide?
A
66%
B
25%
C
40%
D
50%
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
molar mass of SO 2=64 :.%S=32/64 x 100 = 50%
Source: Myschool Past Questions Archive (Record #30676)
Chemistry
UTME / JAMB 2014
Particulate Nature of Matter, Laws & Formulae
Solution
A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the relative molecular mass of Y.
A
128
B
8
C
16
D
64
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
\(\frac{RY}{RX}\) = \(\frac{\sqrt{My}}{\sqrt{My}}\) 1/2 = \(\frac{\sqrt{32}}{\sqrt{y}}\) \(\frac{32}{y}\) = 1/4
Y = \(\frac{32x4}{1}\) = 128
Source: Myschool Past Questions Archive (Record #30677)
Chemistry
UTME / JAMB 2014
Stoichiometry, Mole Concept & Volumetric Analysis
Solution
200 cm3 of a gas at 25ºC exerts a pressure of 700 mmHg. Calculate its pressure if its volume increase 350 cm3 at 75ºC.
A
342.53 mmHg
B
1430.54 mmHg
C
467.11 mmHg
D
400.00 mmHg
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
\(\frac{p1V 1}{T1}\) = \(\frac{P2V2}{T2}\) \(\frac{700x200}{298}\) = \(\frac{P2X 350}{348}\) P2 = \(\frac{700x200x348}{298x350}\) = 467.11mmHg
Source: Myschool Past Questions Archive (Record #30678)
Chemistry
UTME / JAMB 2014
Atomic Structure, Orbitals & Nuclear Chemistry
An element X has electron configuration 1s2 2s2 2p6 3s2 3p5. Which of the following statements is correct about the element?
A
lt has a completely filled p-orbital
B
lt has 5 electrons in its outermost shell.
C
lt belongs to group ll on the periodic table
D
lt is a halogen
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #30680)
Chemistry
UTME / JAMB 2014
Periodic Table & Periodicity
If the difference in electronegativity of elements P and Q is 3.0. The bond that will be formed between them is
A
metallic
B
covalent
C
co-ordinate
D
ionic
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #30683)
Chemistry
UTME / JAMB 2014
Atomic Structure, Orbitals & Nuclear Chemistry
How many protons, neutrons and electrons respectively are present in the element 60/27 Co?
A
27, 33 and 33
B
33, 27 and 27
C
27, 33, and 27
D
60, 33 and 60
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 #30688)
Chemistry
UTME / JAMB 2014
Stoichiometry, Mole Concept & Volumetric Analysis
The radio active radiation used in studying the arrangement of particles in giant organic molecules is
A
\(\gamma\)- rays
B
\(\alpha\)- particles
C
X-rays
D
\(\beta\) - particles
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 #30689)
Chemistry
UTME / JAMB 2014
Particulate Nature of Matter, Laws & Formulae
Solution
A silicon -containing ore has 92% 28Si, 5% 29Si and 3% 30Si. Calculate the relative atomic mass of the silicon.
A
14.00
B
29.00
C
28.11
D
28.00
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
(\(\frac{92}{100}\) x 28) + (\(\frac{5}{100}\) x 29) + (\(\frac{3}{100}\) x 30) = 28.11
Source: Myschool Past Questions Archive (Record #30690)