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Paper 1 | Objectives | 46 Questions
WASSCE/WAEC MAY/JUNE
Year: 2011
Level: SHS
Time:
Type: Question Paper
Source: Nigeria
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Paper 1 | Objectives
Chemistry
Exam
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How many isotopes has hydrogen?
A. 2
B. 3
C. 4
D. 5
Which of the following electrons configurations correctly represents an inert element?
A. 1s22s22p4
B. 1s22s22p63s2
C. 1s22s22p63s23p4
D. 1s22s22p6
What type of reaction is represented by the following equation?\(\frac{2}{1}\)D\(\frac{3}{1}\)H → \(\frac{4}{4}\)He + \(\frac{1}{0}\)n + energy
A. Nuclear fission
B. Nuclar fusion
C. Radioactive decay
D. Spontaneous decay
Which of the following ions has the electron configuration 2,8,8?
A. Na+
B. Mg2+
C. F-
D. CI-
An element with the electron configuration of 1s 22s 22p 6 would have a combining power of
A. o
B. 2
C. 6
D. 8
Rare gases are stable because they
A. contain equal number of protons and neutrons
B. contain more electrons than protons
C. are chemically active
D. have octet structure
Which of the following elements would produce coloured ions in aqueous solution?
A. Calcium
B. lron
C. Magnesium
D. Sodium
The energy change that accompanies the addition of an electron to an isolated gaseous atom is
A. bond energy
B. electronegativity
C. electron affinity
D. ionization energy
Which of the following hydrohalic acids is the weakest?
A. HBr
B. HCI
C. HF
D. HI
Which of the following arrangements is in order of increasing metallic property?
A. Li < Na< k
B. Na < Li < K
C. K
D. K < Li < Na
Preview displays only 10 out of the 46 Questions