2024
127g of sodium chloride was dissolved in 1.0dm\(^3\) of distilled water at 25\(^0\)C . Determine the solubility in moldm\(^{-3}\) of sodium chloride at that temperature. [Na = 23, Cl = 35.5]
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2024 JAMB UTME Chemistry Past Questions
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2024
If the solubility of KNO\(_3\) at 30\(^0\)C is 3.10 mol/dm\(^3\) a solution containing 303g/dm\(^3\) KNO\(_3\) is likely to be
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2024
When a few drops of Millon reagents is added to egg-white solution in a test tube, the white precipitate changes to
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2024
How many isomers has the organic compound represented by the formula C\(_3\)H\(_8\)O ?
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2024
The number of geometrical isomers of butene are
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2024
A gas when mixed with oxygen, it produces a very hot and early controllable flame. What is the name of the flame and where is it used?
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2024
Biuret test is a chemical test used for detecting the presence of
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2024
The empirical formula of an organic liquid hydrocarbon is XY. If the relative molar masses of X and Y are 72 and 6 respectively, it's vapour density is likely to be
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2024
An organic compound contains 53.1% Carbon, 6.2% Hydrogen, 12.4% Nitrogen, and 28.3% Oxygen by mass. What is the molecular formula of the compound if its vapour density is 56.5? [ C =12, H = 1, N = 14, O = 16].
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2024
A liquid hydrocarbon obtained from fractional distillation of coal tar that is used in the pharmaceutical industry is
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2024
During the fractional distillation of crude oil, the fraction that distills at 200 - 250\(^0\) C is
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2024
The constituent of petroleum fraction used in surfacing road is
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2024
When Calcium ethynide is decomposed by water, the gas produced is
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2024
In the extraction of Aluminium, the silica impurity is removed by
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2024
Silver and Gold are metals found as free uncombined elements in the earth's crust, which makes them to be referred to as
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2024
The constituents of Alnico are Aluminium, Nickel and
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2024
The number of molecules of helium gas contained in 11.5g of the gas is
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2024
At a given temperature and pressure, a gas X diffuses twice as fast as gas Y. It follows that
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