2018
In the upper atmosphere, the ultra-violet light breaks off a free chlorine atom from chlorofluorocarbon molecule. The effect of this is that the free chlorine atom will
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2018 JAMB UTME Chemistry Past Questions
2018
Which of the following separation techniques can be employed in obtaining solvent from its solution?
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2018
A sample of hard water contains some calcium sulphate and calcium hydrogen carbonate. The total hardness may therefore be removed by
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2018
When large hydrocarbon molecules are heated at high temperature in the presence of a catalyst to give smaller molecules, the process is known as
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2018
Which of the compounds is composed of Al, Si, O and H?
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2018
H\(_2\) S\(_{(g)}\) + Cl\(_{2(g)}\) → 2HCl\(_{(g)}\) + S\(_{(g)}\) In the reaction above, the substance that is reduced is
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2018
The elements in the periodic table are listed in order of increasing
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2018
The alkanoic acid found in human sweat is
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2018
The general formula of alkanones is
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2018
The situation obtained when a perfect gas expands into a vacuum is
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2018
3H\(_{2(g)}\)+ N2 ⇔ 2NH\(_{3(g)}\) ; H= -veIn the reaction above, lowering of temperature will
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2018
Sieving is a technique used to separate mixtures containing solid particles of
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2018
If the molecular mass of tetraoxosulphate (VI) acid is 98, calculate its vapour density.
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2018
Which of these alloys contains copper?
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2018
Calculate the percentage composition of oxygen in calcium trioxocarbonate(IV) [Ca=40, C=12, O=16]
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2018
The ionic radii of metals are usually
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2018
In electrovalency, the oxidation number of the participating metal is always
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2018
The derivative of benzene that can be used in making explosives is
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2018
During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment
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2018
Elements P, Q, R, S have 6, 11, 15, 17 electrons respectively, therefore,
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