POST UTME FUTO 2021 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
What is the major product of the reaction between 2-methylpropene and HCl?
A. 2-chloro-2-methylpropane
B. 2-chloro-2-methylpropane
C. 2-chloro-2-methylpropane
D. 2-chloro-2-methylpropane
Question 2
The solubility of a subs\tance in water is influenced by the following factors, EXCEPT:
A. Temperature
B. Pressure
C. pH
D. Concentration
Question 3
A 1.00 M solution of NaOH is prepared by dissolving 40.0 g of NaOH in enough water to make 1.00 L of solution. What is the molarity of the solution?
A. 0.100 M
B. 0.200 M
C. 0.300 M
D. 0.400 M
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. -285.8 kJ/mol
B. -241.8 kJ/mol
C. -393.5 kJ/mol
D. -110.5 kJ/mol
Question 5
A 0.500 M solution of NaOH is prepared by dissolving 25.0 g of NaOH in 1000 mL of water. What is the concentration of NaOH in the solution in units of mol/L?
A. 0.250 M
B. 0.500 M
C. 1.00 M
D. 1.50 M
Question 6
Determine the oxidation state of the underlined element in the compound [Cu\( NH_3 \)_4\( H_2O \)_2]SO_4.
A. +2
B. +1
C. -2
D. 0
Question 7
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. -393.5 kJ/mol
C. -74.8 kJ/mol
D. -283.5 kJ/mol
Question 8
A solution contains 10 g of NaCl in 100 mL of water. If the density of the solution is 1.2 g/mL, calculate the molarity of the solution.
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 9
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 10
A 25.0 mL sample of 0.100 M HCl is mixed with a 25.0 mL sample of 0.100 M NaOH. What is the pH of the resulting solution?
A. 1.00
B. 2.00
C. 3.00
D. 4.00
Question 11
In a titration experiment, 25.0 mL of 0.100 M HCl was added to 20.0 mL of 0.0500 M NaOH. If the reaction is complete, what is the pH of the resulting solution?
A. ( 2.00 )
B. ( 3.00 )
C. ( 4.00 )
D. ( 5.00 )
Question 12
A 2.50 g sample of a metal hydroxide is heated to produce a metal oxide and water vapor. The mass of the metal oxide produced is 2.00 g. What is the molar mass of the metal hydroxide?
A. 60.00 g/mol
B. 62.00 g/mol
C. 64.00 g/mol
D. 66.00 g/mol
Question 13
A sample of gas occupies a volume of 2.50 L at a pressure of 1.00 atm and a temperature of 298 K. If the pressure is increased to 2.00 atm while the temperature remains cons\tant, what is the new volume of the gas?
A. ( 1.25 ) L
B. ( 2.50 ) L
C. ( 3.75 ) L
D. ( 5.00 ) L
Question 14
A 1.0 L flask contains 0.5 mol of an ideal gas at 298 K. What is the pressure of the gas?
A. 1.01 atm
B. 1.01 atm
C. 1.01 atm
D. 1.01 atm
Question 15
A 2.50 g sample of an unknown hydrocarbon is burned in a combustion calorimeter. The temperature of the calorimeter increases by 12.5°C. If the heat capacity of the calorimeter is 250 J/°C, what is the heat of combustion of the hydrocarbon?
A. -100 kJ/mol
B. -200 kJ/mol
C. -300 kJ/mol
D. -400 kJ/mol

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