POST UTME FUTA 2021 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
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
B. 8
C. 9
D. 10
Question 2
A metal oxide has the formula M2O3. If 2.5 g of the oxide is dissolved in 50 mL of 0.1 M HCl, what is the concentration of the metal ion in the solution?
A. 0.1 M
B. 0.05 M
C. 0.01 M
D. 0.005 M
Question 3
The element with atomic number 16 is in group 16 of the periodic table. What is the name of this element?
A. Sulfur
B. Phosphorus
C. Chlorine
D. Argon
Question 4
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)?
A. 0 kJ/mol
B. 0 kJ/mol
C. 0 kJ/mol
D. 0 kJ/mol
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?
A. Haber-Bosch process
B. Contact process
C. Fischer-Tropsch process
D. Ostwald process
Question 6
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
C. +7
D. +8
Question 7
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?
A. 0.01 M
B. 0.05 M
C. 0.1 M
D. 0.2 M
Question 8
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
B. mol/L
C. g/mol
D. mol/g
Question 9
A polymer has a molecular weight of 100,000 g/mol and a degree of polymerization of 500. What is the molar mass of the repeating unit?
A. 200 g/mol
B. 400 g/mol
C. 500 g/mol
D. 600 g/mol
Question 10
The rate cons\tant for a second-order reaction is 0.0500 L/mol·min. If the initial concentration of the reac\tant is 0.100 M, what is the concentration after 10.0 min?
A. 0.0500 M
B. 0.0750 M
C. 0.100 M
D. 0.125 M
Question 11
A 25.0 mL sample of 0.150 M sodium hydroxide is titrated with 0.100 M hydrochloric acid. What is the pH of the solution after the addition of 25.0 mL of the hydrochloric acid solution?
A. 1.00
B. 2.00
C. 3.00
D. 4.00
Question 12
A 5.0 g sample of a metal is heated in a crucible until it is completely oxidized. If the mass of the oxide produced is 7.0 g, what is the percentage yield of the reaction?
A. 80%
B. 90%
C. 95%
D. 98%
Question 13
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
B. mol/L
C. g/mol
D. L/mol
Question 14
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)?
A. -110.5 kJ/mol
B. -110.5 kJ/mol
C. -110.5 kJ/mol
D. -110.5 kJ/mol
Question 15
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
B. 0.750
C. 0.875
D. 1.000

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