POST UTME FUTO 2017 Chemistry | Objective

Are you preparing for POST UTME FUTO exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Chemistry (Objective) questions designed to simulate the real exam environment.

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Question 1
Determine the s\tandard enthalpy of formation of CaCO3(s) from the following data: ΔHf(CaO(s)) = -635.09 kJ/mol, ΔHf(CO2(g)) = -393.51 kJ/mol.
Correct A. -1785.6 kJ/mol
B. -1785.1 kJ/mol
C. -1785.9 kJ/mol
D. -1786.1 kJ/mol

Correct Answer: A

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Question 2
A polymer has a molecular weight of 50,000 g/mol. If 2.5 g of the polymer is dissolved in 100 mL of water, what is the concentration of the solution in g/L?
Correct A. 0.25 g/L
B. 0.5 g/L
C. 1 g/L
D. 2 g/L

Correct Answer: A

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Question 3
A metal has a density of 8.5 g/cm^3. If a 2.5 cm^3 sample of the metal has a mass of 35 g, what is the molar mass of the metal?
A. 50 g/mol
B. 60 g/mol
C. 70 g/mol
Correct D. 80 g/mol

Correct Answer: D

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Question 4
A solution contains 2.5 g of NaCl in 100 mL of water. What is the concentration of the solution in g/L?
Correct A. 0.25 g/L
B. 0.5 g/L
C. 1 g/L
D. 2 g/L

Correct Answer: A

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Question 5
A metal has a density of 8.5 g/cm^3. If a 2.5 cm^3 sample of the metal has a mass of 35 g, what is the molar mass of the metal?
A. 50 g/mol
B. 60 g/mol
C. 70 g/mol
Correct D. 80 g/mol

Correct Answer: D

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Question 6
A solution of 0.1 M NaCl is prepared by dissolving 6.0 g of NaCl in 100 mL of water. Calculate the number of moles of NaCl that will dissolve in 1 L of water.
A. 0.01 mol
B. 0.05 mol
Correct C. 0.1 mol
D. 0.2 mol

Correct Answer: C

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Question 7
The half-life of a radioactive subs\tance is 5 days. If 100 mg of the subs\tance is present initially, how much will remain after 10 days?
Correct A. 12.5 mg
B. 25 mg
C. 50 mg
D. 100 mg

Correct Answer: A

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Question 8
A 0.1 M solution of HCl is prepared by dissolving 6.0 g of HCl in 100 mL of water. Calculate the pH of the solution.
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 9
A diagram of a titration setup is shown below. Identify the part labeled A.
Correct A. Burette
B. Beaker
C. Conical Flask
D. Test Tube

Correct Answer: A

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Question 10
A 0.1 M solution of NaOH is prepared by dissolving 4.0 g of NaOH in 100 mL of water. Calculate the number of moles of NaOH that will dissolve in 1 L of water.
A. 0.01 mol
B. 0.05 mol
Correct C. 0.1 mol
D. 0.2 mol

Correct Answer: C

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Question 11
Determine the pH of a 0.01 M solution of HCl.
A. 1
B. 2
C. 3
Correct D. 4

Correct Answer: D

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Question 12
A 25 mL sample of 0.1 M NaOH is titrated with 0.1 M HCl. What is the pH of the solution after the addition of 25 mL of HCl?
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 13
A solution contains 0.1 M HCl and 0.1 M NaOH. What is the pH of the solution?
A. 1
Correct B. 2
C. 3
D. 4

Correct Answer: B

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Question 14
A 25 mL sample of 0.1 M NaOH is titrated with 0.1 M HCl. What is the pH of the solution after the addition of 50 mL of HCl?
A. 1
B. 2
Correct C. 3
D. 4

Correct Answer: C

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Question 15
A solution contains 0.1 M HCl and 0.1 M NaOH. What is the pH of the solution after the addition of 25 mL of 0.1 M HCl?
A. 1
B. 2
C. 3
Correct D. 4

Correct Answer: D

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Question 16
The reaction between chlorine gas and sodium hydroxide solution is represented by the equation: Cl2 + 2NaOH → NaCl + NaClO + H2O. What is the oxidation state of chlorine in the product NaClO?
A. 0
B. +1
C. +2
Correct D. +3

Correct Answer: D

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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 H2O(l) if the s\tandard enthalpy of formation of CO(g) is -110.5 kJ/mol and that of H2(g) is 0 kJ/mol?
Correct A. -285.6 kJ/mol
B. -285.8 kJ/mol
C. -286.0 kJ/mol
D. -286.2 kJ/mol

Correct Answer: A

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Question 18
The half-life of a radioactive subs\tance is 5 days. If 100 g of the subs\tance is initially present, how much of it will remain after 15 days?
Correct A. 25 g
B. 50 g
C. 75 g
D. 100 g

Correct Answer: A

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Question 19
The diagram below shows a titration setup. What is the purpose of the burette in this setup?
Correct A. To measure the volume of the titrant
B. To measure the volume of the analyte
C. To mix the titrant and analyte
D. To separate the titrant and analyte

Correct Answer: A

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Question 20
The s\tandard enthalpy of formation of CO(g) is -110.5 kJ/mol. What is the s\tandard enthalpy of formation of H2O(g) if the s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol and that of H2(g) is 0 kJ/mol?
Correct A. -285.6 kJ/mol
B. -285.8 kJ/mol
C. -286.0 kJ/mol
D. -286.2 kJ/mol

Correct Answer: A

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Question 21
The element with atomic number 12 is classified as a metalloid. Which of the following is a characteristic of metalloids?
Correct A. They exhibit metallic as well as non-metallic properties.
B. They are highly reactive.
C. They are good conductors of electricity.
D. They are highly malleable.

Correct Answer: A

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Question 22
A 2.5 g sample of a non-metallic element was found to have a density of 5.6 g/cm³. What is the volume of the sample in cm³?
A. 0.45 cm³
B. 0.9 cm³
Correct C. 1.8 cm³
D. 2.7 cm³

Correct Answer: C

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Question 23
A solution of NaOH was prepared by dissolving 25 g of NaOH in 100 g of water. What is the molarity of the solution?
A. 0.5 M
Correct B. 1.0 M
C. 1.5 M
D. 2.0 M

Correct Answer: B

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Question 24
A polymer has the following structure: [-CH₂-CH₂-]n. What is the type of polymerization reaction that occurred?
Correct A. Addition polymerization
B. Condensation polymerization
C. Ring-opening polymerization
D. Step-growth polymerization

Correct Answer: A

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Question 25
A 10 mL sample of a solution containing 0.5 M NaCl was titrated with 0.5 M AgNO₃. What is the volume of AgNO₃ required to reach the equivalence point?
A. 5 mL
Correct B. 10 mL
C. 15 mL
D. 20 mL

Correct Answer: B

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