Paper 1 | Objectives | 49 Questions
JAMB Exam
Year: 2005
Level: SHS
Time:
Type: Question Paper
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# | Question | Ans |
---|---|---|
1. |
Which of the following equimolar solutions will have the highest pH? A. CH3COOHa B. NaOH C. HCl D. NH4OH |
B |
2. |
Which of the following ions require the largest quantity of electricity for discharge at an electrode? A. 4.0 moles of Cl- B. 3.0 moles of Na+ C. 2.5 moles of Cu2+ D. 2.0 moles of Al3+ |
D |
3. |
Phenolphthalein in acidic solution is A. red B. orange C. colourless D. yellow |
C |
4. |
When iron is exposed to moisture and it rusts, the value of ΔG for the reaction is A. neutral B. zero C. positive D. negative |
D |
5. |
In which of the following reactions can the oxidation number of the nitrogen be said to have increased? A. 2NO(g) + O2(g) → 2NO2(g) B. NO(g) + Cl2(g) → NOCl2(l) C. FeSO4(aq) + NO(g) → Fe(NO)SO4(s) D. NO(g) + Br2(l) → NOBr2(l)
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Detailed SolutionThe oxidation number of the nitrogen of N in NO = 2The oxidation number of the nitrogen of N in NOCl\(_2\) = 4 OPTION B is the correct option |
|
6. |
2H2 + O22 → H2+O ΔH = -571kJ A. -1142 kJ B. -571 kJ C. +1142 kJ D. -1713 kJ
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Detailed Solution2H2 + O22 → H2+O ΔH = -571kJ4.0g of Hydrogen burn in air to produce -571 kJ ∴ 12.0s of Hydrogen will burn in air to produce (12 * -571)/4 = -1713kJ |
|
7. |
A concentrated solution containing H+, Cu2+, OH- and Cl- was electrolyzed using platinum electrodes. A. Cu2+ B. Cl- C. H+ D. OH- |
A |
8. |
When sulphur (IV) oxide is passed into a solution of sodium hydroxide for a long time, it eventually produces a solution of A. NaHSO4 B. Na2SO3 C. NaHSO3 D. Na2SO4 |
B |
9. |
What is the correct IUPAC name for NO\(_{2} ^{-}\)? A. Dioxonitrate (IV) ion B. Trioxonitrate (III) ion C. Trioxonitrate (IV) ion D. Dioxonitrate (III) ion |
D |
10. |
What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)? A. The spoon will be oxidized while the iron (II) ions will be reduced to the metal B. The spoon will increase in size C. The spoon will be reduced while the iron (II) ions will be oxidized D. The spoon will be reduced |
A |
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