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Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
Which of the following properties is not peculiar to matter?
A
Kinetic energy of particles increases from solid to gas
B
Random motion of particles increases from gas to solid
C
Orderliness of particles increases from gas to liquid
D
Random motion of particles increases from liquid to gas
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 #44533)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
Cast iron is used in making
A
Chains and agricultural implements
B
Iron sheets and retort stand
C
Nails and iron rods
D
Stoves and cookers
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 #44534)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
Solution
Which of the following compounds is used as a gaseous fuel?
A
CH3 -CH2 -CHO2 -COOH
B
CH3 -C = CH
C
CH3 -CH2 -CH2 -CH3
D
CH2 -CH2 -CH3
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
C\(_4\)H\(_{10}\), which is butane, is a common and easily liquefied gaseous fuel, used in various applications like portable stoves, cigarette lighters, and as a fuel for cooking and camping.
Source: Myschool Past Questions Archive (Record #44535)
Chemistry
UTME / JAMB 2016
Acids, Bases, and Salts
The products formed when primary Alkanols are oxidized using acidified potassium tetraoxomanganate (VII) are what?
A
CH3CH2CHO and H2O
B
CH3CHO and CO2
C
CH3CH2COOH and H2
D
CH3COOH and CO2
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 #44538)
Chemistry
UTME / JAMB 2016
Stoichiometry & Mole Concept
Alkanols have the general molecular formula
A
CnH2n-2
B
CnH2n+1CHO
C
CnH2n-2OH
D
CnH2n+1OH
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 #44540)
Chemistry
UTME / JAMB 2016
Acids, Bases, and Salts
Solution
Which of the following is not an alkali?
A
Ca(OH)2
B
NH3
C
NaOH
D
Al(OH)3
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
Al(OH)3 is not generally an alkali but is amphoteric; acting as a base and an acid when the need arises.
Source: Myschool Past Questions Archive (Record #44543)
Chemistry
UTME / JAMB 2016
Atomic Structure and Periodic Table
Which of the following statements is correct about the periodic table?
A
Elements in the same group have the same number of electron shells
B
The non-metallic properties of the elements tend to decrease across each period
C
Elements in the same period have the same number of valence electrons
D
The valence electrons of the elements increase progressively across the period
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 #44545)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
The metal whose ore can be concentrated by passing it through a magnetic separator is
A
Zn
B
Sn
C
Cu
D
Ca
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 #44546)
Chemistry
UTME / JAMB 2016
Acids, Bases, and Salts
An example of an acidic oxide is
A
NO
B
CO
C
SO2
D
CuO
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 #44548)
Chemistry
UTME / JAMB 2016
Stoichiometry & Mole Concept
Solution
What volume of 0.5M H2SO4 will exactly neutralize 20cm3 of 0.1M NaOH Solution?
A
2.0cm 3
B
5.0cm 3
C
6.8cm 3
D
8.3cm 3
medium Difficulty
Verified Correct Answer: Option A
Chemical Principles & Mechanism
The balanced equation is given as:
\(H_{2}SO_{4} + 2NaOH \to Na_{2}SO_{4} + 2H_{2}O\)
Molarity of \(NaOH = 0.1M\)
Volume of \(NaOH = 20cm^{3}\)
Molarity of \(H_{2}SO_{4} = 0.5M\)
mol NaOH = \(0.1 \times 20cm^{3} = 2molNaOH\)
⇒ \(2mol NaOH \times \frac{1mol H_{2}SO_{4}}{2mol NaOH} = 1 mol H_{2}SO_{4}\)
\(volume of H_{2}SO_{4} = \frac{mole of H_{2}SO_{4}}{molarity of H_{2}SO_{4}}\)
= \(\frac{1 mole}{0.5 M} = 2cm^{3} H_{2}SO_{4}\)
Source: Myschool Past Questions Archive (Record #44550)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
Diamond cannot be used
A
In making bicycle chains
B
As abrasives
C
In cutting glass and metals
D
As dies for drawing wires
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 #44552)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
Ethanol is soluble in water due to the presence of a
A
Carbonyl group
B
Hydroxyl group
C
Phenyl group
D
Methyl group
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 #44555)
Chemistry
UTME / JAMB 2016
Atomic Structure and Periodic Table
Solution
The number of electronic shells contained in an atom with electron configuration 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^6\)4S\(^2\) is
A
3
B
2
C
4
D
5
medium Difficulty
Verified Correct Answer: Option C
Chemical Principles & Mechanism
To determine the number of electronic shell, first, you need to add up the electrons (the numbers at the superscript or power).
1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^6\)4S\(^2\) → 2 + 2 + 6 + 2 + 6 + 2 = 20
Now we can represent the element with the atomic number 20 is shells i.e 2,8,8,2
This means first shell is 2, second shell is 8, third shell is 8, and the fourth shell is 2 = In total, there are 4 electron shells.
Source: Myschool Past Questions Archive (Record #44557)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
The drying agent suitable for drying ammonia is
A
Calcium Chloride
B
Calcium Oxide
C
Phosphorus(V) Oxide
D
Concentrated H2SO4
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 #44605)
Chemistry
UTME / JAMB 2016
Matter & Separation Techniques
The arrangement of particles in crystal lattices can be studied using
A
X-rays
B
\(\beta\)-rays
C
\(\alpha\)-rays
D
\(\gamma\)-rays
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 #44606)