Paper 1 | Objectives | 46 Questions
WASSCE/WAEC MAY/JUNE
Year: 2011
Level: SHS
Time:
Type: Question Paper
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# | Question | Ans |
---|---|---|
1. |
How many isotopes has hydrogen? A. 2 B. 3 C. 4 D. 5 |
B |
2. |
Which of the following electrons configurations correctly represents an inert element? A. 1s22s22p4 B. 1s22s22p63s2 C. 1s22s22p63s23p4 D. 1s22s22p6 |
D |
3. |
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 |
B |
4. |
Which of the following ions has the electron configuration 2,8,8? A. Na+ B. Mg2+ C. F- D. CI- |
D |
5. |
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 |
A |
6. |
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 |
D |
7. |
Which of the following elements would produce coloured ions in aqueous solution? A. Calcium B. lron C. Magnesium D. Sodium |
B |
8. |
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 |
C |
9. |
Which of the following hydrohalic acids is the weakest? A. HBr B. HCI C. HF D. HI |
D |
10. |
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 |
A |
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