POST UTME FUTO 2023 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 50.0-mL sample of 0.200 M H2SO4 is titrated with 0.100 M NaOH. Calculate the number of moles of NaOH required to reach the equivalence point.
A. 0.0100 mol
B. 0.0200 mol
C. 0.0300 mol
D. 0.0400 mol
Question 2
The half-life of a radioactive subs\tance is 5 years. If the initial amount of the subs\tance is 100 g, what is the amount remaining after 10 years?
A. 12.5 g
B. 25 g
C. 50 g
D. 100 g
Question 3
Determine the number of moles of oxygen gas (O2) produced at STP when 2.50 g of potassium chlorate (KClO3) decomposes according to the equation: 2KClO3(s) → 2KCl(s) + 3O2(g).
A. 0.0500 mol
B. 0.100 mol
C. 0.150 mol
D. 0.200 mol
Question 4
The s\tandard enthalpy of formation of CO2 is -393.5 kJ/mol. What is the s\tandard enthalpy of formation of CO?
A. -110.5 kJ/mol
B. -393.5 kJ/mol
C. 110.5 kJ/mol
D. 393.5 kJ/mol
Question 5
A 0.1 M solution of NaOH is titrated with 0.1 M HCl. What is the concentration of the solution after 25 mL of HCl has been added?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 6
A solution of sodium chloride (NaCl) is prepared by dissolving 35.5 g of NaCl in 100 mL of water. What is the molar concentration of the solution?
A. 0.6 M
B. 0.8 M
C. 1.0 M
D. 1.2 M
Question 7
A 25.0-mL sample of 0.150 M NaOH is titrated with 0.100 M HCl. Calculate the number of moles of HCl required to reach the equivalence point.
A. 0.00500 mol
B. 0.0100 mol
C. 0.0150 mol
D. 0.0200 mol
Question 8
A diagram of a titration setup is shown below. If the burette contains 25.0 mL of 0.100 M HCl, and the initial pH of the solution is 7.00, what is the pH of the solution after 15.0 mL of 0.100 M NaOH has been added?
A. 7.00
B. 7.50
C. 8.00
D. 9.00
Question 9
In a reaction between zinc metal and copper(II) sulfate solution, what is the oxidation state of copper in the product?
A. +2
B. -2
C. +1
D. -1
Question 10
A solution contains 0.05 M FeCl3 and 0.1 M NaOH. What is the concentration of Fe(OH)3 formed after mixing?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 11
A diagram shows a titration setup with a burette containing 0.1 M HCl and a flask containing 20 mL of 0.2 M NaOH. What is the volume of HCl required to reach the equivalence point?
A. 10 mL
B. 20 mL
C. 30 mL
D. 40 mL
Question 12
A mixture of 2.5 g of glu\cose (C6H12O6) and 1.5 g of fructose (C6H12O6) is dissolved in 50 mL of water. What is the osmotic pressure of the solution at 25°C?
A. 2.5 atm
B. 3.0 atm
C. 3.5 atm
D. 4.0 atm
Question 13
A 0.1 M solution of acetic acid (CH3COOH) is titrated with a 0.1 M solution of sodium hydroxide (NaOH). What is the pH of the solution after the addition of 20 mL of NaOH?
A. 2
B. 3
C. 4
D. 5
Question 14
The reaction of cyclohexane with bromine in the presence of light produces a mixture of cyclohexyl bromide and 1,2-dibromocyclohexane. What is the major product of this reaction?
A. cyclohexyl bromide
B. 1,2-dibromocyclohexane
C. cyclohexane
D. benzene
Question 15
Determine the pH of a 0.1 M solution of HCl at 25°C, given that the dissociation cons\tant of HCl is 10^\( -7 \) and the ion product of water is 10^\( -14 \).
A. 1
B. 2
C. 3
D. 4

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