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Paper 1 | Objectives | 42 Questions
WASSCE/WAEC MAY/JUNE
Year: 1999
Level: SHS
Time:
Type: Question Paper
Source: Nigeria
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Paper 1 | Objectives
Chemistry
Exam
1985
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1988
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Government
2000
Mathematics (Core)
2020
Agricultural Science
2018
1983
Biology
2016
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2017
Which of the following atoms contains the highest number of electrons in the outermost shell?
A. 8O
B. 10Ne
C. 15P
D. 19K
What is the electronic configuration of an element represented as 199X?
A. 1s 22s2 2p 5
B. 1s22s23s23p3
C. 1s2 2s2 2p 33s2
D. 1s 22s22p 63s23p64s 1
Pauli Exclusion Principle is related to
A. quantum numbers of electrons
B. reversiblility of equlibrium reactions
C. electronegativity values of elements
D. collision theory of reaction rates
Which of the orbitals 4s, 4p, 4d and 4f has the lowest energy?
A. 4f
B. 4p
C. 4d
D. 4s
Two radioactive elements Q and S have half-life periods of 10 hours and 20 hours respectively. Therefore
A. S decays faster than Q
B. Q is twice as stable as S
C. Q emits fewer particles than S
D. S is more stable than Q
Calcium atom ionizes by
A. gaining two electrons
B. losing two electrons
C. sharing two electrons
D. gaining two protons
Which of the following properties increases down a group in the Periodic Table?
A. Atomic radius
B. Electronegativity
C. Electon affinity
D. Ionization energy
In the Periodic Table, the elements that loss electrons most readily belong to
A. Group 1 A
B. Group 11 A
C. Group 111 A
D. Group V11 A
Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag
Preview displays only 9 out of the 42 Questions