POST UTME FUTA 2021 Chemistry | Objective

Are you preparing for POST UTME FUTA exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 Chemistry (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
The reaction between potassium permanganate (KMnO4) and sodium oxalate (Na2C2O4) in acidic medium is a classic example of a redox reaction. The half-equation for the reduction of MnO4- is given by: MnO4- + 8H+ + 5e- → Mn2+ + 4H2O. What is the oxidation state of manganese in MnO4-?
A. +5
B. +6
Correct C. +7
D. +8

Correct Answer: C

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Question 2
The diagram below shows a setup for the electrolysis of water. What is the purpose of the platinum electrode?
A. To prevent the buildup of hydrogen gas
B. To prevent the buildup of oxygen gas
Correct C. To facilitate the flow of electrons
D. To prevent the electrolyte from drying out

Correct Answer: C

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Question 3
The element with atomic number 16 is in group 16 of the periodic table. What is the name of this element?
Correct A. Sulfur
B. Phosphorus
C. Chlorine
D. Argon

Correct Answer: A

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Question 4
The solubility of a subs\tance is defined as the maximum amount of the subs\tance that can dissolve in a given amount of solvent at a particular temperature. What is the unit of solubility?
A. g/L
Correct B. mol/L
C. g/mol
D. L/mol

Correct Answer: B

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Question 5
The reaction between nitrogen gas (N2) and hydrogen gas (H2) in the presence of a catalyst is a classic example of a non-metathesis reaction. What is the name of this reaction?
Correct A. Haber-Bosch process
B. Contact process
C. Fischer-Tropsch process
D. Ostwald process

Correct Answer: A

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Question 6
The reaction between chlorine gas and potassium iodide is represented by the equation: 2KI(s) + Cl2(g) → 2KCl(s) + I2(s). If 2.50 g of KI is reacted with 1.00 g of Cl2, what is the limiting reac\tant?
A. KI
Correct B. Cl2
C. KCl
D. I2

Correct Answer: B

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Question 7
A 2.50 M solution of HCl is titrated with 1.00 M NaOH. If 25.0 mL of NaOH is required to reach the equivalence point, what is the volume of HCl used?
Correct A. 10.0 mL
B. 20.0 mL
C. 25.0 mL
D. 50.0 mL

Correct Answer: A

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Question 8
A sample of a metal carbonate is heated to produce a gas. The gas is collected over water and found to have a partial pressure of 750 mmHg. If the temperature is 25°C, what is the mole \fraction of the gas?
A. 0.500
Correct B. 0.750
C. 0.875
D. 1.000

Correct Answer: B

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Question 9
A 1.00 M solution of FeCl3 is mixed with a 1.00 M solution of NaOH. If the resulting solution is 0.500 M in Fe(OH)3, what is the initial concentration of NaOH?
A. 0.500 M
Correct B. 1.00 M
C. 2.00 M
D. 5.00 M

Correct Answer: B

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Question 10
A 2.50 M solution of H2SO4 is titrated with 1.00 M NaOH. If 25.0 mL of NaOH is required to reach the equivalence point, what is the volume of H2SO4 used?
A. 10.0 mL
B. 20.0 mL
Correct C. 25.0 mL
D. 50.0 mL

Correct Answer: C

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Question 11
The reaction of nitrogen dioxide with water produces nitric acid and nitric oxide. Write the balanced chemical equation for this reaction.
Correct A. 2NO2 + H2O → HNO3 + NO
B. 2NO2 + H2O → HNO3 + NO2
C. NO2 + H2O → HNO3 + NO
D. NO2 + H2O → HNO3 + O2

Correct Answer: A

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Question 12
The solubility of a subs\tance is defined as the maximum amount of the subs\tance that can dissolve in a given amount of solvent at a particular temperature. What is the unit of solubility?
A. g/L
Correct B. mol/L
C. g/mol
D. mol/g

Correct Answer: B

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Question 13
The periodic table is arranged in a way that elements with similar properties are placed in the same group. What is the name of this group?
Correct A. Alkali Metals
B. Alkaline Earth Metals
C. Ha\logens
D. Noble Gases

Correct Answer: A

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Question 14
The process of electrolysis involves the passage of an electric current through a subs\tance to cause a chemical change. What is the type of electrolysis that occurs when a metal is dissolved in an electrolyte?
A. Electrolytic Oxidation
B. Electrolytic Reduction
C. Electrolytic Deposition
Correct D. Electrolytic Dissolution

Correct Answer: D

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Question 15
The concentration of a solution is defined as the amount of solute present in a given amount of solvent. What is the unit of concentration?
A. g/L
Correct B. mol/L
C. g/mol
D. mol/g

Correct Answer: B

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Question 16
A 0.1 M solution of NaCl is prepared by dissolving 2.5 g of NaCl in 100 mL of water. What is the molarity of the solution if 1.5 g of NaCl is added to the solution?
A. 0.15 M
Correct B. 0.2 M
C. 0.25 M
D. 0.3 M

Correct Answer: B

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Question 17
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. What is the s\tandard enthalpy of formation of CO(g)?
Correct A. -110.5 kJ/mol
B. -110.5 kJ/mol
C. -110.5 kJ/mol
D. -110.5 kJ/mol

Correct Answer: A

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Question 18
A 2.0 M solution of HCl is prepared by dissolving 40 g of HCl in 100 mL of water. What is the molarity of the solution if 20 g of HCl is added to the solution?
A. 2.5 M
Correct B. 3.0 M
C. 3.5 M
D. 4.0 M

Correct Answer: B

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Question 19
The s\tandard enthalpy of formation of H2O(l) is -285.8 kJ/mol. What is the s\tandard enthalpy of formation of H2(g)?
Correct A. 0 kJ/mol
B. 0 kJ/mol
C. 0 kJ/mol
D. 0 kJ/mol

Correct Answer: A

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Question 20
A 1.0 M solution of NaOH is prepared by dissolving 40 g of NaOH in 100 mL of water. What is the molarity of the solution if 20 g of NaOH is added to the solution?
A. 1.5 M
Correct B. 2.0 M
C. 2.5 M
D. 3.0 M

Correct Answer: B

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Question 21
The rate cons\tant for a first-order reaction is 0.05 min^-1. If the initial concentration of the reac\tant is 0.1 M, what is the concentration of the reac\tant after 10 minutes?
Correct A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.2 M

Correct Answer: A

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Question 22
A 2.5 g sample of a metal oxide is heated in a crucible until it is completely reduced to the metal. If the mass of the metal produced is 2.0 g, what is the percentage yield of the reaction?
A. 80%
B. 90%
Correct C. 95%
D. 98%

Correct Answer: C

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Question 23
A 25 mL sample of a solution containing 0.1 M NaOH is titrated with 0.1 M HCl. What is the pH of the solution after the titration?
A. 7
Correct B. 8
C. 9
D. 10

Correct Answer: B

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Question 24
A 5.0 g sample of a polymer is dissolved in 100 mL of solvent. What is the molar mass of the polymer?
A. 1000 g/mol
B. 2000 g/mol
Correct C. 3000 g/mol
D. 4000 g/mol

Correct Answer: C

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Question 25
A 10 mL sample of a solution containing 0.1 M glu\cose is titrated with 0.1 M NaOH. What is the pH of the solution after the titration?
A. 7
Correct B. 8
C. 9
D. 10

Correct Answer: B

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