1981
In the preparation of ammonia, which of the following is used as the drying agent?
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1981 JAMB UTME Chemistry Past Questions
1981
In the reaction of oxygen with hydrogen to produce water, which of the following statements is true?
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1981
If an organic compound decolorizes bromine water then the compound is?
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1981
When sodium nitrate dissolves in water, ∆H is positive. This means that?
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1981
Na2CO3 + 2HCI → 2NaCI + H2O + CO2. Using the above equation, what volume of carbondioxide, measured at s.t.p is liberated when 53g of sodium carbonate is dissolved in hydrochloric acid?(1 mole of gas occupies 22.4 dm3 at…
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1981
If 48,000 coulombs of electricity are required to discharge 0.5 mole of sodium from a molten sodium chloride mass, then the number of coulombs required to discharge 2 moles of lead from molten lead (ll) chloride is?
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1981
28.8 cm3 of nitrogen at 15°C is cooled to O°C at constant pressure, the new volume of nitrogen is?
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1981
Which of the following statements about phosphorus is NOT correct?
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1981
Fats and oils are?
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1981
When air is compressed?
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1981
5cm3 of a saturated solution of sodium chloride at 30°C gave, on careful evaporation, 1.95g of solid salt. The solubility of sodium chloride at 30°C?(Na = 23, Cl = 35.5)
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1981
The electronic configuration of elements X and Y are X = 2, 8, 6; Y = 2, 8, 7. The bond in the compound formed by X and Y is expected to be?
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1981
Which of the following is NOT a true statement of the kinetic Theory of Gases?
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1981
The products of the reaction between dilute sulphuric acid and sodium thiosulphate crystals are?
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1981
The following compounds are given with their corresponding boiling points.Compound Boiling Point i.................................14°C ii................................24°C iii................................0°C iv…
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1981
When hydrogen sulphide and sulphur dioxide are each passed in turn into a solution of potassium dichromate?
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1981
Which of the following compounds and elements would sublime on exposure to the atmosphere?
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1981
What mass of sodium carbonate solution is in 500 cm3 of 0.1 molar sodium carbonate solution?(Na = 23, C = 12, O = 16)
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1981
Pure sulphuric acid is a liquid of 1:84 density. What volume of it would be required to prepare 250 cm3 of 2.0 M solution?(H = 1, S = 32, O = 16)
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1981
In the extraction of iron, which of the following reactions does NOT take place in the blast furnace?
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