POST UTME FUTO 2017 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A polymer has the following structure: [-CH₂-CH₂-]n. What is the type of polymerization reaction that occurred?
A. Addition polymerization
B. Condensation polymerization
C. Ring-opening polymerization
D. Step-growth polymerization
Question 2
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
C. 3
D. 4
Question 3
A 1.00 L solution of 0.500 M NaOH is prepared by dissolving 0.250 g of NaOH in 1.00 L of water. What is the concentration of OH^- ions in the solution?
A. 0.500 M
B. 1.00 M
C. 2.00 M
D. 5.00 M
Question 4
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
C. 1.8 cm³
D. 2.7 cm³
Question 5
A solution of HCl is titrated with NaOH. The initial pH of the solution is 2. The pH after the addition of 25 mL of NaOH is 4. What is the concentration of HCl?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 6
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
D. 80 g/mol
Question 7
Determine the type of reaction that occurs when 2,2-dimethylpropane reacts with chlorine gas.
A. Substitution reaction
B. Elimination reaction
C. Addition reaction
D. Substitution-elimination reaction
Question 8
A 0.500 M solution of HCl is titrated with 0.500 M NaOH. What is the pH of the solution after 25.0 mL of NaOH has been added?
A. 1.00
B. 2.00
C. 3.00
D. 4.00
Question 9
A sample of a non-metallic element has a mass of 2.50 g and a volume of 5.00 mL. What is the density of the element?
A. 0.500 g/mL
B. 1.00 g/mL
C. 2.00 g/mL
D. 5.00 g/mL
Question 10
A 2.5 M solution of HCl is prepared by dissolving 12.5 g of HCl in 2.0 L of water. What is the concentration of the solution in terms of molarity?
A. 1.0 M
B. 2.0 M
C. 2.5 M
D. 5.0 M
Question 11
The diagram below shows a titration setup. What is the purpose of the burette in this setup?
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
Question 12
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?
A. 12.5 mg
B. 25 mg
C. 50 mg
D. 100 mg
Question 13
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
C. 0.1 mol
D. 0.2 mol
Question 14
Determine the pH of a 0.01 M solution of HCl.
A. 1
B. 2
C. 3
D. 4
Question 15
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
B. 2
C. 3
D. 4

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