Jamb Chemistry 2023 Past Questions and Answers

Question 21:

• JAMB 2023

What is the mass (in grams) of 500 mL of ethanol? (density of ethanol = 0.789 g/mL)

A. 394.5 mL
B. 500 mL
C. 394.5 g
D. 500 g

Question 22:

• JAMB 2023

The heat of reaction can be determined experimentally using a device called a

A. Calorimeter
B. Barometer
C. Spectrometer
D. Thermometer

Question 23:

• JAMB 2023

Which halogen is a gas at room temperature and is pale yellow in color?

A. Chlorine (Cl)
B. Fluorine (F)
C. Iodine (I)
D. Bromine (Br)

Question 24:

• JAMB 2023

What unit of temperature should be used when applying the ideal gas law?

A. Fahrenheit (°F)
B. Kelvin (K)
C. Rankine (°R)
D. Celsius (°C)

Question 25:

• JAMB 2023

Chlorine gas is commonly used in the production of which of the following industrial compounds?

A. Chlorofluorocarbons (CFCs)
B. Methane
C. Ammonia
D. Ethanol