Question Library

Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.

Launch Interactive Practice
Searching 18,000+ Questions... Sifting topics, KaTeX formulas & verified solutions
Showing 1711–1725 of 14893 verified questions
Sort by:
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
At 2.0 atm pressure, the volume of a gas is 4.0 L. If the pressure is reduced to 1.0 atm while keeping the temperature constant, what will be the new volume of the gas?
A
2.0 L
B
6.0 L
C
8.0 L
D
4.0 L
medium Difficulty
Chemistry UTME / JAMB 2023 Acids, Bases, and Salts
What is the main environmental concern associated with sulfur dioxide emissions?
A
Formation of acid rain
B
Global warming potential
C
Depletion of the stratospheric ozone
D
Depletion of the ozone layer
medium Difficulty
Chemistry UTME / JAMB 2023 Acids, Bases, and Salts
Benzene can be converted to its derivative toluene by the addition of a methyl group. The reaction is an example of
A
Nucleophilic substitution
B
Elimination reaction
C
Electrophilic substitution
D
Addition reaction
medium Difficulty
Chemistry UTME / JAMB 2023 Atomic Structure and Periodic Table
Why is water often referred to as the "universal solvent"?
A
Water is the most abundant substance on Earth
B
Water is essential for all living organisms.
C
Water is involved in many chemical reactions
D
Water can dissolve a wide variety of substances due to its polar nature
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
Which of the following mixtures is an example of a colloid?
A
Milk
B
Orange juice
C
Saltwater
D
Sugar dissolved in water
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
Which of the following substances is NOT hygroscopic?
A
Salt
B
Sugar
C
Silica gel
D
Aluminum
medium Difficulty
Chemistry UTME / JAMB 2023 Stoichiometry & Mole Concept
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
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
The heat of reaction can be determined experimentally using a device called a
A
Calorimeter
B
Barometer
C
Spectrometer
D
Thermometer
medium Difficulty
Chemistry UTME / JAMB 2023 Atomic Structure and Periodic Table
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)
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
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)
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
Chlorine gas is commonly used in the production of which of the following industrial compounds?
A
Chlorofluorocarbons (CFCs)
B
Methane
C
Ammonia
D
Ethanol
medium Difficulty
Chemistry UTME / JAMB 2023 Acids, Bases, and Salts
The process of rusting is an example of the formation of
A
Basic oxide
B
Acidic oxide
C
Reducing oxide
D
Amphoteric oxide
medium Difficulty
Chemistry UTME / JAMB 2023 Matter & Separation Techniques
Which of the following is an example of a primary cell?
A
Alkaline battery
B
Nickel-cadmium battery
C
Lead-acid battery
D
Lithium-ion battery
medium Difficulty
Chemistry UTME / JAMB 2023 Atomic Structure and Periodic Table
Which of the following is a characteristic property of acids?
A
Turn litmus paper blue
B
Bitter taste
C
pH value above 7
D
React with metals to produce hydrogen gas
medium Difficulty
Chemistry UTME / JAMB 2023 Atomic Structure and Periodic Table
The lanthanides and actinides are located in which block of the periodic table?
A
P-block
B
S-block
C
F-block
D
D-block
medium Difficulty
Page 115 of 993