UTME Past Questions
Chemistry · 2020
40 questions
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/ 40
Question 01
Fats and oils are classified as?
A
Hydrocarbonate
B
Alkanoates
C
Alkanils
D
Carbohydrates
Question 02
Ethyne undergoes the following reactions except?
A
Esterification
B
Substitution
C
Addition
D
Polymerization
Question 03
Which of the following sets of elements is arranged in increasing order of first ionization energies?
A
Na, Li, K, Rb
B
Rb, K, Li, Na
C
Li, K, Na, Rb
D
Rb, K, Na, Li
Question 04
If 120cm
3
of distilled water is added to 180cm
3
of 0.50moldm
-3
sodium hydroxide solution, the new concentration is?
A
0.4 moldm
-3
B
0.3 moldm
-3
C
0.2 moldm
-3
D
0.1 moldm
-3
Question 05
A transition metal would be expected to
A
Form oxides with different formulae
B
Have an atomic structure with an incomplete outermost shell
C
Have oxidizing ability
D
Have low density
Question 06
What is the IUPAC name of KMnO4?
A
Potassium permanganate
B
Potassium tetraoxomanganate
C
Potassium tetraoxomanganate (VII)
D
Potassium tetraoxomanganate (IV)
Question 07
Which of the following is a heavy chemical?
A
Drugs
B
Dyes
C
H
2
SO
4
D
AgNO
3
Question 08
Which of the following are ores of iron? i. Haematite ii. Bauxite iii. Magnetite iv. Cassiterite
A
i & ii
B
i, ii, iii, & iv
C
i & iii
D
i, ii & iii
Question 09
Water molecules are held together by
A
Covalent bond
B
Ionic bond
C
Hydrogen bond
D
Van der Waal forces
Question 10
Which of the following bleaches by oxidation?
A
H
2
S
B
SO
2
C
Cl
2
D
SO
Question 11
What volume of hydrogen gas is produced at s.t.p. when 6.5g of Zinc (Zn = 65) react with excess dilute sulphuric acid?
A
2.24dm
3
B
4.48dm
3
C
8.96dm
3
D
18dm
3
Question 12
Which of the following can be used to test for the presence of water in the laboratory?
A
Anhydrous calcium chloride
B
Anhydrous copper (II) tetraoxosulphate (VI)
C
Anhydrous potassium chloride
D
Anhydrous calcium oxide
Question 13
The method commonly used in the preparation of insoluble salts is?
A
Neutralization
B
Oxidation
C
Direct combination of constituent elements
D
Double decomposition
Question 14
Which of the following statements is/are true? (i) H
2
SO
4
is a strong electrolyte (ii) CH
3
COOH is a weak electrolyte (iii) Aluminum conducts electricity (iv) C
6
H
12
O
6
is a non-electrolyte
A
i & ii only
B
i, ii & iii
C
ii & iii
D
i, ii, iii & iv
Question 15
The earthly impurities in iron ore are removed in the blast furnace by reaction represented by the equation
A
C + CO
2
→ 2CO
B
Fe
2
O
3
+ 3CO → 2Fe + 3CO
2
C
CaO + SiO
2
→ 2Fe + 3CO
2
D
C + O
2
→ CO
2
Question 16
The following are miscible with water except
A
Ethylethanoate
B
Ethanol
C
Ethanoic acid
D
Methanol
Question 17
How many sigma bonds are there in a benzene ring?
A
3
B
15
C
12
D
2
Question 18
If 200cm
3
of a gas at s.t.p. has a mass of 0.268g, determine its molar mass
A
300gmol
-1
B
200gmol
-1
C
150gmol
-1
D
30gmol
-1
Question 19
The substance extensively used in manufacturing photographic chemicals is
A
Aluminum chloride
B
Zinc chloride
C
Silver chloride
D
Mercury chloride
Question 20
For a reaction to occur spontaneously
A
▲H must be negative
B
▲G must be negative
C
Entropy must increase
D
There must be a fall in temperature
Question 21
Which of the following decreases from left to right across the period but increases down the group in the periodic table?
A
Ionization energy
B
Electron affinity
C
Electronegativity
D
Atomic radius
Question 22
What is emitted during the disintegration of a barium nucleus as shown by the equation below:
A
Alpha particle
B
Beta particle
C
X-ray
D
Gamma ray
Question 23
Catalytic hydrogenation of oils results in the production of
A
Soaps
B
Detergents
C
Margarines
D
Alkanes
Question 24
Which of the following will produce nitrogen (IV) oxide and oxygen when strongly heated? i. NaNO3 ii. KNO3 iii. Mg(NO3)2 iv. Pb(NO3)2
A
i & ii
B
iii & iv
C
i, iii & iv
D
i, ii, iii & iv
Question 25
Which of the following molecules is linear?
A
CO
2
B
H
2
O
C
CH
4
D
NH
3
Question 26
Determine the molecular formula of a compound whose vapour density and empirical formula are 90 and CH2O respectively
A
C
4
H
8
O
2
B
C
12
H
22
O
11
C
C
6
H
12
O
6
D
C
2
H
10
O
5
Question 27
The following alloys contain copper except
A
Duralumin
B
Brass
C
Type metal
D
Bronze
Question 28
The products of the electrolysis of dilute sodium chloride solution with platinum electrodes are
A
Hydrogen and oxygen
B
Sodium and chloride
C
Sodium and oxygen
D
Hydrogen and chloride
Question 29
Which of the following properties is not characteristic of electrovalent compounds?
A
Formation of crystalline solids
B
Solubility in polar solvents
C
High vapour pressure
D
Ability to conduct electricity in aqueous solution
Question 30
A current of 4A was passed through copper (II) tetraoxosulphate (VI) solution for one hour. What mass of copper was deposited? [Cu = 64, IF = 96,500C]
A
3.2g
B
48g
C
4.8g
D
6.4g
Question 31
The maximum number of electrons that can be accommodated in the shell having the principal quantum number 3 is?
A
3
B
9
C
18
D
32
Question 32
Which of the following is thermally stable?
A
Ca(HCO
3
)
2
B
CaCO
3
C
ZnCO
3
D
K
2
CO
3
Question 33
“The rate of a reaction is proportional to the number of effective collisions occurring per second between the reactants”. This statement is associated with the
A
Kinetic theory
B
Rate law
C
Atomic theory
D
Collision theory
Question 34
The formula (CH
3
)
3
COH is that of a/an
A
Alkanoic acid
B
Primary alkanol
C
Secondary alkanol
D
Tertiary alkanol
Question 35
The energy required to remove the most loosely bound electron from a gaseous atom is known as the
A
Electron affinity
B
Ionization energy
C
Activation energy
D
Bond dissociation energy
Question 36
What is the molar mass of the alkyne with the formula C
x
H
14
? [H = 1, C = 12]
A
96g
B
86g
C
110g
D
92g
Question 37
The alkali metals exhibit similar chemical properties because
A
They have the same number of valence electrons
B
They form crystalline salts
C
They are highly reactive
D
Their salts are water soluble
Question 38
A given volume of methane diffuses in 20s. How long will it take the same volume of Sulphur (IV) oxide to diffuse under the same conditions?
A
5s
B
20s
C
40s
D
60s
Question 39
Helium is preferred to hydrogen in filling balloons because hydrogen is
A
Isotopic
B
Inflammable
C
Diatomic
D
A component of water
Question 40
Benzene produces more soot than ethane on burning because benzene
A
Has a higher degree of unsaturation
B
Has a higher molar mass
C
Is liquid at room temperature
D
Undergoes both substitution and addition reactions
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