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Chemistry WAEC / WASSCE 2025 Atomic Structure and Periodic Table
Five d-orbitals have the same energy level in an isolated transition metal are described as
A
degenerate
B
non-degenerate
C
high level orbital
D
low-level orbital
medium Difficulty
Chemistry WAEC / WASSCE 2025 Acids, Bases, and Salts
Which of the following oxides is amphoteric?
A
CaO
B
MgO
C
BaO
D
BeO
medium Difficulty
Chemistry WAEC / WASSCE 2025 Acids, Bases, and Salts
The allotrope of carbon used in the decolourization of sugar is
A
charcoal
B
graphite
C
lampblack
D
soot
medium Difficulty
Chemistry WAEC / WASSCE 2025 Atomic Structure and Periodic Table
In the periodic table, valence electrons are indicated by
A
group number
B
Shell number
C
period number
D
atomic mass
medium Difficulty
Chemistry WAEC / WASSCE 2025 Atomic Structure and Periodic Table
Nucleons are sub-atomic particles which consist of
A
protons and neutrons
B
neutrons and electrons
C
protons and electrons
D
neutrons, protons and electrons
medium Difficulty
Chemistry WAEC / WASSCE 2025 Matter & Separation Techniques
A few drops of sodium hydroxide is added to an aqueous solution, a green precipitate is formed. The ion that may be present in the solution is
A
Cu\(^{2+}\)
B
Fe\(^{2+}\)
C
Fe\(^{3+}\)
D
NH\(_4\)\(^{+}\)
medium Difficulty
Chemistry WAEC / WASSCE 2025 Atomic Structure and Periodic Table
When C\(_2\)H\(_4\) molecule is polymerized, the polymer formed is
A
polyethene
B
polyethane
C
polypropene
D
polybutene
medium Difficulty
Chemistry WAEC / WASSCE 2025 Matter & Separation Techniques
When a hypothesis is proven within the limit of available evidence, it becomes a
A
scope
B
theory
C
principle
D
law
medium Difficulty
Chemistry WAEC / WASSCE 2025 Stoichiometry & Mole Concept
Empirical formula is the
A
simplest formula of a compound
B
molecular formula of a compound
C
chemical formula of a compound
D
structural formula of a compound
medium Difficulty
Chemistry UTME / JAMB 2025 Matter & Separation Techniques
The 5\(^{th}\) member of an alkyne series is
A
C\(_5\)H\(_8\)
B
C\(_5\)H\(_{10}\)
C
C\(_6\)H\(_{12}\)
D
C\(_6\)H\(_{10}\)
medium Difficulty
Chemistry WAEC / WASSCE 2025 Matter & Separation Techniques
Empirical formula is the
A
simplest formula of a compound
B
molecular formula of a compound
C
chemical formula of a compound
D
structural formula of a compound
medium Difficulty
English Language UTME / JAMB 2025 English Grammar
What was the common ritual at the morning assembly at Stardom on Tuesdays and Thusdays?
A
Christian and Muslim Prayers.
B
Words of Exaltation.
C
The second stanza of the national anthem.
D
The principal’s address.
medium Difficulty
English Language UTME / JAMB 2025 English Grammar
Who among the staff at Stardom School is also a pastor?
A
Mr. Justus Anabel.
B
Mr. Ope Wande.
C
Mr. Audu.
D
Mr. Obong Ukake.
medium Difficulty
English Language UTME / JAMB 2025 English Grammar
What was given as a reward to teachers whose students scored distinctions in their subjects?
A
₦30,000 each.
B
₦20,000 each.
C
Bottles of wine only.
D
A special commendation letter.
medium Difficulty
English Language UTME / JAMB 2025 English Grammar
Why did the MD decide to send the principal home after the crying incident?
A
To protect the school’s reputation.
B
To avoid disturbing the students further.
C
To allow the principal to rest.
D
To prepare for a replacement.
medium Difficulty
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